How To Estimate Roof Square Footage

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.

How to estimate roof square footage.

Roof area measured in sq ft number of squares. Measure the ground dimensions of the house using a tape measure and write down these dimensions. You can use the roofing calculator below to get a rough estimate of roofing costs per square foot depending on the type of roofing material. 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.

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. Roof type either gable or hip using these four inputs you will get several basic outputs. Multiply the length by the width to arrive at. If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof.

To find the squares divide the overall roof area by 100 and then round up. How to estimate roofing materials. A square simply refers to a 10 x 10 square of roofing. How to calculate square feet of a roof step 1.

Calculate each plane separately. Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments. Convert the area to roofing squares. Approximate price in dollars the estimate of a final price will depend to a large degree on the overall size of your home i e.

Include dormers the small outjuttings over attic. Roof width measured in feet roof pitch. You will need to express this size in terms of square feet. For instance if the roof is 1550 square feet then it is 16 squares.

Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. 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. Find the square footage of the roof. Costs can vary widely depending on how complex your roofing structure is type of roofing material overall slope number of chimneys sky lights taxes permits and other roof structures not listed.

Multiply by the square footage of a single floor of your house. Low average and high figures for the estimator tool. It will display 3 figures. In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.

The calculator cannot account for complex shapes based on a measurement of square footage alone. Measure the length and width of every roof plane or surface. The first step in a free roofing estimate is measuring the roof dimensions. How do you calculate square footage for a roof.