| 摘要 |
<p>A roofing shingle is disclosed comprising a headlap portion with a nonstraight longitudinal edge defining headlap peaks and headlap valleys and a buttlap portion with a plurality of tabs extending from the headlap portion spaced apart by openings and a non-straight longitudinal edge defining buttlap peaks and buttlap valleys, wherein the nonstraight longitudinal edges do not shadow each other laterally across the shingle. Also disclosed is a roofing system comprising a plurality of courses of the shingle, wherein at least a portion of the headlap portion of the shingle from a subsequently installed course of shingles overlaps at least a portion of the headlap portion of a shingle from a previously installed course of shingles defining a headlap overlap region. The maximum headlap overlap dimension is beneath the headlap portion of a subsequently installed shingle laterally proximate the openings in the buttlap portion of the subsequently installed shingle.</p> |
