Division 7 Ebook Page 557 UL Evaluation Report

Page 10 of 13 Table 3 - Foamular XPS Insulation Foundation Properties ASTM TYPE Foundation Modulus (pci) 1,2,3 Compressive Stress (psi) 1 in Thick 1.5 in Thick 2 in Thick 2.5 in Thick 3 in Thick 4 in Thick Live 5 Recommended Dead 5 Recommended Ultimate 4 Foamular 150 Type X 590 550 500 450 400 300 3 5 15 Foamular 250 Type IV 750 710 675 595 565 510 5 8.3 25 Foamular 400 Type VI 1,100 1,000 900 780 680 650 8 13.3 40 Foamular 600 Type VII 1,520 1,400 1,275 1,150 1,040 790 12 20 60 Foamular 1000 Type V - - 2,600 - - 20 33.3 100 1. Foundation modulus is a measure of deflection at given loads, expressed as inches deflection per inch of thickness or "pci". 2. For insulation installed in multiple layers, assuming the layers are identical, the foundation modulus for the system equals the foundation modulus for one of the layers divided by the total number of layers. 3. For insulation systems that utilize a variety of thicknesses, the system foundation modulus is determined by adding the reciprocal of the foundation modulus of the individual layers. The total is the reciprocal value for the foundation modulus of the entire system. 4. Ultimate compressive stress is measured at 10% deformation or yield, whichever occurs first. For thinner product (1 in.), yield typically occurs first. For thicker products (1.5 in. and thicker), yield typically occurs first with 3% to 4% deformation. 5. Recommended stress (load) levels will limit long term compressive creep to not exceed 2% in 20 years. 7. CONDITIONS OF USE 7.1 General: The FOAMULAR XPS insulation boards described in this report comply with, or are suitable alternatives to what is specified in those codes listed in Section 2 of this report, subject to the following conditions. The FOAMULAR XPS insulation boards must be produced, identified, and installed in accordance with the manufacturer's published installation instructions and this report. If there is a conflict between this report and the manufacturer's instructions this report governs.

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