How To Figure Out Sq Foot Of Roof

Measure the length and width of every roof plane or surface.

How to figure out sq foot of roof.

Convert the area to roofing squares. This is simply 100 square feet of roof. Add a square for waste so you will need 157 bundles. The roof area for a hip end is the same as for a gable end the intersection is equivalent to a hip slightly conservative so there is usually no need to consider triangles when measuring a roof.

If the house has an irregular shape measure each part separately figure the separate areas and add them together. 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. For instance if the roof is 1550 square feet then it is 16 squares.

Multiply the length and width of each square or rectangle shaped plane. 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. 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.

Because each 100 square feet of roof is one. 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. 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 a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. Outside of the u s a degree angle is typically used. Include dormers the small outjuttings over attic. The first step in a free roofing estimate is measuring the roof dimensions.

You will need to express this size in terms of square feet. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. Take the square foot of 5 128 divide by 100 100 sq ft is equal to one square so you have 51 28. To find the squares divide the overall roof area by 100 and then round up.

A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. A square simply refers to a 10 x 10 square of roofing.