| 摘要 |
A roof (1) comprises rafters (2), a vapour impervious membrane (11), insulation material (3), between the rafters and a flexible roof sheeting (6). According to the invention the vapour membrane is trained over the exterior faces of the rafters and downwards along parts of the rafter lateral faces and across the rafter interspace, the vapour membrane being adapted for temporarily providing structural support for the insulation material. The invention provides a method for the installation of a vapour membrane, a method for providing a roof structure, a double sheet, an insulation element, and a roof. |
