The answer is the number of roofing squares for the roof.
How to find sq footage of roof.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.
The square footage of a hip roof area is identical to the square footage of a gable roof of the same size.
Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541.
The lower slope length is measured from outside wall to the start of the upper sloped roof section.
Gambrel roof square footage calculator calculate the square footage of a gambrel style roof using imperial measurements.
Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.
Add 1 then take the square root.
Calculate the square footage area of a hip roof.
Multiply by the square footage of a single floor of your house.
Estimate the pitch of the roof.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
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.
The top ridge will be shorter than the one of the gable roof but the four hips will add.
The total amount of roofing material you need is 17 300 1 730 19 030 square feet.
The only difference in this calculation to the one for a gable roof area is the amount of the ridge.
To conclude the example if your total roofing area is 17 300 square feet your waste allowance would be 17 300 x 1 1 730 square feet.