Calculating Square Footage Of A Roof

Convert the area to roofing squares.

Calculating square footage of a roof.

Multiply the length and width of each square or rectangle shaped plane. Calculate the square footage area of a hip roof. The only difference in this calculation to the one for a gable roof area is the amount of the ridge. This involves dividing the square feet by a hundred and the quotient is the roof square.

The top ridge will be shorter than the one of the gable roof but the four hips will add. Roof pitch is measured by rise run. The calculator cannot account for complex shapes based on a measurement of square footage alone. It is not always necessary to climb up the roof to calculate the roof area.

The run always remains constant at 12 inches. Include dormers the small outjuttings over attic. If this area was required to determine the quantity of roofing materials required it should be converted from square feet to square. Calculate or enter the square footage of the attic or area to be vented.

Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. This is simply 100 square feet of roof. Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. The area calculator can be used to calculate the area of a variety of simple shapes that together can comprise the area of the roof.

For instance if the roof is 1550 square feet then it is 16 squares. The distance from the top of a stud wall to the peak of the roof. The distance from the outside edge of a perimeter stud wall to the center of the house. Multiply the length by the width to arrive at.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. The sum is the total square feet of the roof. Measure the length and width of every roof plane or surface. To find the squares divide the overall roof area by 100 and then round up.

How to calculate square feet of a roof step 1. Calculate each plane separately. How do you calculate square footage for a roof. A square simply refers to a 10 x 10 square of roofing.