The Arrowbase G2 Base is a non-porous 28 pound base sheet, uniquely designed and constructed to be strong while remaining wrinkle resistant. G2 Base is used as the base ply in a wide variety of hot, cold and torch applied buildup and modified bitumen roofing applications. This unique combination of strength and suppleness is achieved by coating a heavyweight, specially designed fiberglass mat with Type IV asphalt. The asphalt coating helps maintain a uniform consistency on both sides of the sheet and eliminates pinholes. The suppleness and extreme pliability of G2 Base make it a good alternative for organic base where a decay resistant inorganic mat is desired.