Calculating Square Footage Of Sloped Roof

Straight to the answer divide your roof pitch by 12.

Calculating square footage of sloped roof.

The calculator cannot account for complex shapes based on a measurement of square footage alone. Once you have your roof s pitch divide the number by 12. The result is the area covered by the sloping roof. A square simply refers to a 10 x 10 square of roofing.

This is simply 100 square feet of roof. If the same house had a central roof ridge dividing the roof into two sloping areas each would cover 300 square feet or half the house. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. To find the squares divide the overall roof area by 100 and then round up.

Add 1 then take the square root. 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. 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. For instance if the roof is 1550 square feet then it is 16 squares.

When calculating square footage for your roof always add at least 10 percent of the total to account for waste. Roof pitch calculator roof slope calculator the roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. Adding 1 gives us 1 1 9 10 9. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.

Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing. For example a single sloping roof covering a house 30 feet long and 20 feet wide covers an area of 600 square feet 30 x 20 600. The area calculator can be used to calculate the area of a variety of simple shapes that together can comprise the area of the roof. Shingles and other roofing materials such as underlayment are typically measured in squares that are 10 feet long and 10 feet wide with each square measuring 100 square feet.

If your number is 1 3. So keeping with our roof pitch of 4 this gives us 1 9. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. For example if your roof s pitch is 4 in 12 you would.

Roof pitch is given as the number of inches in height change over the distance of one foot. Next square your result. Square the result of step 1. The answer is the number of roofing squares for the roof.