Formula To Find Square Footage Of A Roof

1 roof square 100 square feet.

Formula to find square footage of a roof. A gable roof and a hip roof of the same length and slope will have identical areas. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. The calculator cannot account for complex shapes based on a measurement of square footage alone. Things you will need steel tape measure.

So keeping with our roof pitch of 4 this gives us 1 9. Calculate each plane separately. If your number is 1 3 squared would yield 1 9 after that add 1 to your number. Add 1 then take the square root.

For example if your roof s pitch is 4 in 12 you would divide 4 by 12. 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. Multiply by the square. Measure the length and width of every roof plane or surface.

Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3 to 1 42 for a high pitch roof to get the square roof area. 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. Enter roof dimensions below for your roof in feet or slope as inches rise per foot if you enter only l 1 w 1 h 1 the result will be the area of a single straight gable roof. Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541.

L h 2 area calculating an area of a triangle when estimating a roof. Next square your result. 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.

1 9 1. Include dormers the small outjuttings over attic. How to calculate square feet of a roof step 1.