Roof web for pitched roofs

US4630421A · kind A · utility

Assignee

• Metzeler Schaum GmbH · DE

Inventors

• Hermann Diehl · Grünwald, DE
• Gunter Baatz · Rösrath, DE
• Walter Machholz · Memmingen, DE

Key dates

• Filing date: Nov 29, 1985
• Grant date: Dec 23, 1986
• Expiry date: Nov 29, 2005

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E04D12/002
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A roof web for pitched roofs includes a vapor diffusion permeable but surface water impermeable foil, a reinforcement disposed below the foil, and an open-pore soft foam material disposed below the reinforcement and connected to the foil through the reinforcement, the reinforcement being a tear-proof grid fabric with a diffusion equivalent air layer thickness of substantially 0.07-0.12 m.