| 摘要 |
A shingle panel includes a backing board underlying and secured to the tips of shingles laid in a row to form a course. The lengths of the shingles, extending transversely of the length of the backing board, are more than twice the width of the backing board so that the butts of the shingles overhang the backing board a distance greater than the backing board width. The panels are assembled in successive courses in substantially coplanar relationship with the backing boards in edge abutment to form continuous sheathing, and the shingles will be disposed in the overlapping relationship of a conventional roof or side wall. The exposure width of the shingles is established by the width of the backing boards. Leakage through the cracks between adjacent shingles is prevented by providing a sheet underlying a portion of the overhanging shingle length of a width at least as wide transversely of the panel length as the width of the backing board beneath it, or by arranging shingles of predetermined repetitious unequal widths in an established series in all panels and offsetting the panels in adjacent courses lengthwise to stagger the cracks between the shingles in successive courses.
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