Square Footage Of A Roof Square

Steps to measuring roof square footage.

Square footage of a roof square.

The square footage of a roof is normally measured in squares of 100 feet. Estimate the pitch of the roof. Include dormers the small outjuttings over attic windows. Use a tape measure to note the length and width of your roof including dormers.

Find the total square footage of your roof by multiplying the width by the length and then divide that number by 100 and you will get the number of squares you need to cover. To determine the number of squares on the gable roof example in this post divide its total of 24 000 square feet by 100 24 000 100 240. The result is 240 and this means you would need 240 squares of shingles to cover that roof. Take away overhangs and of course the ratio can go as low as 1 0.

Just those two examples give you a range of from 1 3 times footprint square footage to almost 2 times for a one story house. How to calculate square feet of a roof. The calculator cannot account for complex shapes based on a measurement of square footage alone. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.

Measure the length and width of every roof plane or surface. A roofing square is equal to 100 square feet of the roof. In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area. 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 your safety use a sturdy reliable ladder and secure to your roof. The answer is the number of roofing squares for the roof. Cecil venturella march 3. Multiply the length and width of each square or rectangle shaped plane.

Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. This means you would need 240 squares of shingles to cover that roof. Each square will need three bundles of shingles to cover it. Wear shoes boots with proper traction to avoid slipping.

Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. Calculate each plane separately. Be careful walking around. A square is an area of roof which measures 100 square feet.