How Many Squares Of Roofing Do I Need

A roofing square is equal to 100 square feet of the roof.

How many squares of roofing do i need.

Divide the total footage by 100 to find the number of squares in the roof. However shingles are packaged in a way that they are light enough for the average person to carry around. The most common type of shingle called a three tab or strip shingle is generally packaged three bundles per square. How many rolls of felt will you need roofing felt is sold by the roll.

The average roll of 15 pound roofing felt covers about 400 ft 2 or 4 squares while the average roll of 30 pound roofing felt covers about 200 ft 2 or 2 squares. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. Roofers measure surfaces in squares of 100 square feet 9 29 square meters. The most common type of shingle called a three tab or strip shingle is generally packaged three bundles per square.

The result is 240 and this means you would need 240 squares of shingles to cover that roof. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a 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. For a new roof you will also need the same amount of underlayment.

Find the number of squares. Roof surfaces are measured in squares a square is an area of roof which measures 100 square feet. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these.

To determine the number of squares on the gable roof above simply divide its total of 24 000 square feet by 100. Singles are often sold in bundles with three bundles equaling one roof square. Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30. For a new roof you will also need the same amount of underlayment.

So in the gable roof example above. This means you would need 240 squares of shingles to cover that roof. The number of squares determines the amount of shingles needed.