... 1.Excellent wheather resistance. 2.Anti-ageing, 3.super resistant of hail, 4.sparkling fire, PVC waterproof membrane: Width: 2 ... installing, secure. 10. Easy treatments to the delicate parts of corners and edges. 11. Convenient maintenance with low cost. ... used in the roofs of civil buildings, tunnels, channels, subways, highways, planting roofs, the roofs of steel frame structure buildings, and etc. ...