The shingle is built on two full-size, one-piece shingles with random 8-inch tabs.
CertainTeed, Valley Forge, Pa., offers the Grand Manor Shangle, a heavyweight (425 pounds per square) fiberglass shingle. The shingle is built on two full-size, one-piece shingles with random 8-inch tabs, resulting in virtually five layers of coverage when applied. A patented design and extensive color palette gives the shingle the look of natural slate and the depth of wood shakes. The product comes with a lifetime-limited warranty including SureStart™ protection, algae resistance and a UL Class A fire rating.