How To Figure Roofing Squares

You will need to express this size in terms of square feet.

How to figure roofing squares.

The calculator cannot account for complex shapes based on a measurement of square footage alone. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. 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.

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. To calculate the number of squares or bundles you need you should consider using the measurement method. 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. Convert the area to roofing squares.

Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. 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. This method is considered the most accurate but you will need to get onto your roof to complete it. Before you do any roofing work you must calculate the roof s square footage to determine how much material you need.

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. Then add 10 to the number to account for waste. To accurately calculate the area of your roof you must first determine its slope or pitch. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

The first step in a free roofing estimate is measuring the roof dimensions.