How Many Squares Will My Roof Need

Check that your footage measurements are within this range so you can start off on the right foot.

How many squares will my roof need.

Choose one of the following products to meet the recommended intake nfva of 528 square inches. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. A square is an area of roof which measures 100 square feet. 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 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. For a new roof you will also need the same amount of underlayment. For instance if the roof is 1550 square feet then it is 16 squares.

To find the squares divide the overall roof area by 100 and then round up. This is simply 100 square feet of roof. When you are using 3 bundles for a square you will be getting 29 standard shingles in each bundle. The following product options will allow you to achieve an intake nfva of 528 square inches.

However if you are using heavier shingles you will require 4 to 5 bundles for a square. Estimate the pitch of the roof. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.

However shingles are packaged in a way that they are light enough for the average person to carry around. To determine the number of squares on the gable roof above simply divide its total of 24 000 square feet by 100. You will need to express this size in terms of square feet. To calculate the number of squares or bundles you need you should consider using the measurement method.

Allows cool dry air to enter the attic. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. 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.