How large is a "square" of roofing material...is it a square foot?

Public Comments

1. a square is 100 square feet
2. A square is 100 square feet.
3. 100 sq ft, or three bundles of shingles.
4. If you mean a single composite shingle, they're about 3 feet long and a foot wide. But, they are installed overlapping each other. So, the coverage area of one composite shingle is 3 feet x 6 inches.
5. a sq of roofing is 10 ft square ie 10 x 10 =100 sq feet, i just put on 9 square on my roof,
6. william got it right, give him the points. a square is an area of the roof 10' X10'= 100 sq. ft.
7. a square of roofing material is roughly 3-4'x8' pieces of plywood laid side by side.