How To Figure Roofing Squares

Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.

How to figure roofing squares.

The first step in a free roofing estimate is measuring the roof dimensions. Before you do any roofing work you must calculate the roof s square footage to determine how much material you need. Convert the area to roofing squares. 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 calculator cannot account for complex shapes based on a measurement of square footage alone. The answer is the number of roofing squares for the roof. Then add 10 to the number to account for waste. You will need to express this size in terms of square feet.

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. Shingles and other roofing materials such as underlayment are typically measured in squares that are 10 feet long and 10 feet wide with each square measuring 100 square feet. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

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. To calculate the number of squares or bundles you need you should consider using the measurement method. To accurately calculate the area of your roof you must first determine its slope or pitch. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

This method is considered the most accurate but you will need to get onto your roof to complete it.