How To Figure Out Sq Foot Of Roof

For instance if the roof is 1550 square feet then it is 16 squares.

How to figure out sq foot of roof. Multiply the length and width of each square or rectangle shaped plane. Outside of the u s a degree angle is typically used. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. How to calculate square feet of a roof step 1.

Because each 100 square feet of roof is one. The first step in a free roofing estimate is measuring the roof dimensions. Add a square for waste so you will need 157 bundles. 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.

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. Include dormers the small outjuttings over attic. Convert the area to roofing squares. Roofing calculator before laying down the roof pitch the space it will cover otherwise known as the roofing square needs to be measured.

If the house has an irregular shape measure each part separately figure the separate areas and add them together. Measure the length and width of every roof plane or surface. Take the square foot of 5 128 divide by 100 100 sq ft is equal to one square so you have 51 28. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.

The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. It takes 3 bundles per square so you will multiply 51 28 by 3 and you will get 153 84. Calculate each plane separately. This is simply 100 square feet of roof.

A square simply refers to a 10 x 10 square of roofing. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. However shingles are packaged in a way that they are light enough for the average person to carry around. Roofing felt is rated based on the weight of a 100 square foot section with 15 and 30 pound felt being the most common.

To find the squares divide the overall roof area by 100 and then round up. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.