Labels:kite | window OCR: Prev Next Water Management of the Building Envelope Under Slab Vapor Barriers 15 mil. Vapor Barrier, Under Slab Ground and Green roof Membrane and Pond Liner Cia donsity polyethylene How is it made? Composition by Laver Top to Bottom: One 1 laver blown low density virgin polvethylene {LDPE} to ASTM D4551 One (1] layer of extruded low density virgin polyethylene (LDPE copolymer to ASTM D4551 One polvethylene 1 layer {LDPE] blown to low density D4551. virgin ono donsity ASTM poiyethylene What made of Virgin low-density polvethvlene 108 oclvethylene polyethy lene trudec copolvmer densit 04551 pcirethylene