HomeConsumer Goods and ServicesHousehold Goods, Furniture & Decor Outdoor Sound Barriers Market

Global Outdoor Sound Barriers Market Size, Share & Demand Report By Product Type (Concrete Barriers, Metal Barriers, Wood Barriers, Composite/Polymer Barriers, Transparent/Acrylic Barriers), By Application (Highways, Railways, Airports, Residential Zones, Industrial Facilities), By Installation Type, By Region & Segment Forecasts, 2026–2031

Report Code: DMI1818PUB | Last Updated : 18 June, 2026 | Base Year : 2025 | Historical Data : 2022-2024 | Region : Global | Format : PDF, Excel | Number of Pages : 140 | Author : Harper Lewis

Table of Contents

  1. Executive Summary
    1. Introduction
  2. Market Introduction
    1. Market Definition
    2. Scope of the Study
    3. Market Structure
  3. Research Methodology
    1. Primary Research
    2. Research Methodology
    3. Assumptions & Exclusions
    4. Secondary Data Sources
  4. Market Factor Analysis
    1. Value Chain Analysis: Outdoor Sound Barriers Market
    2. Porters Five Forces Analysis
      1. Bargaining Power of Suppliers
      2. Bargaining Power of Buyers
      3. Threat of Substitution
      4. Threat of New Entrants
      5. Competitive Rivalry
  5. Market Dynamics
    1. Drivers
    2. Restraints
    3. Opportunities
  6. Recent Trends Analysis
  7. Impact of COVID-19 on Outdoor Sound Barriers Market
    1. Pre and Post Covid -19 Market Scenario Analysis
    2. Market Recovery Timeline and Challenge
    3. Measures Taken by Top Players
  8. Regulatory Landscape
  9. Outdoor Sound Barriers Market, By Product Type
    1. Introduction
      1. Market Size and Forecast, By Product Type
    2. Concrete Sound Barriers
      1. Market Size and Forecast, By Region
    3. Metal Sound Barriers
      1. Market Size and Forecast, By Region
    4. Wood Sound Barriers
      1. Market Size and Forecast, By Region
    5. Composite & Polymer-Based Barriers
      1. Market Size and Forecast, By Region
    6. Transparent/Acrylic Noise Barriers
      1. Market Size and Forecast, By Region
  10. Outdoor Sound Barriers Market, By Application
    1. Introduction
      1. Market Size and Forecast, By Application
    2. Highways & Roadways
      1. Market Size and Forecast, By Region
    3. Railways & Public Transit Corridors
      1. Market Size and Forecast, By Region
    4. Airports
      1. Market Size and Forecast, By Region
    5. Residential & Urban Areas
      1. Market Size and Forecast, By Region
    6. Industrial & Utility Facilities
      1. Market Size and Forecast, By Region
  11. Outdoor Sound Barriers Market, By Installation Type
    1. Introduction
      1. Market Size and Forecast, By Installation Type
    2. Prefabricated/Modular Installations
      1. Market Size and Forecast, By Region
    3. Custom-Built Sound Barriers
      1. Market Size and Forecast, By Region
  12. Outdoor Sound Barriers Market, By Material Type
    1. Introduction
      1. Market Size and Forecast, By Material Type
    2. Concrete
      1. Market Size and Forecast, By Region
    3. Steel/Metal
      1. Market Size and Forecast, By Region
    4. High-Performance Polymers
      1. Market Size and Forecast, By Region
    5. Timber/Wood
      1. Market Size and Forecast, By Region
    6. Glass & Acrylic Systems
      1. Market Size and Forecast, By Region
  13. Outdoor Sound Barriers Market, By End-User
    1. Introduction
      1. Market Size and Forecast, By End-User
    2. Government & Municipal Agencies
      1. Market Size and Forecast, By Region
    3. Infrastructure Developers
      1. Market Size and Forecast, By Region
    4. Industrial Operators
      1. Market Size and Forecast, By Region
    5. Real Estate & Urban Planners
      1. Market Size and Forecast, By Region
  14. Regional Overview
    1. Introduction
      1. Market Size and Forecast
    2. North America
      1. Market Size and Forecast
        1. By Product Type
          1. Concrete Sound Barriers
            1. Metal Sound Barriers
              1. Wood Sound Barriers
                1. Composite & Polymer-Based Barriers
                  1. Transparent/Acrylic Noise Barriers
                  2. By Application
                    1. Highways & Roadways
                      1. Railways & Public Transit Corridors
                        1. Airports
                          1. Residential & Urban Areas
                            1. Industrial & Utility Facilities
                            2. By Installation Type
                              1. Prefabricated/Modular Installations
                                1. Custom-Built Sound Barriers
                                2. By Material Type
                                  1. Concrete
                                    1. Steel/Metal
                                      1. High-Performance Polymers
                                        1. Timber/Wood
                                          1. Glass & Acrylic Systems
                                          2. By End-User
                                            1. Government & Municipal Agencies
                                              1. Infrastructure Developers
                                                1. Industrial Operators
                                                  1. Real Estate & Urban Planners
                                                2. U.S.
                                                  1. By Product Type
                                                    1. Concrete Sound Barriers
                                                      1. Metal Sound Barriers
                                                        1. Wood Sound Barriers
                                                          1. Composite & Polymer-Based Barriers
                                                            1. Transparent/Acrylic Noise Barriers
                                                            2. By Application
                                                              1. Highways & Roadways
                                                                1. Railways & Public Transit Corridors
                                                                  1. Airports
                                                                    1. Residential & Urban Areas
                                                                      1. Industrial & Utility Facilities
                                                                      2. By Installation Type
                                                                        1. Prefabricated/Modular Installations
                                                                          1. Custom-Built Sound Barriers
                                                                          2. By Material Type
                                                                            1. Concrete
                                                                              1. Steel/Metal
                                                                                1. High-Performance Polymers
                                                                                  1. Timber/Wood
                                                                                    1. Glass & Acrylic Systems
                                                                                    2. By End-User
                                                                                      1. Government & Municipal Agencies
                                                                                        1. Infrastructure Developers
                                                                                          1. Industrial Operators
                                                                                            1. Real Estate & Urban Planners
                                                                                          2. Canada
                                                                                        2. Europe
                                                                                          1. Market Size and Forecast
                                                                                            1. By Product Type
                                                                                              1. Concrete Sound Barriers
                                                                                                1. Metal Sound Barriers
                                                                                                  1. Wood Sound Barriers
                                                                                                    1. Composite & Polymer-Based Barriers
                                                                                                      1. Transparent/Acrylic Noise Barriers
                                                                                                      2. By Application
                                                                                                        1. Highways & Roadways
                                                                                                          1. Railways & Public Transit Corridors
                                                                                                            1. Airports
                                                                                                              1. Residential & Urban Areas
                                                                                                                1. Industrial & Utility Facilities
                                                                                                                2. By Installation Type
                                                                                                                  1. Prefabricated/Modular Installations
                                                                                                                    1. Custom-Built Sound Barriers
                                                                                                                    2. By Material Type
                                                                                                                      1. Concrete
                                                                                                                        1. Steel/Metal
                                                                                                                          1. High-Performance Polymers
                                                                                                                            1. Timber/Wood
                                                                                                                              1. Glass & Acrylic Systems
                                                                                                                              2. By End-User
                                                                                                                                1. Government & Municipal Agencies
                                                                                                                                  1. Infrastructure Developers
                                                                                                                                    1. Industrial Operators
                                                                                                                                      1. Real Estate & Urban Planners
                                                                                                                                    2. U.K.
                                                                                                                                      1. By Product Type
                                                                                                                                        1. Concrete Sound Barriers
                                                                                                                                          1. Metal Sound Barriers
                                                                                                                                            1. Wood Sound Barriers
                                                                                                                                              1. Composite & Polymer-Based Barriers
                                                                                                                                                1. Transparent/Acrylic Noise Barriers
                                                                                                                                                2. By Application
                                                                                                                                                  1. Highways & Roadways
                                                                                                                                                    1. Railways & Public Transit Corridors
                                                                                                                                                      1. Airports
                                                                                                                                                        1. Residential & Urban Areas
                                                                                                                                                          1. Industrial & Utility Facilities
                                                                                                                                                          2. By Installation Type
                                                                                                                                                            1. Prefabricated/Modular Installations
                                                                                                                                                              1. Custom-Built Sound Barriers
                                                                                                                                                              2. By Material Type
                                                                                                                                                                1. Concrete
                                                                                                                                                                  1. Steel/Metal
                                                                                                                                                                    1. High-Performance Polymers
                                                                                                                                                                      1. Timber/Wood
                                                                                                                                                                        1. Glass & Acrylic Systems
                                                                                                                                                                        2. By End-User
                                                                                                                                                                          1. Government & Municipal Agencies
                                                                                                                                                                            1. Infrastructure Developers
                                                                                                                                                                              1. Industrial Operators
                                                                                                                                                                                1. Real Estate & Urban Planners
                                                                                                                                                                              2. Germany
                                                                                                                                                                              3. France
                                                                                                                                                                              4. Spain
                                                                                                                                                                              5. Italy
                                                                                                                                                                              6. Russia
                                                                                                                                                                              7. Nordic
                                                                                                                                                                              8. Benelux
                                                                                                                                                                              9. Rest of Europe
                                                                                                                                                                            2. APAC
                                                                                                                                                                              1. Market Size and Forecast
                                                                                                                                                                                1. By Product Type
                                                                                                                                                                                  1. Concrete Sound Barriers
                                                                                                                                                                                    1. Metal Sound Barriers
                                                                                                                                                                                      1. Wood Sound Barriers
                                                                                                                                                                                        1. Composite & Polymer-Based Barriers
                                                                                                                                                                                          1. Transparent/Acrylic Noise Barriers
                                                                                                                                                                                          2. By Application
                                                                                                                                                                                            1. Highways & Roadways
                                                                                                                                                                                              1. Railways & Public Transit Corridors
                                                                                                                                                                                                1. Airports
                                                                                                                                                                                                  1. Residential & Urban Areas
                                                                                                                                                                                                    1. Industrial & Utility Facilities
                                                                                                                                                                                                    2. By Installation Type
                                                                                                                                                                                                      1. Prefabricated/Modular Installations
                                                                                                                                                                                                        1. Custom-Built Sound Barriers
                                                                                                                                                                                                        2. By Material Type
                                                                                                                                                                                                          1. Concrete
                                                                                                                                                                                                            1. Steel/Metal
                                                                                                                                                                                                              1. High-Performance Polymers
                                                                                                                                                                                                                1. Timber/Wood
                                                                                                                                                                                                                  1. Glass & Acrylic Systems
                                                                                                                                                                                                                  2. By End-User
                                                                                                                                                                                                                    1. Government & Municipal Agencies
                                                                                                                                                                                                                      1. Infrastructure Developers
                                                                                                                                                                                                                        1. Industrial Operators
                                                                                                                                                                                                                          1. Real Estate & Urban Planners
                                                                                                                                                                                                                        2. China
                                                                                                                                                                                                                          1. By Product Type
                                                                                                                                                                                                                            1. Concrete Sound Barriers
                                                                                                                                                                                                                              1. Metal Sound Barriers
                                                                                                                                                                                                                                1. Wood Sound Barriers
                                                                                                                                                                                                                                  1. Composite & Polymer-Based Barriers
                                                                                                                                                                                                                                    1. Transparent/Acrylic Noise Barriers
                                                                                                                                                                                                                                    2. By Application
                                                                                                                                                                                                                                      1. Highways & Roadways
                                                                                                                                                                                                                                        1. Railways & Public Transit Corridors
                                                                                                                                                                                                                                          1. Airports
                                                                                                                                                                                                                                            1. Residential & Urban Areas
                                                                                                                                                                                                                                              1. Industrial & Utility Facilities
                                                                                                                                                                                                                                              2. By Installation Type
                                                                                                                                                                                                                                                1. Prefabricated/Modular Installations
                                                                                                                                                                                                                                                  1. Custom-Built Sound Barriers
                                                                                                                                                                                                                                                  2. By Material Type
                                                                                                                                                                                                                                                    1. Concrete
                                                                                                                                                                                                                                                      1. Steel/Metal
                                                                                                                                                                                                                                                        1. High-Performance Polymers
                                                                                                                                                                                                                                                          1. Timber/Wood
                                                                                                                                                                                                                                                            1. Glass & Acrylic Systems
                                                                                                                                                                                                                                                            2. By End-User
                                                                                                                                                                                                                                                              1. Government & Municipal Agencies
                                                                                                                                                                                                                                                                1. Infrastructure Developers
                                                                                                                                                                                                                                                                  1. Industrial Operators
                                                                                                                                                                                                                                                                    1. Real Estate & Urban Planners
                                                                                                                                                                                                                                                                  2. Korea
                                                                                                                                                                                                                                                                  3. Japan
                                                                                                                                                                                                                                                                  4. India
                                                                                                                                                                                                                                                                  5. Australia
                                                                                                                                                                                                                                                                  6. Singapore
                                                                                                                                                                                                                                                                  7. Taiwan
                                                                                                                                                                                                                                                                  8. South East Asia
                                                                                                                                                                                                                                                                  9. Rest of Asia-Pacific
                                                                                                                                                                                                                                                                2. Middle East and Africa
                                                                                                                                                                                                                                                                  1. Market Size and Forecast
                                                                                                                                                                                                                                                                    1. By Product Type
                                                                                                                                                                                                                                                                      1. Concrete Sound Barriers
                                                                                                                                                                                                                                                                        1. Metal Sound Barriers
                                                                                                                                                                                                                                                                          1. Wood Sound Barriers
                                                                                                                                                                                                                                                                            1. Composite & Polymer-Based Barriers
                                                                                                                                                                                                                                                                              1. Transparent/Acrylic Noise Barriers
                                                                                                                                                                                                                                                                              2. By Application
                                                                                                                                                                                                                                                                                1. Highways & Roadways
                                                                                                                                                                                                                                                                                  1. Railways & Public Transit Corridors
                                                                                                                                                                                                                                                                                    1. Airports
                                                                                                                                                                                                                                                                                      1. Residential & Urban Areas
                                                                                                                                                                                                                                                                                        1. Industrial & Utility Facilities
                                                                                                                                                                                                                                                                                        2. By Installation Type
                                                                                                                                                                                                                                                                                          1. Prefabricated/Modular Installations
                                                                                                                                                                                                                                                                                            1. Custom-Built Sound Barriers
                                                                                                                                                                                                                                                                                            2. By Material Type
                                                                                                                                                                                                                                                                                              1. Concrete
                                                                                                                                                                                                                                                                                                1. Steel/Metal
                                                                                                                                                                                                                                                                                                  1. High-Performance Polymers
                                                                                                                                                                                                                                                                                                    1. Timber/Wood
                                                                                                                                                                                                                                                                                                      1. Glass & Acrylic Systems
                                                                                                                                                                                                                                                                                                      2. By End-User
                                                                                                                                                                                                                                                                                                        1. Government & Municipal Agencies
                                                                                                                                                                                                                                                                                                          1. Infrastructure Developers
                                                                                                                                                                                                                                                                                                            1. Industrial Operators
                                                                                                                                                                                                                                                                                                              1. Real Estate & Urban Planners
                                                                                                                                                                                                                                                                                                            2. UAE
                                                                                                                                                                                                                                                                                                              1. By Product Type
                                                                                                                                                                                                                                                                                                                1. Concrete Sound Barriers
                                                                                                                                                                                                                                                                                                                  1. Metal Sound Barriers
                                                                                                                                                                                                                                                                                                                    1. Wood Sound Barriers
                                                                                                                                                                                                                                                                                                                      1. Composite & Polymer-Based Barriers
                                                                                                                                                                                                                                                                                                                        1. Transparent/Acrylic Noise Barriers
                                                                                                                                                                                                                                                                                                                        2. By Application
                                                                                                                                                                                                                                                                                                                          1. Highways & Roadways
                                                                                                                                                                                                                                                                                                                            1. Railways & Public Transit Corridors
                                                                                                                                                                                                                                                                                                                              1. Airports
                                                                                                                                                                                                                                                                                                                                1. Residential & Urban Areas
                                                                                                                                                                                                                                                                                                                                  1. Industrial & Utility Facilities
                                                                                                                                                                                                                                                                                                                                  2. By Installation Type
                                                                                                                                                                                                                                                                                                                                    1. Prefabricated/Modular Installations
                                                                                                                                                                                                                                                                                                                                      1. Custom-Built Sound Barriers
                                                                                                                                                                                                                                                                                                                                      2. By Material Type
                                                                                                                                                                                                                                                                                                                                        1. Concrete
                                                                                                                                                                                                                                                                                                                                          1. Steel/Metal
                                                                                                                                                                                                                                                                                                                                            1. High-Performance Polymers
                                                                                                                                                                                                                                                                                                                                              1. Timber/Wood
                                                                                                                                                                                                                                                                                                                                                1. Glass & Acrylic Systems
                                                                                                                                                                                                                                                                                                                                                2. By End-User
                                                                                                                                                                                                                                                                                                                                                  1. Government & Municipal Agencies
                                                                                                                                                                                                                                                                                                                                                    1. Infrastructure Developers
                                                                                                                                                                                                                                                                                                                                                      1. Industrial Operators
                                                                                                                                                                                                                                                                                                                                                        1. Real Estate & Urban Planners
                                                                                                                                                                                                                                                                                                                                                      2. Turky
                                                                                                                                                                                                                                                                                                                                                      3. Saudi Arabia
                                                                                                                                                                                                                                                                                                                                                      4. South Africa
                                                                                                                                                                                                                                                                                                                                                      5. Egypt
                                                                                                                                                                                                                                                                                                                                                      6. Nigeria
                                                                                                                                                                                                                                                                                                                                                      7. Rest of MEA
                                                                                                                                                                                                                                                                                                                                                    2. LATAM
                                                                                                                                                                                                                                                                                                                                                      1. Market Size and Forecast
                                                                                                                                                                                                                                                                                                                                                        1. By Product Type
                                                                                                                                                                                                                                                                                                                                                          1. Concrete Sound Barriers
                                                                                                                                                                                                                                                                                                                                                            1. Metal Sound Barriers
                                                                                                                                                                                                                                                                                                                                                              1. Wood Sound Barriers
                                                                                                                                                                                                                                                                                                                                                                1. Composite & Polymer-Based Barriers
                                                                                                                                                                                                                                                                                                                                                                  1. Transparent/Acrylic Noise Barriers
                                                                                                                                                                                                                                                                                                                                                                  2. By Application
                                                                                                                                                                                                                                                                                                                                                                    1. Highways & Roadways
                                                                                                                                                                                                                                                                                                                                                                      1. Railways & Public Transit Corridors
                                                                                                                                                                                                                                                                                                                                                                        1. Airports
                                                                                                                                                                                                                                                                                                                                                                          1. Residential & Urban Areas
                                                                                                                                                                                                                                                                                                                                                                            1. Industrial & Utility Facilities
                                                                                                                                                                                                                                                                                                                                                                            2. By Installation Type
                                                                                                                                                                                                                                                                                                                                                                              1. Prefabricated/Modular Installations
                                                                                                                                                                                                                                                                                                                                                                                1. Custom-Built Sound Barriers
                                                                                                                                                                                                                                                                                                                                                                                2. By Material Type
                                                                                                                                                                                                                                                                                                                                                                                  1. Concrete
                                                                                                                                                                                                                                                                                                                                                                                    1. Steel/Metal
                                                                                                                                                                                                                                                                                                                                                                                      1. High-Performance Polymers
                                                                                                                                                                                                                                                                                                                                                                                        1. Timber/Wood
                                                                                                                                                                                                                                                                                                                                                                                          1. Glass & Acrylic Systems
                                                                                                                                                                                                                                                                                                                                                                                          2. By End-User
                                                                                                                                                                                                                                                                                                                                                                                            1. Government & Municipal Agencies
                                                                                                                                                                                                                                                                                                                                                                                              1. Infrastructure Developers
                                                                                                                                                                                                                                                                                                                                                                                                1. Industrial Operators
                                                                                                                                                                                                                                                                                                                                                                                                  1. Real Estate & Urban Planners
                                                                                                                                                                                                                                                                                                                                                                                                2. Brazil
                                                                                                                                                                                                                                                                                                                                                                                                  1. By Product Type
                                                                                                                                                                                                                                                                                                                                                                                                    1. Concrete Sound Barriers
                                                                                                                                                                                                                                                                                                                                                                                                      1. Metal Sound Barriers
                                                                                                                                                                                                                                                                                                                                                                                                        1. Wood Sound Barriers
                                                                                                                                                                                                                                                                                                                                                                                                          1. Composite & Polymer-Based Barriers
                                                                                                                                                                                                                                                                                                                                                                                                            1. Transparent/Acrylic Noise Barriers
                                                                                                                                                                                                                                                                                                                                                                                                            2. By Application
                                                                                                                                                                                                                                                                                                                                                                                                              1. Highways & Roadways
                                                                                                                                                                                                                                                                                                                                                                                                                1. Railways & Public Transit Corridors
                                                                                                                                                                                                                                                                                                                                                                                                                  1. Airports
                                                                                                                                                                                                                                                                                                                                                                                                                    1. Residential & Urban Areas
                                                                                                                                                                                                                                                                                                                                                                                                                      1. Industrial & Utility Facilities
                                                                                                                                                                                                                                                                                                                                                                                                                      2. By Installation Type
                                                                                                                                                                                                                                                                                                                                                                                                                        1. Prefabricated/Modular Installations
                                                                                                                                                                                                                                                                                                                                                                                                                          1. Custom-Built Sound Barriers
                                                                                                                                                                                                                                                                                                                                                                                                                          2. By Material Type
                                                                                                                                                                                                                                                                                                                                                                                                                            1. Concrete
                                                                                                                                                                                                                                                                                                                                                                                                                              1. Steel/Metal
                                                                                                                                                                                                                                                                                                                                                                                                                                1. High-Performance Polymers
                                                                                                                                                                                                                                                                                                                                                                                                                                  1. Timber/Wood
                                                                                                                                                                                                                                                                                                                                                                                                                                    1. Glass & Acrylic Systems
                                                                                                                                                                                                                                                                                                                                                                                                                                    2. By End-User
                                                                                                                                                                                                                                                                                                                                                                                                                                      1. Government & Municipal Agencies
                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Infrastructure Developers
                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Industrial Operators
                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Real Estate & Urban Planners
                                                                                                                                                                                                                                                                                                                                                                                                                                          2. Mexico
                                                                                                                                                                                                                                                                                                                                                                                                                                          3. Argentina
                                                                                                                                                                                                                                                                                                                                                                                                                                          4. Chile
                                                                                                                                                                                                                                                                                                                                                                                                                                          5. Colombia
                                                                                                                                                                                                                                                                                                                                                                                                                                          6. Rest of LATAM
                                                                                                                                                                                                                                                                                                                                                                                                                                      2. Competitive Landscape, 2025
                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Introduction
                                                                                                                                                                                                                                                                                                                                                                                                                                        2. Outdoor Sound Barriers Market Share Analysis, 2025 (%)
                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Market Share Analysis, 2025
                                                                                                                                                                                                                                                                                                                                                                                                                                          2. Competition Ranking, 2025
                                                                                                                                                                                                                                                                                                                                                                                                                                          3. Key Developments & Growth Strategies
                                                                                                                                                                                                                                                                                                                                                                                                                                            1. Merger & Acquisition
                                                                                                                                                                                                                                                                                                                                                                                                                                            2. Product Launch
                                                                                                                                                                                                                                                                                                                                                                                                                                            3. Expansion
                                                                                                                                                                                                                                                                                                                                                                                                                                          4. Consolidated SWOT Analysis of Key Players
                                                                                                                                                                                                                                                                                                                                                                                                                                      3. Company Profile
                                                                                                                                                                                                                                                                                                                                                                                                                                        1. Koch Industries
                                                                                                                                                                                                                                                                                                                                                                                                                                          1. Business Overview
                                                                                                                                                                                                                                                                                                                                                                                                                                          2. Financial Data
                                                                                                                                                                                                                                                                                                                                                                                                                                          3. Key Product domains
                                                                                                                                                                                                                                                                                                                                                                                                                                          4. Recent Developments
                                                                                                                                                                                                                                                                                                                                                                                                                                        2. Fort Miller Group
                                                                                                                                                                                                                                                                                                                                                                                                                                        3. Durisol Ltd.
                                                                                                                                                                                                                                                                                                                                                                                                                                        4. Sound Seal LLC
                                                                                                                                                                                                                                                                                                                                                                                                                                        5. Carpio Industries
                                                                                                                                                                                                                                                                                                                                                                                                                                        6. Noise Barriers Inc.
                                                                                                                                                                                                                                                                                                                                                                                                                                        7. Mason Industries
                                                                                                                                                                                                                                                                                                                                                                                                                                        8. IAC Acoustics
                                                                                                                                                                                                                                                                                                                                                                                                                                        9. Acoustiblok
                                                                                                                                                                                                                                                                                                                                                                                                                                        10. Armtec Infrastructure