How Do I Figure Roofing Squares

You will need to express this size in terms of square feet.

How do i figure roofing squares. In the figure b. Divide the total footage by 100 to determine. 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. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.

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. 30 18 2 270 square feet. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.

How do you calculate square footage for a roof. Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments. To find the squares divide the overall roof area by 100 and then round up. Measure the ground dimensions of the house using a tape measure and write down these dimensions.

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. Because each 100 square feet of roof is one roofing square divide. How to estimate roofing materials. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.

The first step in a free roofing estimate is measuring the roof dimensions. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. 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. Multiply the length by the width to arrive at.

Multiply these numbers and then divide the answer by two. There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these. Convert the area to roofing squares. A square simply refers to a 10 x 10 square of roofing.

This is simply 100 square feet of roof. 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. Step 1 find the square footage of the roof. 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.

Above a sketched portion is a basic triangle.