Formula For Square Footage Of A Roof

Multiply this number by your most recent result to get the estimated square footage of your roof.

Formula for square footage of a roof.

Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541. So if you divide your answer of a product of length times height by two you will get the area of a triangle. 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. Add 1 then take the square root.

The calculator cannot account for complex shapes based on a measurement of square footage alone. Calculate each plane separately. L h 2 area calculating an area of a triangle when estimating a roof. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.

Include dormers the small outjuttings over attic windows. 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 the number of roofing squares for a low pitch roof by 1 06 to 1 08 to get the square roof area.

So keeping with our roof pitch of 4 this gives us 1 9. How to calculate square feet of a roof. Multiply by the square. 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.

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. 1 roof square 100 square feet.