How To Figure Roofing Squares

A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

How to figure roofing squares.

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. 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.

Convert the area to roofing squares. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. 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. 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.

Then add 10 to the number to account for waste. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. To calculate the number of squares or bundles you need you should consider using the measurement method.

This method is considered the most accurate but you will need to get onto your roof to complete it. The first step in a free roofing estimate is measuring the roof dimensions. 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. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure.

The answer is the number of roofing squares for the roof.