How To Estimate Roofing Squares

Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.

How to estimate roofing squares.

To find the squares divide the overall roof area by 100 and then round up. If your roof is flat or has no more than a 3 in 12 pitch you can calculate its total square footage by simply multiplying the length by the width. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. The length l times the height h of a triangle is twice its area a2. The answer is the number of roofing squares for the roof. Outside of the u s a degree angle is typically used.

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. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. A square simply refers to a 10 x 10 square of roofing. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.

1 roof square 100 square feet. This is simply 100 square feet of roof. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. How to estimate roofing materials.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. For instance if the roof is 1550 square feet then it is 16 squares. Then add 10 to the number to account for waste.