How Do You Find The Square Footage Of A Roof

The result is the total square footage of your roof.

How do you find the square footage of a 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. You will need to express this size in terms of square feet. 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. Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3 to 1 42 for a high pitch roof to get the square roof area.

A square simply refers to a 10 x 10 square of roofing. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. Multiply by the square footage of a single floor of your house. 1 roof square 100 square feet.

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. Add the square footage for all the planes together. This is simply 100 square feet of roof. Inches enter the overhang of the gable.

L h 2 area calculating an area of a triangle when estimating a roof. Feet inches enter the overhang of the eaves. To find the squares divide the overall roof area by 100 and then round up. Things you will need steel tape measure.

Rise 12 enter the lower pitch length. 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. If for example the total square footage for the examples used so far would be 14 400 the rectangular plane plus 900 the triangle plus 2 000 the irregular shape 17 300 square feet. Feet inches enter the width of the building.

For instance if the roof is 1550 square feet then it is 16 squares. The first step in a free roofing estimate is measuring the roof dimensions. Inches enter the pitch of the upper roof rise 12 enter the pitch of the lower roof. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

The length l times the height h of a triangle is twice its area a2. 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.