How To Estimate Roofing Squares

This is simply 100 square feet of roof.

How to estimate roofing squares.

The length l times the height h of a triangle is twice its area a2. 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. 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. Then add 10 to the number to account for waste.

Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments. How to estimate roofing materials. 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. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.

For instance if the roof is 1550 square feet then it is 16 squares. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. 1 roof square 100 square feet. Convert the area to roofing squares.

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 a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Outside of the u s a degree angle is typically used. The answer is the number of roofing squares for the 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. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. It is often compared to slope but is not exactly the same.