APP waterproof membrane 1. Name: APP modified bitumen waterproof membrane 2.Featurepuncture, tear , corrosion, and mildew resistance amd ... (G), fiberglass & polyester felt (PYG)2) supper surface: polyethylene film(PE), sand (S), mineral schist(M)3) lower surface: polyethylene ... film(PE), sand (S)4) material property4. Application range Widely ...