Although roofing projects are estimated and sold by the square, roofing material is often not sold in 1 square increments.
The average bundle of shingles covers Since transportation is a major cost factor, expect prices to vary by location. A typical bundle of shingles weighs about 75 pounds, while some premium products can weigh over pounds per bundle, so consider delivery of materials.
Roofing felt is sold by the roll. The average roll of pound roofing felt covers about ft 2 , or 4 squares, while the average roll of pound roofing felt covers about ft 2 , or 2 squares. Consider other underlayment options as needed, such as rubber or tar products. Nails will also be required for any roofing project.
The average 3-tab shingle needs four nails per shingle. High wind areas and other types of shingles may need more. Also, consider that the fascia boards may need to be replaced depending on their condition. Check out the most popular sliding windows on the market, including their specs, pricing, and more. How much does a new AC unit cost? The top 8 price factors explained. The best architectural shingles: a comprehensive guide. View all articles. Get a price for a new roof Start here.
Login Register. How to measure a roof with our roofing shingle calculator. For example, a very steep roof on a 1, square foot attic will need more shingles than a lower sloped roof on the same sized attic. Your roofer will know that steeper roofs use more shingles than lower sloped roofs, for the same house size, and there are established slope multiplier factors to make this calculation simple see Table below. Using this value and allowing for the additional roof area overhangs at the soffit, you can get a decent approximation of the roof area without going on the roof.
To use the table, simply multiply the projected horizontal area by the conversion factor for the appropriate roof slope. The result is the actual area of the roof. One such service is available through EagleView Technologies. Roofers can use these tools to save time preparing roof area estimates and can even export the information in the form of a job quote to homeowners. While this area can also be measured in metric units square meters , imperial square foot units are most commonly used and are solely referenced in this blog.
Asphalt shingles are typically packaged with this in mind, but if a package of shingles covered an entire square foot square, it would be too heavy to handle. So, most popular shingles are sold such that three bundles are needed to cover one square of roof area. But be careful — not all shingle brands are packaged three bundles to a square!
Read the label carefully, as some brands need a bit more than three bundles to cover a square. Specialty shingles, such as IKO Armourshake , are heavier and therefore packaged to cover 20 square feet per bundle, or five bundles per square. For example, if Brand A has 20 shingles in a package, but Brand B has 26, it could be that the Brand A bundle covers more area.
An important part of any roofing repair or replacement project is being able to accurately calculate the quantity of roofing materials required to finish the job. For example, you will need to figure out the exact number of shingles required to cover the entire roof area. Once you know this number, you can estimate the final price of the materials.
Thus, a key element in your project will be the roofing material calculator , and more specifically, the roof shingle calculator.
Before getting started, you should know a little about how shingles are talked about by professionals in the industry and how they are purchased at a home improvement store. One important point is that it is possible to purchase shingles both by the bundle and by the roofing square. A square of shingles is the number of shingles needed to cover sq feet of roof area.
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