APP/sbs Modified Bitumen Waterproof Membrane 　　 The successful application in the construction project of our countify that our SBS/APP modified bitumen waterproof membranes are of top quality. ● Roll weight/area/thickness standard thickness 2mm 3mm 4mm upward surface finish PE S PE S M PE S M PE S M area m 2 /roll standard area 15 10 10 7.5 tolerance ± 0.15 ± 0.10 ± 0.10 ± 0.10 rollweight， ≥ kg/roll 33.0 37.5 32.0 35.0 40.0 42.0 45.0 50.0 31.5 33.0 37.5 thickness mm average ≥ 2.0 3.0 3.2 4.0 4.2 4.0 4.2 minimum 1.7 2.7 2.9 3.7 3. 3.7 3.9 ● physical characteristics ( click to look over ) Telephone: 86-536-5512369 Mobile Phone: 0086-13336362986 Fax: 86-536-5511666 Website: