How To Size A Roof For Shingles

Required measurements include the following.

How to size a roof for shingles.

To figure out your roof s area a simple geometry can be used. To find the squares divide the overall roof area by 100 and then round up. Measuring the length and width of each plane by hand 1. Next to calculate the square footage of each rectangular plane multiply the length by the width.

Each area on the roof is a single plane which just means it s a surface with a. This is simply 100 square feet of roof. Then each measurement is recorded on the diagram applicable to that roof surface. A square simply refers to a 10 x 10 square of roofing.

Snap a horizontal chalk line over the starting row to use as a guide. Cut six inches off the length of the first starter shingle nailed on then use the rest of them full size. When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails. Roofing is measured in squares.

The key is to be as accurate as possible since falling short or an overage could mean thousands of dollars when planning your roofing budget. For instance if the roof is 1550 square feet then it is 16 squares. Draw an overhead view of your roof. The more common roof thickness is 3 4 inch decking.

Lay the first row of shingles directly covering the narrow starter row. Below there is a simple triangle and the math used to work out. Climb a ladder with a notepad a pencil and a measuring tape. If the planes aren t rectangles this may be complicated.

To calculate a rough estimate follow these steps.