How Do I Find The Square Footage Of A Roof

It will also give you the perimeter of the shape of the roof.

How do i find the square footage of a roof. This is simply 100 square feet of roof. 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. To find the squares divide the overall roof area by 100 and then round up.

Each time you add points the area will update and there is a box below that will convert this into acres meters kilometers miles and finally 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. A square simply refers to a 10 x 10 square of roofing. Things you will need steel tape measure.

You will need to express this size in terms of square feet. 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. The length l times the height h of a triangle is twice its area a2.

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. For instance if the roof is 1550 square feet then it is 16 squares. So if you divide your answer of a product of length times height by two you will get the area of a triangle. 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 lower slope length is measured from outside wall to the start of the upper sloped roof section. 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. 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. After you ve done this you can click along the outer edge of the roof that you wish to calculate the area for.

The calculator cannot account for complex shapes based on a measurement of square footage alone. Cecil venturella march 3. L h 2 area calculating an area of a triangle when estimating a roof.