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. The key dimension you need to look at is the area covered per bundle. Now that you know how many bundles of shingles will be required, realize that there are other roofing material needs to consider. For Homeowners. For Pros. Contractor Network. The Owens Corning Roofing Contractor Network rewards contractors for providing homeowners with a positive experience with our products.
Roofing Programs. Our Brand Promise. When you buy Owens Corning roofing shingles, you can rest assured that our commitment to quality is of the highest importance. Find a Contractor. Search Search Button. Roofing Roofing Tools. DIY Roofing Your roof is a major structural component of your home. Add the square footage of each of the planes together.
Gable Roof with Two Roof Planes So to derive the total square footage of the roof, you would: Multiply length A times width B and length A times width C to get the square footage for each plane. Add the two planes together. A roofing square is equal to square feet of the roof. Ready to get an estimate? How many bundles of shingles per square? Here are a couple more examples: A package of shingles is called a bundle. What about the waste factor?
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. Drip-edge and fascia boards are sold by the linear foot, find the perimeter of your roof in feet to find the length of drip-edge and fascia boards needed. In addition to accurately estimating materials, it is important to make sure you order extra material when ordering.
This is more critical for materials that are special-order or have long lead times. We recommend getting free roofing estimates to understand material and labor costs and identify other project complexities that could affect the cost. There are some other factors to consider when installing a new roof. Learn about the costs of installing a new roof. Many localities require permits and inspections for roofing projects; check with your local inspections office and consult local building codes for more information on the requirements.
Also, consider that removing old materials may be a good idea and will require disposing of a large amount of waste. Moreover, during the process of the repair, some shingles and tiles might slide off. As a result, most experts recommend ordering 1 extra bundle of shingles.
The roof shingle calculator is a free estimator that serves a useful purpose during any roof repair or replacement project. Once you enter the basic roof dimensions and enter the type of roof, you will get a very accurate result telling you exactly the amount of shingles that are required to cover your new roof.
Roof Width: ft. Roof Type: Gable roof Hip Roof. Where would you like us to send this design?
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