To properly calculate how.
How to figure the amount of shingles for a roof.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
When figuring the amount of shingles needed to roof a house you first convert the total square footage of the roof to squares a square represents 100 square feet of area covered by shingles.
To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares.
Note that in the last 3 4 years costs of roof shingles and many accessories have gone down by an average of 18 20 currently the us national average for benchmark architectural shingles is around 74 51 square or 25 per bundle.
Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry.
Singles are often sold in bundles with three bundles equaling one roof square.
There is nothing worse than being short on shingles because you will only realize this close to the end of your project.
How to calculate the amount of roof shingles you need when you are replacing your roof you need to calculate the number of roof shingles you need.