Open-cell foams in roofing systems

Details Open-cell foams in roofing systems Open-cell foams in roofing systems

E - Fixed Constructions

04

D

E04D 11/02 (2006.01)

Patent

CA 2189663

Disclosed is a roofing system (20) for structure such as a building. The system (20) comprises a roof deck (10), a plurality of panels (12) of an extruded alkenyl aromatic polymer foam above and adjacent the deck (10); and a substantially waterproof membrane (14), above and adjacent to the foam. The foam has an open cell content of 30 percent or more. The foam provides excellent mechanical support for the membrane (14), and is water resistant. The foam further has a high heat distortion temperature, and is substantially free of distortion at high service temperatures encountered in roofing systems. Further disclosed is a recovery roofing system employing the above foam. Further disclosed are processes for constructing a new roofing system and a recovery roofing system.

L'invention concerne un système de couverture (20) pour une structure telle qu'un bâtiment. Le système (20) comprend un plancher terrasse (10), une pluralité de panneaux (12) en mousse polymère aromatique alcényle extrudée, posés au-dessus du plancher terrasse (10) et adjacents à celui-ci, et une membrane imperméable (14) posée au-dessus de la mousse et adjacente à celle-ci. La mousse contient 30 % ou plus d'alvéoles ouvertes. La mousse est imperméable à l'eau et constitue un excellent support mécanique de la membrane (14). De plus, la mousse présente un point de déformation à chaud élevé et ne se déforme pas aux températures de services élevées régnant dans des systèmes de couverture. L'invention concerne également un système de couverture de restauration comprenant ladite mousse, et des procédés de fabrication d'un système de couverture neuve et d'un système de couverture de restauration.

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