Calculating Square Footage Of A Roof

The distance from the outside edge of a perimeter stud wall to the center of the house.

Calculating square footage of a roof.

The only difference in this calculation to the one for a gable roof area is the amount of the ridge. Measure the ground dimensions of the house using a tape measure and write down these dimensions. The distance from the top of a stud wall to the peak of the roof. 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.

Because each 100 square feet of roof is one roofing square divide. The run always remains constant at 12 inches. 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. Include dormers the small outjuttings over attic.

How to calculate square feet of a roof step 1. The square footage of a hip roof area is identical to the square footage of a gable roof of the same size. A square simply refers to a 10 x 10 square of roofing. It is not always necessary to climb up the roof to calculate the roof area.

How do you calculate square footage for a roof. Calculate the square footage area of a hip roof. Multiply the length by the width to arrive at. Measure the length and width of every roof plane or surface.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. Calculate each plane separately. The top ridge will be shorter than the one of the gable roof but the four hips will add. Multiply the length and width of each square or rectangle shaped plane.

Convert the area to roofing squares. To find the squares divide the overall roof area by 100 and then round up. This involves dividing the square feet by a hundred and the quotient is the roof square. Calculate or enter the square footage of the attic or area to be vented.

The sum is the total square feet of the roof. For instance if the roof is 1550 square feet then it is 16 squares. The calculator cannot account for complex shapes based on a measurement of square footage alone. 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.