Your roof is a system comprised of a series of parts that all work together to provide your home with excellent protection from the elements. Choosing the right type of roofing material is important, and a lot of homeowners spend a lot of time making this decision. But don’t neglect the other parts that make up the rest of the system. During an installation, roofing specialists will not just attach the asphalt shingles onto the roof deck. They are often held in place by a layer called the underlayment that provides additional protection against water penetration.
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