Firestone ISO 95+ polyiso insulation offers high-energy efficiency through the highest R-value ratings per inch versus other insulation materials. Compatible with all types of commercial roofing systems, the lightweight, easy-to-handle insulation is especially suited for direct application on FM approved and UL classified steel roof deck assemblies. Standard flat Firestone ISO 95+ Insulation is available in board sizes of 4’ x 4’ and 4’ x 8’ and in thicknesses from 1” to 4”.
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PolyIso Insulation Brochure - Item 1234 -- Updated 01/12 (3038.3Kb)