| 摘要 |
<p>A pair of wall or roof elements comprises two metallic covering layers (1, 2) with a core (3) of foamed material therebetween, longitudinal edges are formed as a tongued and grooved snap connection and two resilient seals (13) are provided between the adjacent elements, the seals (13) are arranged within recesses (12) internally of the grooved element (5) and interact with prominent longitudinal portions (16) of the tongued element (7) in order to ensure a trouble-free sealing action and in order to be able to use simple sealing materials having the optimum effect. <IMAGE></p> |
