They are also fire-resistant. A well-maintained composite roof can last 20 to 50 years. Slate shingles, made of stone, have the longest lifespan. They have been recorded to last up to years. Prices can be higher if you choose a unique or complex shingle. While you can install one layer of asphalt shingles on top of an existing layer, any more than that is dangerous for the structural integrity of your roof. Your contractor will have to remove shingles before placing new ones.
See what plans are available in your neighborhood. HomeServe uses cookies to recognize repeat visits and to enhance your experience on our site. By continuing to use this website you agree with our use of cookies. Calculating how many shingles you need for your roof is very similar to calculating how much carpet you need for your floors or how much wallpaper you need for your walls; simply determine the area of the roof and divide by the area covered by each package of shingles.
Sounds simple, right? The only hard part is getting the actual measurements, and there are various ways to do this. Most likely, the roofer will physically get on the roof and, using a good old-fashioned tape measure, measure the areas of all the various roof sections and total them together. Of course, if the house is a new construction, these values will be readily available from the architectural drawings. Another rule of thumb that can give you a ballpark estimate of the roof area on newly built roofs is to look at the number of sheets of plywood used for the roof deck.
Each plywood sheet is 4 x 8 feet or 32 square feet, which coincidentally is almost exactly equivalent to the coverage of one bundle of traditional three-tab shingles. Some roofs are easy shapes, like a long gable roof on a bungalow with one big rectangle at the front of the house and a similarly sized one at the back of the house.
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. Hip and ridges are covered by cap shingles, which are one square foot in size. It is possible to cut standard shingles to make these caps, or it is possible to use leftovers if they are large enough. On many occasions, for roofs that use laminate or multi-cutout, you may need to use specifically manufactured hip-and-ridge shingles. Calculating this just requires you to measure ridge and hip lengths and divide by Your email address will not be published.
Save my name, email, and website in this browser for the next time I comment. How Many Bundles in a Square? How Many Squares are in a Bundle of Shingles? How Many Shingles in a Square Once you have a three-bundle pack to cover a square, you will have 29 x 12 inches by inch standard-sized shingles per bundle.
How to Measure a Roof for Shingles The most accurate calculation of the number of shingle bundles needed is climbing up to the roof and measuring each roof plane on the roof. In some cases, for safety reasons, it may be necessary to take measurements from the ground.
Sheet-Count Method If you have sheathing, which is still exposed, this means it can be a suitable alternative to the measurement method. Leave a Comment Cancel Reply Your email address will not be published.
A square of shingles is the number of shingles needed to cover a square of roofing. Whereas a bundle of shingles can vary in square footage, a square of shingles is always square feet. This makes it easier when purchasing roofing materials since manufacturers will package 3 or 4 bundles of shingles to add to an even square. A square in roofing is always square feet. This refers to the square footage on the roof surface.
Thus, for standard 3-tab shingles, you may end up with 80 or more shingles in one square of roofing. Some older styles of 3-tab shingles will have up to 87 shingles per square. Architectural shingles will have anywhere from 57 to 66 shingles per square. The number of shingles in an architectural — or laminated — shingle bundle vary since there are many, many different varieties of these types of shingles available for purchase.
Sizes are different and therefore the number of shingles in a square differs from square to square for that type of shingle. There are 3 bundles of asphalt roof shingles per square. Some specialty styles of asphalt shingles that are larger or thicker may require 4 bundles per square, but the overwhelming majority of roof shingles are three bundles to cover square feet of roof.
One of the most common types of shingles over the past several decades, 3-tab shingles always have 3 bundles per square. These shingles are notable because they are not laminated and will have a greater amount of shingles per bundle than laminated shingles. Even though they will have more shingles per bundle, they still cover the same square footage, roughly, due to their smaller size.
The weight will also be similar to an architectural bundle since the 3-tab shingles are not laminated. Architectural shingles also nearly always come in squares made up of 3 bundles.
Some architectural shingles may require 4 bundles to achieve a square of roofing area. However, most use only 3 to make a square of the finished roof. Also known as laminated or dimensional shingles, architectural shingles are longer and a bit wider than standard 3-tab shingles.
Since they are wider and longer, there are fewer individual shingles per bundle. Even with the reduced number of shingles per bundle, they still only require 3 bundles since each shingle is somewhat larger.
Synthetic slate shingles come in bundles of However, this roofing product is highly dependent on which type you purchase since there is no uniform number between manufacturers. These shingles are individual shingles, not tabbed or laminated. They look like plates — similar to actual slate roofing. They are roughly half the length of a 3-tab shingle and the same width. There are square feet in a square of shingles.
The number of bundles required to cover a square of roofing may differ between manufacturer and type of roofing material, but a square of shingles is always square feet. There are several different methods to calculate the square footage of your roof. If you are lucky enough to have a simple roof, say a gabled roof with two identical sides or even a single sloping roof, then calculating your roof area will be a breeze.
The easiest method to figure your square footage is to estimate using the exposed roof sheathing. But if you are completely removing your old roofing or completing a new build, then this method works for you. Thus, the square footage of one piece is 32 feet squared. Count up all the sheets on all sides of your roof. Add them up.
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