Insulating and impervious roofing panels
First Claim
1. A heat insulating and liquid impervious fibrous panel positionable between a roof with a slight slope and at least one hot applied bituminous coating or sheathing, comprising:
- a mat consisting of a dense felt of mineral fibers bonded together by a first thermosetting binder finely dispersed in the felt, and a composite waterproof impervious covering comprising a reinforcing layer of mineral fibers impregnated with a second binder and glued by said second binder to said dense felt and, a sheet of separating agent capable of binding to the reinforcing layer by means of said second binder impregnating said reinforcing layer, and capable of selt hot welding.
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Accused Products
Abstract
This invention relates to a fibrous panel and to a process and apparatus for its manufacture, the panel includes a dense felt mat (2) of mineral fibres having on at least one of its main surfaces an impervious covering (3, 7) consisting of a reinforcing film (3) of mineral fibres impregnated with a binder, for example bitumen, and bonded to the felt (2) by the binder, and having, on the external surface, a separating agent (7) glued to the film (3) by the binder, the agent (7) being self welding in the heat. The panels according to this invention are advantageous for the insulation and weatherproofing of roofs, especially those with only a slight slope, in particular on account of their reliability in use as well as that of the impervious coverings for which they serve as support.
21 Citations
20 Claims
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1. A heat insulating and liquid impervious fibrous panel positionable between a roof with a slight slope and at least one hot applied bituminous coating or sheathing, comprising:
a mat consisting of a dense felt of mineral fibers bonded together by a first thermosetting binder finely dispersed in the felt, and a composite waterproof impervious covering comprising a reinforcing layer of mineral fibers impregnated with a second binder and glued by said second binder to said dense felt and, a sheet of separating agent capable of binding to the reinforcing layer by means of said second binder impregnating said reinforcing layer, and capable of selt hot welding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification