Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.
Slope roof into sq ft.
As an example if your overhang is 12 inches you ll add 2 feet to the overall length and 2 feet to the overall width of the house.
Roof is 6 12 pitch and measures at 2 400 square feet.
The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.
And that s the number you were looking for.
Roof pitch is used to describe the slope or angle of the roof.
Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118.
So 2400 x 1 12 2 688 2 88 sqs added for pitch.
Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.
That gives you 5 590 square feet which is the actual area of the surface of the roof.
So continuing our example if you ve got a two story house with a total square footage of 2 700 square feet with each floor having 1 350 square feet multiply 1 350 by 1 0541 to get 1 423 square.
Flat roofs 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.
A roof with a 6 rise for every 12 run has a 6.