Also known as R&R products, these materials have the same specifications as Number 1 Certigrade shingles, but they are machine re-trimmed for parallel edges and with smooth butts sawn at right angles where a uniform appearance is desired. They are only used for sidewall applications.
R&R shingles are manufactured from kiln dried Number 1 Grade Blue Label WRC shingles, trimmed for parallel edges with butts sawn at right angles.
8" Maximum Exposure for single course & 14" maximum exposure for double course
100% heartwood, 100% edge grain, 100% clear
1 box covers 100 square feet when installed at a 14" exposure, or 50 square feet at a 7" exposure