Simple gable roofs like those found on colonial or ranch homes are easy to calculate.
Simple gable roofs like those found on colonial or ranch homes are easy to calculate. Correct Answer True
Simply take the ground dimensions, multiply length times width (include overhangs) and multiply by the roof pitch multiplier. For example, a 24 x 48 home with a 6:12 roof would calculate as follows: 24 x 48 = 1,152 x 1.12 = 1,290.24, or just over 1,290 square feet of roof.