How To Size A Roof For Shingles

To calculate a rough estimate follow these steps.

How to size a roof for shingles.

If the planes aren t rectangles this may be complicated. Below there is a simple triangle and the math used to work out. 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. Next to calculate the square footage of each rectangular plane multiply the length by the width.

When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails. Lay the first row of shingles directly covering the narrow starter row. First you must measure the length and width of each plane of the roof including dormers. Each area on the roof is a single plane which just means it s a surface with a.

Snap a horizontal chalk line over the starting row to use as a guide. For instance if the roof is 1550 square feet then it is 16 squares. This is simply 100 square feet of roof. A square simply refers to a 10 x 10 square of roofing.

Measuring the length and width of each plane by hand 1. 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. Required measurements include the following. To find the squares divide the overall roof area by 100 and then round up.

Stow these items in a shoulder or hip pack while. Then each measurement is recorded on the diagram applicable to that roof surface. Cut six inches off the length of the first starter shingle nailed on then use the rest of them full size. Roofing is measured in squares.

To figure out your roof s area a simple geometry can be used.