| 摘要 |
<p>The rigid insulating panel acts as a support for roof-sealing material. On one of its large faces it has a central boss (3) of constant surface area, by which it is glued to the sealing material. A permanent coating of anti-adhesive material can be applied to the surface of the panel, so as to leave a central zone uncovered, and to which the boss is glued. The coating can be of sheet material with a central hole, glued permanently to the panel face, and typically made of silicon.</p> |
