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.
How many feet is a square for roofing.
Find the total square footage of your roof by multiplying the width by the length and then divide that number by 100 and you will get the number of squares you need to cover.
This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.
Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.
Using an international foot of exactly 0 3048 meters length.
1 roofing square 9 290304 m 3.
10 feet by 10 feet 100 square feet.
The total amount of roofing material you need is 17 300 1 730 19 030 square feet.
The square footage of a roof is normally measured in squares of 100 feet.
10 feet by 10 feet 100 square feet.
1 ft x 1 ft.
100 square feet 1 roofing square 9 290304 cubic meters si unit.
Roof pitches in.
Measure your house at ground level then add in the roof s overhang for greater accuracy.
2 feet x 50 feet 100 square feet or 1 roofing square 50 feet x 50 feet 2500 square feet so 2500 100 25 roofing squares.
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.
Each square will need three bundles of shingles to cover it.
Bundles of roofing material per square.
100 square feet 1 roofing square 9 290304 cubic meters si unit.