How To Size A Roof For Shingles

Lay the first row of shingles directly covering the narrow starter row.

How to size a roof for shingles.

Below there is a simple triangle and the math used to work out. Draw an overhead view of your roof. To find the squares divide the overall roof area by 100 and then round up. First you must measure the length and width of each plane of the roof including dormers.

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. Stow these items in a shoulder or hip pack while. This is simply 100 square feet of roof.

Measuring the length and width of each plane by hand 1. To calculate a rough estimate follow these steps. The more common roof thickness is 3 4 inch decking. Roofing is measured in squares.

Cut six inches off the length of the first starter shingle nailed on then use the rest of them full size. Each area on the roof is a single plane which just means it s a surface with a. If the planes aren t rectangles this may be complicated. For instance if the roof is 1550 square feet then it is 16 squares.

How to measure a roof for shingles step by step the process of accurately measuring a roof involves first making a diagram of the roof to show the basic shapes of each roof plain and how they relate to one another. Climb a ladder with a notepad a pencil and a measuring tape. Next to calculate the square footage of each rectangular plane multiply the length by the width. To figure out your roof s area a simple geometry can be used.

When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails.