How Do You Figure Squares On A Roof

Convert the area to roofing squares.

How do you figure squares on a roof.

A square simply refers to a 10 x 10 square of roofing. How to calculate square feet of a roof step 1. Mark the center of the bottom. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.

Multiply the length and width of each square or rectangle shaped plane. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Measure the ground dimensions of the house using a tape measure and write down these dimensions. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

Measure the length of the bottom of any triangular shaped portion of the roof. Divide the total footage by 100 to find the number of squares in the roof. L h 2 area calculating an area of a triangle when estimating a roof. The length l times the height h of a triangle is twice its area a2.

Multiply the length by the width to arrive at. Measure the length and width of every roof plane or surface. Include dormers the small outjuttings over attic. Roofers measure surfaces in squares of 100 square feet 9 29 square meters.

How to figure how many squares are needed for shingles step 1. This is simply 100 square feet of roof. Find the number of squares. 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.

Calculate each plane separately. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. 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. 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.

Outside of the u s a degree angle is typically used. How do you calculate square footage for a roof. To find the squares divide the overall roof area by 100 and then round up. For instance if the roof is 1550 square feet then it is 16 squares.