Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.
How to figure square footage of a roof.
Use this information if.
Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
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.
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.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
Calculate square footage for a roof by measuring and by performing some basic math equations.
With the area measurement you can learn the approximate cost of a new roof.
So you re thinking of reroofing the house yourself and want an estimate for how much roofing material you.
The total amount of roofing material you need is 17 300 1 730 19 030 square feet.