| 摘要 |
The beneath-roof element which can be laid directly on roof rafters is a combination of a flexible beneath-roof sheet (2) on a supporting layer (3), of a core layer (5) which consists of fibre insulating material and is reinforced by webs (6), and of a visible-underside layer (7) which acts as a vapour barrier. The visible-underside layer (7) is designed as a supporting hard layer, e.g. as a polyester panel. The fibre insulating material (5), e.g. rock wool or glass wool, has a compressive strength of at least 2 x 10<4> Pa at 10% compressive strain. The beneath-roof sheet (2) is adhesively bonded to the fibre insulating material (5) via a fixed supporting layer (3), e.g. a polyester layer, which serves, in particular, as a backing for welding the flexible beneath-roof sheet (2). This beneath-roof element, with optimum heat insulation, does not have the disadvantage of cold bridges and, having conventional dimensions, is additionally designed as a self-supporting element. By connection of the uppermost layer, the beneath-roof element permits a roof, which is to be erected, to be sealed off in a watertight manner towards the outside. <IMAGE>
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