It is often compared to slope, but is not exactly the same. Roof pitch is the measurement of a roof's vertical rise divided by its horizontal run. Although ceramic tile roofs are expensive, they can have a life span of over 100 years. Shingle roofs typically have a life span of 15-30 years, while membrane roofs usually last 5-15 years. The most common roofing materials used in the United States include shingles, membrane roofing, and ceramic tile, all of which have different life spans. ![]() ![]() Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the Roofing Material Calculator. The Area Calculator can be used to calculate the area of a variety of simple shapes that together can comprise the area of the roof. ![]() The calculator cannot account for complex shapes based on a measurement of square footage alone. In cases where a roof has a complex shape, such as in the image to the right, measuring the dimensions and areas of each part of the roof to calculate the total area will result in a more accurate measurement of area. The calculated area is only an estimation.
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