How Do I Figure Roofing Squares

Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.

How do i figure roofing squares. The first step in a free roofing estimate is measuring the roof dimensions. How do you calculate square footage for a roof. Multiply these numbers and then divide the answer by two. If your roof has dormers hips or other complex elements don t forget step 2 determine the total number of squares.

While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12. To find the squares divide the overall roof area by 100 and then round up. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. 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.

A square simply refers to a 10 x 10 square of roofing. This is simply 100 square feet of roof. Divide the total footage by 100 to determine. Convert the area to roofing squares.

However shingles are packaged in a way that they are light enough for the average person to carry around. Multiply the length by the width to arrive at. There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these. 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.

Above a sketched portion is a basic triangle. As such while it can be cumbersome measuring the area and pitch of each part of the roof and multiplying by the corresponding correction factor will result in the most accurate estimate of necessary. 30 18 2 270 square feet. 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.

How to estimate roofing materials. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. 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 1 x research source if you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof. For instance if the roof is 1550 square feet then it is 16 squares.

As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. In the figure b. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. Because each 100 square feet of roof is one roofing square divide.

As we did in the first example measure the length of the eaves and the vertical line from the eaves half way point to the peak.