Finally increase the total by 15 to account for any waste.
How to figure square footage for roof shingles.
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.
If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof.
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.
The area calculator can be used to calculate the area of a variety of simple shapes that together can comprise the area of the roof.
However shingles are packaged in a way that they are light enough for the average person to carry around.
Find the square footage of the roof.
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.
A square of shingles will be the amount needed to cover an area of 100 square feet.
This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
Then multiply that number by 3 to figure out how many shingle bundles that amounts to since shingles typically come in a bundle that s large enough to cover 1 3 of a square.
The shingle bundles will be plastic or paper wrapped bundles that are made to be light enough for a single person to carry.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
Calculate square footage for a roof by measuring and by performing some basic math equations.
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.
A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.
Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing.
Measure your house at ground level then add in the roof s overhang for greater accuracy.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
Use this information if.
Roof pitches in.
To properly calculate how.
With the area measurement you can learn the approximate cost of a new roof.
For tips on measuring the square footage of a building read on.
