| 摘要 |
The improved roofing shingle has a body portion of generally flat, four-sided polygonal configuration and relatively thin in thickness. The body portion is provided with a plurality of irregular corrugations or otherwise deformed to give the roofing shingle the appearance of natural wood or other natural material such as slate. The body portion has a channel formed in the under surface so that the upper surface forms a ridge extending substantially parallel to the upper edge of the body portion. The body portion is also provided adjacent each of the opposite side or vertical edges with raised portions which are so shaped and dimensioned as to have one raised portion nest within the raised portion of a next adjacent like roofing shingle. The ridge and nested raised portions forming barriers to water infiltration between the overlapping shingles.
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