FIELD: construction industry, light roofing. SUBSTANCE: material of covering is material with wave-shaped profile. One surface of material has recesses in convex part of waves required for fixing roof tiles. Convex parts of waves have top fitted with irregularities of 0.1 to 0.9 mm. EFFECT: increased rigidity of covering. 9 cl, 9 dwg
Authors
Dates
2002-08-27—Published
1997-11-11—Filed