A bundle of roofing shingles covers about 33 square feet. Most bundles come with three bundles per “square,” and one square equals 100 square feet. So when you buy roofing materials, you will get three bundles for every 100 square feet of roof space you need to cover. This makes it easy to figure out how many bundles you need for your roof project.
How Many Bundles Do You Need?
To find out how many bundles you need, first measure your roof size in square feet. According to the National Association of Home Builders, the average U.S. roof size is 2,647 square feet or 26.47 squares. That means most homes need about 79 bundles of shingles for a full replacement.
Divide your roof size by 33 to get the number of bundles. If your roof is 1,700 square feet, you need about 52 bundles. Always buy 10% extra for waste and mistakes.
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What Does a Bundle Weigh?
One bundle of asphalt shingles weighs between 50 and 80 pounds. A full square (three bundles) weighs 150 to 240 pounds. This matters because you need to know if your roof can hold the weight.
Metal shingles weigh much less. They are easier to carry up a ladder.
Shingle Types and Costs
According to RubyHome, asphalt shingles cost $4.25 to $4.95 per square foot for basic types, and $4.50 to $8.25 per square foot for architectural shingles. This breaks down to about $133 to $275 per bundle for materials alone.
| Shingle Type | Cost Per Sq. Ft. | Cost Per Bundle |
|---|---|---|
| Basic Asphalt | $4.25, $4.95 | $140, $163 |
| Architectural Asphalt | $4.50, $8.25 | $148, $272 |
| Metal | $8.00, $12.65 | $264, $417 |
| Cedar Shakes | $8.00, $14.30 | $264, $472 |
Why Roofs Get Replaced
Homeowners replace roofs for several reasons. According to industry data, leaking causes 33% of replacements, and storm damage causes another 33%. Twenty-five percent of homeowners replace roofs because they expect failure soon.
Asphalt shingles last about 20 to 30 years. Metal roofing lasts 40 to 80 years. Knowing your roof type helps you plan ahead.
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Talk with a local roofing contractor to review your options and get a detailed estimate for your project.