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Professional Roofing



ASTM C1289; polyisocyanurate; insulation

Faced rigid board polyisocyanurate insulation is the most popular type of insulation used in low-slope roof systems in the U.S. However, the product’s ASTM International standard is confusing and cumbersome, which often results in inadequate or improper specifications. If you are involved with specifying or installing polyisocyanurate insulation, you should be aware of these concerns.

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