Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.
Slope roof into sq ft.
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.
A roof with a 6 rise for every 12 run has a 6.
Get your roof size by using this roof pitch calculator.
Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.
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.
And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier.
Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118.
Roof is 6 12 pitch and measures at 2 400 square feet.
So 2400 x 1 12 2 688 2 88 sqs added for pitch.
Multiply the roof length by the gable wall length 40 24 960 multiply this amount by the slope factor 960 1 1180 1073 28 the area of this roof 1073 3 sq.
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.