| 摘要 |
<p>The invention relates to roofing that comprises two or more sandwich elements (2) that are tightly attached to each other and comprise a first sheet (4) forming an outer roof surface, a second sheet (6), and filling material (10) between the first and second sheets (4, 6). According to the invention, at least the first sheet (4) of the sandwich element (2) is furnished with water-proofing.</p> |
