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Underground & Direct Burial Pipe Insulation Products | Owens Corning Insulation

Quality solution for underground, direct burial and trench insulation

For direct burial, trench, and underground pipe insulation needs, Owens Corning Insulation provides solutions tailored to the unique challenges of commercial and industrial environments. Our selection includes cellular glass and mineral wool insulation products that help with the vital priorities of underground pipe applications. Direct burial pipe insulation is often the most efficient strategy for deploying underground piping systems, bypassing expensive tunnels, and accelerating a system's installation. These products support steam and hot water pipe insulation, offering performance features suited to below-ground conditions. 

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FOAMGLAS® HLB 1000 Insulation (ASTM)

Cellular Glass InsulationFOAMGLAS® HLB 1000 Insulation (ASTM)

FOAMGLAS® HLB Cellular Glass Insulation is specially designed for high load bearing industrial applications.
    FOAMGLAS® HLB 800 Insulation (ASTM)

    Cellular Glass InsulationFOAMGLAS® HLB 800 Insulation (ASTM)

    FOAMGLAS® HLB Cellular Glass Insulation is specially designed for high load bearing industrial applications.
      FOAMGLAS® ONE™ insulation (ASTM)

      Cellular Glass InsulationFOAMGLAS® ONE™ insulation (ASTM)

      FOAMGLAS® ONE™ insulation is a lightweight, rigid material of millions of sealed glass cells. Manufactured in blocks, it’s shaped into various sizes to meet industrial and commercial insulation needs.
        No-Wrap Fiberglas™ Pipe Insulation

        Fiberglass InsulationNo-Wrap Fiberglas™ Pipe Insulation

        Owens Corning® No-Wrap Fiberglas™ Pipe Insulation is molded of heavy density resin bonded inorganic glass fibers that come in one-piece, 36" (914mm) long, hinged sections. The insulation is tailored to fit for copper, iron, PVC, and other polymer pipe applications.
          PC® 150 Glass Reinforcing Mesh

          Cellular Glass InsulationPC® 150 Glass Reinforcing Mesh

          PC® 150 Mesh is an open mesh, alkali-resistant glass fabric for reinforcing mastic finishes and coatings over FOAMGLAS® insulation.
            PC® 79 Mesh Fabric

            Cellular Glass InsulationPC® 79 Mesh Fabric

            An open mesh, synthetic fabric for reinforcing PITTCOTE® 300 Coating and PITTCOTE® 404 Coating when applied over FOAMGLAS® insulation.
              PC® 80M Mortar

              Cellular Glass InsulationPC® 80M Mortar

              PC® 80M Mortar is a two component inorganic mortar used as a stainless steel compatible bore coating or in forming high temperature reinforced shapes.
                PC® HI-TEMP / RTV Silicone Adhesive

                Cellular Glass InsulationPC® HI-TEMP / RTV Silicone Adhesive

                PC® HI-TEMP / RTV Silicone Adhesive is a one part, neutral cure, silicone adhesive / sealant formulated for use at high temperatures.
                  PC® RTV 450 Silicone Adhesive

                  Cellular Glass InsulationPC® RTV 450 Silicone Adhesive

                  PC® HI-TEMP / RTV Silicone Adhesive is a one part, neutral cure, silicone adhesive / sealant formulated for use at high temperatures.
                    PC® Silicone Spacer

                    Cellular Glass InsulationPC® Silicone Spacer

                    The PC® Silicone Spacer is a high temperature, silicone molded support element used in the FOAMGLAS® Insulation Spacer System. The Spacer elements is used to create the air gap between the pipe and the bore of the insulation section to enable possible drainage.
                      PC® Silicone Strip

                      Cellular Glass InsulationPC® Silicone Strip

                      The PC® Silicone Strip is a high temperature silicone molded strip used to fill the spacer air gap between the pipe and the bore of the insulation section to create water stops at supports, protrusions and terminations in the FOAMGLAS® Insulation Spacer System.
                        PITTCOTE® 300E Coating

                        Cellular Glass InsulationPITTCOTE® 300E Coating

                        PITTCOTE® 300E is a liquid applied moisture cure vapor retarder coating especially formulated for use with FOAMGLAS® insulation.
                          PITTWRAP® CW PLUS Jacketing

                          Cellular Glass InsulationPITTWRAP® CW PLUS Jacketing

                          PITTWRAP® CW PLUS Jacketing is a 1.27mm (50 mil) thick self-sealing modified bitumen membrane for protecting underground FOAMGLAS® insulation on chilled water and hot service pipelines.
                            PITTWRAP® HS Jacketing

                            Cellular Glass InsulationPITTWRAP® HS Jacketing

                            PITTWRAP® HS Jacketing is a a heat sealable multiple laminate for protecting underground FOAMGLAS® insulation for outer surface temperatures below 190°F. It consists of three layers of a polymer modified bitumen compound separated by glass fabric reinforcement and aluminum foil.
                              PITTWRAP® SS Jacketing

                              Cellular Glass InsulationPITTWRAP® SS Jacketing

                              PITTWRAP® SS Jacketing is a 1.78 mm (70 mil) thick self-sealing modified bitumen membrane for protecting underground FOAMGLAS® insulation systems with outer temperatures below 170°F.
                                PITTWRAP® SS Primer

                                Cellular Glass InsulationPITTWRAP® SS Primer

                                PITTWRAP® SS Primer is a specially formulated primer that promotes adhesion of the PITTWRAP® SS Jacketing when the laps are slightly dusty or the application is below 50°F.
                                  Thermafiber® Industrial Board

                                  Mineral Wool InsulationThermafiber® Industrial Board

                                  Owens Corning® Thermafiber® Industrial Board is an economical, rigid, preformed mineral fiber insulation that offers excellent thermal and acoustical performance in both hot and cold applications.

                                    Application Guides

                                    Above ambient underground process piping and equipment

                                    A FOAMGLAS® insulation system helps to ensure that the temperature inside the pipes is controlled and kept stable by limiting the heat transfer to the cold soil. In most of these applications it is vital that the temperature is kept constant over the entire length of the piping network to ensure process control.
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                                    Underground piping

                                    Steam and hot water underground process piping and equipment

                                    A FOAMGLAS® insulation system helps ensure that the temperature inside the steam pipes is controlled and kept stable, limiting the heat transfer to the cold soil, and helping the system to operate efficiently.
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                                    District heating pipes

                                    Underground sewage pipes

                                    The impermeability of FOAMGLAS® insulation helps mitigate moisture from rain or ground water that can affect the integrity of the system. This assists in the system remaining dry - helping limit corrosion, and provide a constant thermal performance.
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                                    Burried water pipes

                                    Below ambient underground process piping and equipment

                                    A FOAMGLAS® insulation system helps protect underground pipes from possible ingress of moisture, limiting corrosion of the pipe. FOAMGLAS® insulations helps keep the system dry and maintain its thermal efficiency over time, so the integrity of the content is maintained and operating costs are controlled.
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                                    Underground gas piping

                                    Knowledge Articles & Case Studies

                                    Key factors that affect material selection in LNG service

                                    LNG is a mixture of low-molecular-weight hydrocarbons that has been cooled down to liquid form for ease and safety of non-pressurized storage or transport.
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                                    LNG (Liquified Natural Gas) tanker anchored in Gas terminal gas tanks for storage

                                    The benefits of using prefabricated FOAMGLAS® insulation components

                                    Using prefabricated pieces will save considerable amounts of time which can lead to labor costs to decrease as well, resulting in a lower total installed cost.
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                                    Prefabricated Foamglas insulation piece being installed on a pipe.

                                    How to control Corrosion Under Insulation

                                    Moisture must be present for corrosion to occur. Common sources of moisture are condensation, cleaning, process leaks, precipitation, ice melt and fog.
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                                    corrosion on pipes

                                    FOAMGLAS® Insulation Systems for Mitigating Corrosion Under Insulation

                                    The pipes and equipment that process or carry water, steam, gas and petrochemicals must perform reliably under harsh industrial and environmental conditions that can lead to CUI. The insulating material and system is an important decision to mitigate CUI.
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                                    Foamglas Insulation system helping to mitigate corrosion

                                    The chemical durability of an insulation material and its influence on performance

                                    The chemical environment to which insulation materials are exposed can adversely affect the performance of an insulation material.
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                                    Chemical containers against a blue periodic table background

                                    Fire Performance of Foamglas insulation systems

                                    The goal of fire endurance testing of a mechanical insulation system is to demonstrate that the system will help to prevent a pipe or piece of equipment from reaching a specified temperature too quickly.
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                                    Fire performance, insulation fire performance, Process Piping and Equipment, fire protection insulation, Owens Corning Foamglas Insulation

                                    More About Owens Corning Direct Buried and Trench Insulation

                                    Cellular glass insulation products excel in underground pipe insulation applications, including trench pipe insulation, particularly in environments requiring moisture protection. This moisture resistance is crucial for preventing pipe corrosion and ensuring the infrastructure's longevity. Cellular glass insulation’s utility extends to district heating and campus energy systems, which demand consistent performance and reliability. 

                                    Our mineral wool insulation products provide a versatile solution for hot water and steam pipe insulation. Mineral wool insulation products contribute to the system's overall energy efficiency by maintaining temperature control within pipes. Additionally, mineral wool’s inherent acoustical properties help in reducing noise transmission. This noise reduction is an advantage in densely populated or quiet-required areas. These insulation products are adaptable and capable of withstanding diverse environmental conditions and ensuring reliable insulation for buried piping systems. 

                                    Our products are designed for easy handling and installation, meeting stringent industry standards and regulations, including fire safety. Opting for Owens Corning's direct burial and underground pipe insulation products means choosing a path that values durability, safety, compliance, and effective thermal management in challenging underground applications. 

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