Figuring Roof Squares

Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

Figuring roof squares. Then add 10 to the number to account for waste. As a result you might need to calculate an estimate of how much it will cost to replace your old roof with a new one. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

Calculate the square footage area of a hip roof. The top ridge will be shorter than the one of the gable roof but the four hips will add. There are several factors to keep in mind for any estimate. The answer is the number of roofing squares for the roof.

Convert the area to roofing squares. To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip 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.

The materials used for the shingles or seam panels the surface area of the roof with a measurement typically in squares and any special features related to the complexity of the roof itself. 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. 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. The square footage of a hip roof area is identical to the square footage of a gable roof of the same size.

However shingles are packaged in a way that they are light enough for the average person to carry around. The calculator cannot account for complex shapes based on a measurement of square footage alone. To accurately calculate the area of your roof you must first determine its slope or pitch. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. The only difference in this calculation to the one for a gable roof area is the amount of the ridge.