According to builder Mike Guertin in a Fine Homebuilding article, a bundle of roofing shingles contains approximately 33 square feet of shingles. Shingles are sold by the bundle or the square. A square of shingles covers approximately 100 square feet.Know More
Shingle bundles are designed for one person to carry, while a square of shingles requires two or more people to carry. Bundles are wrapped in either plastic or paper. Generally, a square of shingles contains three bundles of three-tab strip shingles; however, heavier shingles may require four or more bundles to make up a square. A bundle of standard shingles contains approximately 29 standard shingles.