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Even a minor leak can cause rot in wood, corrosion of drywall and encourage the growth of molds. This is why a shingling job must be done correctly. The good news is, once done, asphalt shingles will last 15 to 20 years, so you won't have to do the job again for a long time. Replacing a roof is something that has to be done periodically, and is seldom done because of an obvious leak. More commonly, the shingles have dried out and become cracked, brittle and deteriorated to the point where the roof remains saturated under the roof shingles, causing slow decay rather than an obvious stick-the-bucket-under-it leak.
A brand new roof provides the opportunity for secure sealing, the latest in underlayment materials and flashing, and a longer guarantee of material integrity for a lifespan of 20 years or more. Asphalt shingles are the most commonly used roofing material in Florida mainly because they are economical and versatile, work well on all roofs, are sunlight and weather resistant, require little-to-no maintenance and are reasonably priced. In addition, asphalt shingles are also easy to cut, fasten, and fit, as well as being compatible with many different kinds of flashing and edging products. Furthermore, they don't require specialized accessories for roof edges, wall terminations, and chimney or vent flashing's.