Calculate the square footage of a roof, or how many squares is your roof? A roofing square measures 10 by 10 feet, covering an area of 100 square feet.
A simple process which will not require having to take measurements on top of the roof. This method works well for gable and hip roofs and calculates the square footage of a roof. Once you know the square footage it is easy to calculate the amount of plywood, felt, shingles, or any other roofing materials needed.