How To Figure Square Footage For Roof Shingles

Measure the length and width of each portion of the roof multiply length by width for each plane and then add the planes together for the total square footage.

How to figure square footage for roof shingles.

A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. This means that if you are going to be using heavier shingles you will need to have more bundles to cover each square foot. 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 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. Singles are often sold in bundles with three bundles equaling one roof square. Measure your house at ground level then add in the roof s overhang for greater accuracy.

Use this information if. To properly calculate how. A square of shingles will be the amount needed to cover an area of 100 square feet. Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing.

The shingle bundles will be plastic or paper wrapped bundles that are made to be light enough for a single person to carry. The calculator cannot account for complex shapes based on a measurement of square footage alone. Finally increase the total by 15 to account for any waste. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.

Find the square footage of the roof. If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof. For tips on measuring the square footage of a building read on. 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.

Roof pitches in. 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. With the area measurement you can learn the approximate cost of a new roof. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.