Calculating Square Footage Of A Pitched Roof

The calculator cannot account for complex shapes based on a measurement of square footage alone.

Calculating square footage of a pitched roof.

The pitch of the roof is the rise over a 12 inch run. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. The first step in a free roofing estimate is measuring the roof dimensions. For example take an area made up of a triangle that s 20 feet high and has a base of 40 feet plus a square that s 40 feet by 40 feet.

For example a 4 12 pitch roof that is 100 square feet. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. Roof pitch area multipliers.

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. You will need to express this size in terms of square feet. 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. Things you will need steel tape measure.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. So continuing our example if you ve got a two story house with a total square footage of 2 700 square feet with each floor having. A roof with a 6 rise for every 12 run has a 6. Roof pitch is used to describe the slope or angle of the roof.

Divide any irregularly shaped areas of the roof into more manageable triangles and rectangles then calculate square footage for those individual elements and add them to get the total square footage. When painting a house installing flooring or building a home the square footage of the property is often used to determine cost or materials to be used. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. Multiply by the square footage of a single floor of your house.

100 1 054 105 4ft 2. Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3 to 1 42 for a high pitch roof to get the square roof area. Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing. Use our roof pitch calculator to find the pitch of your roof.