Roofing Insulation and Cover Boards

Roof Insulation and Cover Boards

Family Description

Our broad line of polyiso insulation products can address your R-value requirements. We are a PIMA member and are audited by their QualityMark program. We have a wide range of facers that cover all ASTM Type II designations, and we offer a full line of composite products.

Adding a cover board enhances the long-term performance of a commercial roofing system. We offer high-density polyiso, low-density polyiso, cement, and gypsum cover boards. We've got you covered with solution for all situations you might encounter: a system for high-impact zones, fire-retardant solutions that meet UL Class A requirements, products that do not support mold growth and more. 

Products

Polyiso Insulation

  • ENRGY 3 - Flat and Tapered

    ENRGY 3 - Flat and Tapered

    ENRGY 3 is a closed-cell polyisocyanurate foam core insulation board offering a high R-value to keep your building well insulated from the elements.
  • ENRGY 3 CGF - Flat and Tapered

    ENRGY 3 CGF - Flat and Tapered

    ENRGY 3 CGF is a closed-cell polyisocyanurate foam core with an inorganic-coated glass facer on each side. It offers high R-value per inch and achieves a UL Class A approval in select systems.

Polyiso Cover Boards

  • ProtectoR HD

    ProtectoR HD

    ProtectoR HD is a high-density polyiso cover board that provides excellent resistance against harsh rooftop conditions including hail, wind uplift, puncture and moisture. 
  • SeparatoR

    SeparatoR

    SeparatoR provides an economical solution for mechanically fastened single ply membrane recover applications while adding thermal insulation value to your building.
  • SeparatoR CGF

    SeparatoR CGF

    SeparatoR CGF is a versatile, ½"-thick cover board solution that is designed for re-cover applications and offers performance and value.

Gypsum Roof Boards

Cement Roof Boards

  • DEXcell Cement Roof Board

    DEXcell Cement Roof Board

    DEXcell Cement Roof Board is a cover board that is able to withstand prolonged exposure to moisture and meets FM Class 1 fire barrier requirements.
  • SECUROCK Cement Roof Board

    SECUROCK Cement Roof Board

    SECUROCK Cement Roof Board is ideal for liquid applied membrane roof systems. It has superior wind-uplift performance for a wide variety of roof assemblies and excellent fire performance.

Perlite Cover Boards and Accessories

  • DuraBoard

    DuraBoard

    DuraBoard uses expanded perlite and reinforcing cellulosic fibers to provide excellent insulation with a stable R-value, fire resistance, and a high recycled content. It is used in multi-ply systems and can be installed in a number of ways.
  • FESCO Board

    FESCO Board

    JM FESCO Board is a protective perlite-based cover board or low-thermal insulation board proven to reduce blistering in hot-asphalt applications.
  • FESCO Board HD

    FESCO Board HD

    JM FESCO Board HD is a high-density, protective, perlite-based cover board or low-thermal insulation board proven to reduce blistering in hot-asphalt applications.
  • FesCant Plus and Tapered FESCO Edge Strip

    FesCant Plus and Tapered FESCO Edge Strip

    FesCant Plus and Tapered FESCO Edge Strip are high-density, laminated cant board made of high strength fibers and expanded perlite.
  • Half-Inch Retro-Fit Board

    Half-Inch Retro-Fit Board

    1/2" Retro-Fit Board is a low-thermal, perlite-based cover board with recycled materials providing strength to the board.
  • RetroPlus Roof Board

    RetroPlus Roof Board

    RetroPlus Roof Board is a high-density, expanded, perlite-based cover board engineered to optimize system performance across all applications.
  • Tapered FESCO Board

    Tapered FESCO Board

    Tapered, protective, perlite-based cover board or low thermal insulation board proven to reduce blistering in hot-asphalt applications.

Polyiso Insulation

  • ENRGY 3 - Flat and Tapered

    ENRGY 3 - Flat and Tapered

    ENRGY 3 is a closed-cell polyisocyanurate foam core insulation board offering a high R-value to keep your building well insulated from the elements.
  • ENRGY 3 CGF - Flat and Tapered

    ENRGY 3 CGF - Flat and Tapered

    ENRGY 3 CGF is a closed-cell polyisocyanurate foam core with an inorganic-coated glass facer on each side. It offers high R-value per inch and achieves a UL Class A approval in select systems.

Polyiso Cover Boards

  • ProtectoR HD

    ProtectoR HD

    ProtectoR HD is a high-density polyiso cover board that provides excellent resistance against harsh rooftop conditions including hail, wind uplift, puncture and moisture. 
  • SeparatoR

    SeparatoR

    SeparatoR provides an economical solution for mechanically fastened single ply membrane recover applications while adding thermal insulation value to your building.
  • SeparatoR CGF

    SeparatoR CGF

    SeparatoR CGF is a versatile, ½"-thick cover board solution that is designed for re-cover applications and offers performance and value.

Gypsum Roof Boards

Cement Roof Boards

  • DEXcell Cement Roof Board

    DEXcell Cement Roof Board

    DEXcell Cement Roof Board is a cover board that is able to withstand prolonged exposure to moisture and meets FM Class 1 fire barrier requirements.
  • SECUROCK Cement Roof Board

    SECUROCK Cement Roof Board

    SECUROCK Cement Roof Board is ideal for liquid applied membrane roof systems. It has superior wind-uplift performance for a wide variety of roof assemblies and excellent fire performance.

Perlite Cover Boards and Accessories

  • DuraBoard

    DuraBoard

    DuraBoard uses expanded perlite and reinforcing cellulosic fibers to provide excellent insulation with a stable R-value, fire resistance, and a high recycled content. It is used in multi-ply systems and can be installed in a number of ways.
  • FESCO Board

    FESCO Board

    JM FESCO Board is a protective perlite-based cover board or low-thermal insulation board proven to reduce blistering in hot-asphalt applications.
  • FESCO Board HD

    FESCO Board HD

    JM FESCO Board HD is a high-density, protective, perlite-based cover board or low-thermal insulation board proven to reduce blistering in hot-asphalt applications.
  • FesCant Plus and Tapered FESCO Edge Strip

    FesCant Plus and Tapered FESCO Edge Strip

    FesCant Plus and Tapered FESCO Edge Strip are high-density, laminated cant board made of high strength fibers and expanded perlite.
  • Half-Inch Retro-Fit Board

    Half-Inch Retro-Fit Board

    1/2" Retro-Fit Board is a low-thermal, perlite-based cover board with recycled materials providing strength to the board.
  • RetroPlus Roof Board

    RetroPlus Roof Board

    RetroPlus Roof Board is a high-density, expanded, perlite-based cover board engineered to optimize system performance across all applications.
  • Tapered FESCO Board

    Tapered FESCO Board

    Tapered, protective, perlite-based cover board or low thermal insulation board proven to reduce blistering in hot-asphalt applications.

Use our locator to find your nearest contractor or distributor.

Documents

Maximizing Your Roof's Protection From Hail

When it comes to your roof, hail can cause significant damage. However, incorporating the appropriate cover board into your roofing system can provide you with superior protection. Upgrade your roof to VSH-rated with an FM-approved cover board today!

FM VSH Approval Rating Image of Hand with a Hail Ball and Custom Logo

Very Severe Hail is two inches or wider in diameter.

Hail can fall as speeds up to 72 mph

The Very Severe Hail region was recently expanded. Are you in the danger zone? Visit the FM Global natural hazards map here.

Roofing Institute Contractor Training

Our JM approved contractors can take advantage of hands-on training and learn all the latest best practices for your profession through our learning program. As low-slope roof technology, materials and performance demands evolve, it is crucial to understand new materials and technologies. JM has built an education and development initiative that utilizes our over 160 years of experience in commercial roofing.

Training mechanically fastening TPO around a penetration.

BURSI for Design Professionals

Our BURSI® program, run by our Specifier Services Team offers customizable education programs that are certified by American Institute of Architects (AIA). We offer anything from one-hour “Lunch and Learns” to a 10-hour, multiple-day seminar. Our program is known as (BURSI) Better Understanding of Roofing Systems Institute. Please contact your local sales representative for more information on upcoming BURSI dates or visit our calendar to see the next educational seminar is in your area.

Training mechanically fastening TPO around a penetration.

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