CSLB C-39 Roofing ContractorLow-Slope RoofingEasy
A low-slope roofing estimator is calculating material needs and refers to a single 'square' of roofing area. How many square feet does one roofing square equal?
- A1,000 square feet
- B10 square feet
- C144 square feet
- D100 square feet
Show answer & explanationAnswer & explanation
Correct answer: D. 100 square feet
In roofing trade terminology, one 'square' is a standard unit equal to 100 square feet of roof surface, used for estimating materials such as felt, membrane, and coatings.
Why the other options are wrong
- A. Too large; would drastically overestimate material quantities.
- B. Too small; not the industry-standard unit.
- C. 144 is the number of square inches in a square foot, not a roofing square.
Roofing Square
A standard unit of measurement in roofing equal to 100 square feet of roof area, used to estimate materials and labor.
- 1 square = 100 sq ft
- Used for felt, membrane, shingles, and coating estimates
- Simplifies material takeoffs and bidding
Memory trick: A square is a hundred — simple as that.