Roofing shingles with reduced usage of conventional shingle material having side lap extension

摘要

A roofing shingle includes a shingle body having a buttlap portion with a butt edge and a headlap portion with a head edge. The shingle body also has a first side edge, a second side edge, and an exposure zone extending from the butt edge toward the headlap portion that is configured to be exposed to the environment when the shingle is installed on a roof. A water impermeable sheet is attached to the shingle body. The sheet has a width, length, first end and second end. The width extends from approximately the head edge to approximately the butt edge of the shingle body. The length extends from the first end to the second end. At least a portion of the length extends beyond the first side edge of the shingle body by at least about 2 inches. The sheet is formed from a different material than the shingle body.

主权项

1. A roofing shingle, comprising:
a shingle body comprising a buttlap portion with a butt edge and a headlap portion with a head edge, a first side edge and a second side edge, an exposure zone extends from the butt edge toward the headlap portion that is configured to be exposed to the environment when the shingle is installed on a roof; and a water impermeable sheet (WIS) attached to the shingle body, the WIS having a width, length, first end and second end, the width extends from approximately the head edge to approximately the butt edge of the shingle body, the length extends from the first end to the second end, at least a portion of the length extends beyond the first side edge of the shingle body by at least about 2 inches, such that the WIS only extends beyond the shingle body in a length direction and does not extend beyond the head edge of the shingle body, such that the WIS is only a sidelap and is not a headlap, and the WIS is formed from a different material than the shingle body.