Pattern randomization of a laminated roofing shingle

摘要

A method of producing laminated roofing shingles is provided, wherein the shingles are of a dragon's tooth type, and shingles made in accordance with the method, and packages of such shingles.

主权项

1. A plurality of laminated roofing shingles adapted to be arranged in a package that, when shingles are removed from the package and applied to a roof, the shingles will have a random pattern appearance when the plurality of shingles are installed in an array on the roof, the plurality of laminated shingles comprising:
(a) a first shingle having a dragon's tooth anterior layer of shingle material having a headlap portion and a tab portion, with the tab portion comprising a first number of tabs separated by openings between tabs wherein the sizes of the openings between tabs is in the range of 2 inches to 7 inches; (b) a second shingle having a dragon's tooth anterior layer of shingle material having a headlap portion and a tab portion, with the tab portion comprising a second number of tabs separated by openings between tabs, with the second number of tabs being a different number than the first number of tabs, wherein the sizes of the openings between tabs is in the range of 2 inches to 7 inches; and (c) with each of the first and second shingles having a posterior layer of shingle material having no spaced-apart tabs, with the posterior layer laminated to an anterior layer of one of clauses (a) and (b); and (d) with spaced apart openings being located in the anterior layer of the first shingle and having a first common spacing between center lines of adjacent openings of the first shingle and with spaced apart openings being located in the anterior layer of the second shingle and having a second common spacing between center lines of adjacent openings of the second shingle, wherein the second spacing is a different spacing than the first spacing.