How To Figure Out Square Foot Of A Roof

A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.

How to figure out square foot of a roof. L 30 feet h 12 feet 30 12 2 180 square feet. With a more complex roof such is this one it is highly recommended that you make a basic sketch. However shingles are packaged in a way that they are light enough for the average person to carry around. Multiply the length by the width to arrive at the ground area of the house.

In this overhead view you see both a hip end section and gable ends. The first step in a free roofing estimate is measuring the roof dimensions. Calculate each plane separately. Include dormers the small outjuttings over attic windows.

Outside of the u s a degree angle is typically used. Measure the length and width of every roof plane or surface. 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.

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. How to calculate square feet of a roof. You will need to express this size in terms of square feet. 8 inches and you have an 8 in 12 pitch.

Pitch measurement method 1. Multiply the length and width of each square or rectangle shaped plane. This is simply 100 square feet of roof. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

It takes 3 bundles per square so you will multiply 51 28 by 3 and you will get 153 84. On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof. Add a square for waste so you will need 157 bundles. A square simply refers to a 10 x 10 square of roofing.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. To find the squares divide the overall roof area by 100 and then round up. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. If the house has an irregular shape measure each part separately figure the separate areas and add them together.

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.