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TYPES OF ROOFING

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Composition Shingle
The most widely used roofing material is the composition shingle. Commonly known as asphalt shingles, they come in two types, differentiated by the base material. They consist of either an organic fiber mat or fiberglass core. Each type is impregnated with asphalt and coated with mineral granules to add color and texture. An adhesive back combined with nails, tacks or staples is the fastening method used. You will most likely find a "good/better/best" selection. Compare warranties (number of years the roof should last) when shopping. Shingles are available in the common 3-tab style or newer architectural designs that replicate other roofing materials such as wood or slate.

Corrugated Sheet
There are two main types:
Sheets composed of fiber and impregnated with asphalt are available in many colors (or can be painted). This sheet roofing can be installed over existing roofs of other types. This is one of the easiest roofs to install for a do-it-yourselfer.

Sheet roofing made from translucent fiberglass or PVC.

Wood
There are two types. Shingles are cut to a specific size and smooth finished. Shakes are irregular and rough-textured. Wood gives a natural look to a home. It also requires more maintenance to protect it from the elements. Wood roofing is commonly made from cedar. Fire-resistance is definitely a consideration in some areas due to local ordinances.

Metal
Metal roofs have returned from the olden days to become a popular roofing option. Once limited to low-slope structures, standing seam steel roofs can now be used on steeper roofs as well. Metal is durable, practically maintenance-free, heat reflective and nonflammable. Installed in sheets, a metal roof will actually dissipate a lightning strike rather than conduct it (a concern left over from the olden days). For real visual impact, a copper roof ages to an attractive patina.

Built-up Roofing
Built-up roofs are installed on flat or very low-sloping structures. They consist of alternating layers of felt or fiberglass treated with asphalt. These layers are topped with asphalt (tar) or aggregate. Built-up roofs are more common in commercial buildings.

Tile and Slate
These are two of the oldest roofing materials around. They are long-lasting and durable. Their weight requires a reinforced roof structure that can support them. Both can be quite expensive and neither are easy to install.