Products / CertainTeed Flintglas Ply 4

Non-modified, permeable fiberglass-reinforced ply sheet used in hot-applied built-up roof systems. It is 0.6 mm (24 mils) thick, weighs 36 lbs per roll and covers five squares. CertainTeed lists it as meeting UL G1. Warranty terms of ten to twenty-five years depend on the system specification and product selection.