This Ametalin FireSark Non-Breather Wrap is a 97% reflective insulation that is extra heavy duty. It is an ember-proof reflective insulation used for non-combustible constructions in all BAL zones 12.5 to FZ. Due to this, it has a superior heat resistance, strength, and durability with tear resistance. The FireSark offers a Triple Crown of Safety and has long life components, as well as being classified as a Class 2 Vapour Barrier. The Ametalin FireSark Non-Breather Wrap can be installed in metal roof sarking, tile roof sarking, or as a premium wall wrap that is ideal for typical brick veneer and lightweight cladding.