Question: What is a roofing square?
Answer: By definition a roofing square is a 100 square section of roof (a 10′ x 10′ area). Roofers use a roofing square as a measurement of how much roofing material will be needed in the installation of a new roof.
In other words, just like tiling a kitchen floor is measured in square footage and subsequently number of tiles needed to fill particular dimensions, roofing squares are used to measure the size of a roofing project, which when compared to the size of the roofing shingle, will determine how much material needs to be used.
A number of companies will come in and give a bid for your roof saying it'll be X amount of squares. Then come back after the job is finished and tell you it was more.
Here at Bill West Roofing, however, we bid by the job. This way, your proposal is as accurate as possible. And you won't get any surprises in the end based off of squares of shingles.