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Underground & Direct Burial Pipe Insulation Products | Owens Corning Insulation
Owens Corning

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.
        Hydrocal® B-11

        Cellular Glass InsulationHydrocal® B-11

        Hydrocal® B-11 is a a reactive gypsum product that is mixed with water to form an inorganic non-combustible adhesive or coating.
          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.

                                    Application Guides

                                    Underground piping

                                    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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                                    District heating pipes

                                    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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                                    Burried water 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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                                    Underground gas piping

                                    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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                                    Knowledge Articles & Case Studies

                                    Chemical containers against a blue periodic table background

                                    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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                                    Fire performance, insulation fire performance, Process Piping and Equipment, fire protection insulation, Owens Corning Foamglas Insulation

                                    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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                                    Industrial Insulation

                                    Design considerations for pipe supports and the influence on thermal performance

                                    The choice of insulation material is critical to the long-term viability of a project. The same is true for determining the appropriate method for supporting insulated piping.
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                                    Industrial plant exterior

                                    Compressive strength performance in Industrial Insulation

                                    When considering insulation materials, compressive strength is often overlooked as a distinguishing feature in the choice of insulation materials; however, it is needed to support loads in many applications.
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                                    Prefabricated Foamglas insulation piece being installed on a pipe.

                                    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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                                    corrosion on pipes

                                    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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                                    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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