Patent ID: 7971406
Filing Date: 2011-07-05
Classification: E04D,Y10T

Abstract:
1. A shingle layer having a front surface and a rear surface and comprising a bitumen-coated fiberglass web; (a) with the front surface having tab portions normally exposed when in use on a roof; (b) with the front surface having a butt portion normally unexposed when in use on a roof; (c) with the rear surface having a first zone behind said tab portions and a second zone behind said butt portion; (d) a front first layer of granules of a first size range on at least the tab portions of the front surface adhered to a first adhesive coating of the bitumen-coated fiberglass web, wherein the front first layer of granules has characteristics selected from any of the following: (e) with the rear surface of the fiberglass web having a thin second adhesive coating; (f) a layer of fine particles, separate from the first layer of granules, and of a second size range, smaller than said first size range, on the rear surface of the fiberglass web, embedded in the thin second adhesive, with the layer of line particles being comprised of any of the group of: (g) a third adhesive coating of greater thickness than the thin second adhesive coating and with a thickness range of about 0.1 to about 2 mm, disposed against said layer of fine particles, on at least a portion of the first zone of the rear surface; (h) a rear layer of granules, separate from the layer of fine particles, and that are larger than said fine particles and are of the first size range and of a greater size range than the second size range of said fine particles, embedded in said third adhesive coating and wherein the rear layer of granules is adhered to said third adhesive coating; (i) the thickness of the shingle layer between the tab portions of the front surface and the first zone of the rear surface being substantially uniform; (j) whereby the rear layer of granules provides an appearance of thickness to the shingle layer; (k) wherein each tab portion including a lower edge, with the rear layer of granules being disposed along lower edges of the tab portions to a certain height, leaving portions of the rear surface of the tab portions, above said certain height, free of rear layers of granules; and (l) wherein there are slots between the tab portions, with said slots being of greater length from said lower edge than the height of said rear layer of granules.