Height of knobs: ~10mm
Mass per unit area: ~700G/M2
Compression strength: ~300 kN/m2 (= 30 tons/m2)
Air volumen between the knobs: ~5.6 L/m2
Length of roll: 16.67m
Width of roll: 1, 35m;

Fields of application:
In structures with high drainage and water retaining capacity (intensive or extensive flat-roofs)
Tunnel constructions
Undergrand car park constructions
The greenness of the house's roof
Scenic spots construction engineering
Football court & Golf court