Patent ID: 9540817
Date: 2017-01-10
CPC Classifications: E04D,Y10S,Y10T

Claim:
1. An asphalt roofing starter shingle, adapted to be laid up in a valley area of a roof, comprising: a headlap portion, vertically spaced apart upper and lower edges, laterally spaced apart right and left edges and top and bottom surfaces; wherein said bottom surface is configured to be laid up on a roof facing the roof; said headlap portion comprising a first plurality of markings substantially contained within said headlap portion, which are designed to be concealed following installation, said markings comprising a plurality of parallel, evenly laterally spaced, markings separated by a desired shingle reveal and angled, relative to said upper and lower edges of said shingle, at an angle substantially identical to a pitch of a roof adjacent an edge of a valley in which the shingle is designed to be installed; and wherein said first plurality of markings are useful, at least, for aligning adjacent shingles, forming a grid of shingles without external measuring devices and extending the alignment thereof through a valley region of a roof.