| 摘要 |
<p>A shingle (31) is formed with one side edge (18) folded over the top surface (4) of the shingle (31) to catch and direct water down the shingle to the top surface (4) of the next lower shingle. An S-shaped fold (15) in the surface of the shingle receives the unfolded leading edge (20) of an adjacent shingle to form a gutter (16) under the leading side edge of the adjacent shingle. The top edge (2) of the shingle (31) is folded-over towards the top surface (4) of the shingle for engagement with the folded-under lower edge (12) of the next higher shingle on the roof and extends to the right edge (26) of the shingle and slides under the left edge (28) of the folded-over top edge (2) of the next adjacent shingle. The folded-under lower edge (12) extends along the lower edge of the shingle leaving a gap (39) relative to the folded-under lower edge of the next adjacent side shingle to prevent water from migrating over the top edge (2) of the shingle (31). One or more S-shaped folds (30) are formed in the middle of the shingle to define a multiple shingle panel.</p> |
