Formula For Square Footage Of Roof

So if you divide your answer of a product of length times height by two you will get the area of a triangle.

Formula for square footage of roof.

Multiply the length and width of each square or rectangle shaped plane. 1 300 x 1 05 1 365 square feet calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. So keeping with our roof pitch of 4 this gives us 1 9. In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.

Measure the length and width of every roof plane or surface. Calculate each plane separately. The only difference in this calculation to the one for a gable roof area is the amount of the ridge. If your roof is flat or has no more than a 3 in 12 pitch you can calculate its total square footage by simply multiplying the length by the width.

The top ridge will be shorter than the one of the gable roof but the four hips will add to the ridge length. Square the result of step 1. Multiply this number by your most recent result to get the estimated square footage of your roof. The calculator cannot account for complex shapes based on a measurement of square footage alone.

The square footage of a hip roof area is identical to the square footage of a gable roof of the same size. Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3. Once you have your roof s pitch divide the number by 12. How to calculate square feet of a roof.

Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about. Multiply the number of roofing squares for a low pitch roof by 1 06 to 1 08 to get the square roof area. Include dormers the small outjuttings over attic windows. L h 2 area calculating an area of a triangle when estimating a roof.

The length l times the height h of a triangle is twice its area a2.