Firestone Building Products offers two types of polyisocyanurate insulation boards: ISO 95+ GL Insulation Board and Firestone ISOGARD HD Cover Board.
The former provides high-energy efficiency and is compatible with all types of commercial roofing systems. It’s lightweight and suited for direct application onto steel roofing, concrete or wood deck. The latter is a high-density cover board that combines high-impact resistance with easy installation.
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