ISO 95+™ GL Insulation

Firestone ISO 95+ GL™ 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 0.5″ to 4.5″ subject to availability.

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