If you're going to replace the shingles on your home's roof, you'll want to know how many shingles you'll need.
Instructions
1. Measure each plane of your roof, length and width. Record the length and width of each plane and then multiply these numbers together to get the square footage of each plane of your home's roof. Make sure that you measure each surface that is to be covered in shingles no matter how small; don't count on there being enough excess shingles to cover even the smallest of areas.
2. Add the square footage of each plane together to get the total square footage of your home's roof.
3. Figure out how many "squares" there are in your roof. Squares are areas of 100 square feet, so determine how many squares there are in your roof. Divide the total square footage of your home's roof by 100, and the resulting number will be the number of squares in your roof. You need that many squares worth of shingles to cover your roof.
4. Find out how the shingles that you have chosen are sold in relationship to squares. For example, if the shingles you are purchasing are sold three bundles per square, you will need the total number of squares in your roof times three bundles.
5. Add 10 percent to your total number of shingles needed to account for trim allowance. To figure out this new number, simply take the number you came up with in the previous step and multiply it by 1.1, and this will give you your final total of shingles needed.
Tags: your roof, each plane, home roof, square footage, your home, your home roof, many squares