How Many Plywood Is A Square Roof Shingles

To find the squares divide the overall roof area by 100 and then round up.

How many plywood is a square roof shingles. Roofing contractors estimate projects and materials by the square so it is crucial to find this measurement to accurately estimate the amount of material needed. How many shingles in a square once you have a three bundle pack to cover a square you will have 29 x 12 inches by 36 inch standard sized shingles per bundle. A square simply refers to a 10 x 10 square of roofing. Roof surfaces are measured in squares a square is an area of roof which measures 100 square feet.

This is simply 100 square feet of roof. The square footage of a hip roof area is identical to the square footage of a gable roof of the same measurements. A 4 8 sheet of plywood is 32 ft 2. The result is 240 and this means you would need 240 squares of shingles to cover that roof.

This basically calculates the number of sheets needed for a gable roof. There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these. Each plywood sheet is 4 x 8 feet or 32 square feet which coincidentally is almost exactly equivalent to the coverage of one bundle of traditional three tab shingles. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.

If it s a re roof project and you have access to the original paperwork from the last shingle installation that may be useful in showing the roof area. 1 500 32 46 875 sheets. Another rule of thumb that can give you a ballpark estimate of the roof area on newly built roofs is to look at the number of sheets of plywood used for the roof deck. Shingles are packaged in bundles that include a number of strips of roofing.

So dividing the area of the roof by 32 will give you the number of sheets needed. The calculation is based on that the plywood or osb oriented strand board sheets are of a 4 x 8 size. Twenty seven strips equal a bundle generally speaking and roughly three to four compose a square. Divide the total roof area by 32 to get the number of sheets you will need to cover the roof.

With that as background you are now ready to estimate how many shingles you will purchase for your roof project. The hardest part is how you determine the number of bundles it requires you to order to cover all your roof areas. To determine the number of squares on the gable roof above simply divide its total of 24 000 square feet by 100.