According to the united states census the average roof is 17 squares or about 1 700 square feet.
House square feet for roof.
Roof pitches in degrees.
To find the squares divide the overall roof area by 100 and then round up.
When calculating roofing costs per square asphalt shingles run from 350 and 500 per square metal or tin roofs costs 600 to 1 200 per square and concrete or clay costs between 1 200 and 1 800 per square.
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.
Because each 100 square feet of roof is one.
In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.
This is simply 100 square feet of roof.
Measure your house at ground level then add in the roof s overhang for greater accuracy.
Convert the area to roofing squares.
If the house has an irregular shape measure each part separately figure the separate areas and add them together.
Roofing cost per square foot.
This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.
Roofing material is estimated by the square which is equal to 100 square feet.
The average roof is 3 000 square feet or around 30 squares.
Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive.