The Ametalin Roof Sarking Silversark is a reflective insulation with an extra heavy-duty reflective foil insulation and radiant barrier. It is a great all-round weather barrier for your home with low flammability, which is suitable to all bushfire attack levels in bushfire-prone areas. The SilverSark insulation also has an advanced resistant to heat. SilverSark is puncture resistant with its high strength and water barrier, a Class 2 Vapour Barrier. This product can be installed in metal roof sarking, tile roof sarking, or as a premium wall wrap.