| 摘要 |
The invention relates to a roofing-material provided with perforations and comprising a bituminized carrier with a non-sticking lower surface and destined for being applied on a substratum and for being covered by an upper layer, which may contain a carrier which is bituminized with modified bitumen, and which may be applied by means of a torch. According to the invention the carrier of the roofing-material is bituminized with modified bitumen, and the perforations are so large that the upper layer can be directly applied on the roofing-material by means of a torch and can be adhered to the substratum via the perforations.
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