Formula For Square Footage Of Roof

Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3.

Formula for square footage of roof.

1 roof square 100 square feet. Multiply the number of roofing squares for a low pitch roof by 1 06 to 1 08 to get the square roof area. Calculate each plane separately. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.

Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about. How to calculate square feet of a roof. So if you divide your answer of a product of length times height by two you will get the area of a triangle. Multiply the length and width of each square or rectangle shaped plane.

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. Add 1 then take the square root. L h 2 area calculating an area of a triangle when estimating a roof. 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.

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. The length l times the height h of a triangle is twice its area a2. 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. Square the result of step 1. The square footage of a hip roof area is identical to the square footage of a gable roof of the same size. So keeping with our roof pitch of 4 this gives us 1 9.

The top ridge will be shorter than the one of the gable roof but the four hips will add to the ridge length.