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  1. JMs Polyisocyanurate foam, known as TRYMER® PIR, is a closed-cell, high-performance insulation for use in industrial and commercial applications. TRYMER PIR is manufactured into bunstocks to be fabricated into the appropriate shapes and sizes for pipes, vessels, equipment, and duct applications.

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  2. Closed Cell Polyisocyanurate Foam Core: Provides high R-value per inch in built-up, modified bitumen, metal roof and single ply roof systems, and approved for direct application to steel decks.

  3. Johns Manville Polyiso foam continuous insulation boards provide a layer of insulation to reduce thermal bridging and improve energy efficiency. Polyiso consists of a uniform closed-cell polyisocyanurate foam core and provides one of the highest R-values per inch of any rigid insulation.

  4. Basically, you just insert how many inches of ISO you are using, and the calculator will determine the R-value of that thickness of polyiso. Below the calculator, you will also find the ‘ISO R-Value Thickness Chart’ that specifies what R-values different thicknesses of polyisocyanurate have.

  5. NailboardTM is a rigid roof insulation board composed of a closed-cell polyisocyanurate foam core bonded to 7⁄16" (11 mm) oriented strand board (OSB) on one side and a universal fiber glass reinforced facer on the other. It is designed for use as an insulation/nailbase underlayment for a variety of roofing systems.

  6. JM Revised LTTR Values: JM suggests that design professionals use a 5.7 R/inch as a “design specification” for its foam products. Prior to this, 6.0 R/inch was the “design specification” for polyiso. Specifically, the new LTTR values are compared to the old as follows: LTTR Change. OLD LTTR (CAN/ULC-S770-03)

  7. DESCRIPTION. Johns Manville CI Max® applications. It is composed of a uniform closed-cell polyisocyanurate foam core with a glass-mat reinforced 1.5 mil embossed aluminum facer that is meant to be left exposed. Available in a white. commercial, agricultural and industrial buildings.

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