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US 4,396,686 AGranted
Roofing element for roofs of buildings
OwnerGuido Fiorioinventor
Life of this patent
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Abstract
A roofing element for roofs of civil and industrial buildings comprising a layer of expanded polyurethane having high thermal insulation capacity, a support made of zinc-plated sheet steel overlying said layer of expanded polyurethane and adhering thereto at all points, a thin layer of a bituminous compound and a continuous layer of stone material in fine scales caused to adhere to said thin layer of bituminous compound.
Claims1
A roofing element for roofs of civil and industrial buildings, characterized in that it comprises, in combination:
- (a) a layer of expanded polyurethane having high thermal insulation capacity;
- (b) a support made of zinc-plated sheet steel overlying said layer (a) of expanded polyurethane and adhering thereto at all points;
- (c) a thin layer of a bituminous compound, and
- (d) a continuous layer of stone material in fine scales caused to adhere to said thin layer of bituminous compound as defined at (a).
1 more element
Dependencies are inferred from the claim text.