How To Figure Roof Squares

How do you calculate square footage for a roof.

How to figure roof squares.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. Because each 100 square feet of roof is one roofing square divide. Feet then you will have 20 squares. A square simply refers to a 10 x 10 square of roofing.

If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof. It is often compared to slope but is not exactly the same. 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. The first step in a free roofing estimate is measuring the roof dimensions.

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. 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. If your roof is 2 000 sq. For instance if the roof is 1550 square feet then it is 16 squares.

Roof pitches in degrees. To find the squares divide the overall roof area by 100 and then round up. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch. This is simply 100 square feet of roof.

Estimate or calculate the pitch of your roof low medium or high. Multiply the length by the width to arrive at. Find the square footage of the roof. You will need to express this size in terms of square feet.

Measure your house at ground level then add in the roof s overhang for greater accuracy. L h 2 area calculating an area of a triangle when estimating a roof. 2 000 100 20. 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.

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. Convert the area to roofing squares. 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. 1 roof square 100 square feet.

Measure the ground dimensions of the house using a tape measure and write down these dimensions.