How To Size A Roof For Shingles

Each area on the roof is a single plane which just means it s a surface with a.

How to size a roof for shingles.

First you must measure the length and width of each plane of the roof including dormers. When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails. To find the squares divide the overall roof area by 100 and then round up. Snap a horizontal chalk line over the starting row to use as a guide.

To calculate a rough estimate follow these steps. Measuring the length and width of each plane by hand 1. Below there is a simple triangle and the math used to work out. This is simply 100 square feet of roof.

To figure out your roof s area a simple geometry can be used. Required measurements include the following. Draw an overhead view of your roof. 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. If the planes aren t rectangles this may be complicated. For instance if the roof is 1550 square feet then it is 16 squares. Cut six inches off the length of the first starter shingle nailed on then use the rest of them full size.

Then each measurement is recorded on the diagram applicable to that roof surface. 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. Stow these items in a shoulder or hip pack while. A square simply refers to a 10 x 10 square of roofing.

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