How To Figure Roof Squares

If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof.

How to figure roof squares.

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. This is simply 100 square feet of roof. 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. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

L h 2 area calculating an area of a triangle when estimating a roof. Feet then you will have 20 squares. The length l times the height h of a triangle is twice its area a2. Roof pitches in degrees.

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. Find the square footage of the roof. Because each 100 square feet of roof is one roofing square divide. For instance if the roof is 1550 square feet then it is 16 squares.

It is often compared to slope but is not exactly the same. A square simply refers to a 10 x 10 square of roofing. As an example if your overhang is 12 inches you ll add 2 feet to the overall length and 2 feet to the overall width of the house. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.

Convert the area to roofing squares. The first step in a free roofing estimate is measuring the roof dimensions. How do you calculate square footage for a roof. Roofing pitch for square roof area finally the more complex part measuring your roof s pitch.

Measure your house at ground level then add in the roof s overhang for greater accuracy. Estimate or calculate the pitch of your roof low medium or high. Multiply the length by the width to arrive at. 1 roof square 100 square feet.

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. Measure the length and width of each portion of the roof multiply length by width for each plane and then add the planes together for the total square footage. You will need to express this size in terms of square feet. 2 000 100 20.

To find the squares divide the overall roof area by 100 and then round up.