| 摘要 |
<p>The invention is an insulation board adapted for anchoring roofing tiles on a pitched roof comprising an extruded or expanded alkenyl aromatic polymer or a polyurethane based foam board having a thickness of at least 40 mm; having a plurality of parallel anchoring grooves (11) adapted for receiving and anchoring cement roofing tiles, wherein the grooves have a depth of from 10 to 22 mm; and a width of from 30 to 50 mm, wherein the adjacent anchoring grooves (11) have a distance between center points which corresponds to the distance from the outside edge of the lip of the tile to the far end of the footing lip of the tile adapted for abutting the tile against the next lower row of tiles; having perpendicular to the anchoring grooves (11) a plurality of parallel ventilation grooves (11) having a depth of 15 to 22 mm, and a width of from 10 to 30 mm, wherein adjacent ventilation grooves (12) have a distance between center points which corresponds to the distance between the center points of adjacent raised portion of the roofing tiles; the board optionally has on two adjacent edges a projecting flange (13,14), and on the other two edges a flange mount (15,16); the board has a width (W) according to formula I W = (X)(M) + F (I> and a length (L) according to formula II L = (Y)(N) + Z wherein M is the distance which corresponds to the distance from the outside edge of the lip of the tile to the far edge footing lip of the tile adapted for abutting the tile against the next lower row of tiles; N is the distance which corresponds to the distance between the center points of adjacent raised portion of the roofing tiles; X is the number of anchoring grooves of the board; F is the additional width of the board due to the optional projecting flange; Y is the number of ventilation grooves; and Z is the additional length of the board due to the optional projecting flange. <IMAGE> <IMAGE></p> |
