Asphalt shingles typically last between ten and fifteen years,. However, asphalt shingles do get damaged and worn down by debris and weather, and all roofs need to be inspected from time to time.
Roofing problems make themselves known in the form of leaks and drips. Repair leaky roofs before ceilings and walls are damaged; better yet, check your roof at least once a year before the storm season (and after a major storm, if necessary). If your roof is leaking but you’re not sure where the leak is occurring, please see How to Find & Fix a Roof Leak.
To test an asphalt shingle roof’s condition, bend over a corner of one or two shingles on the sunniest side of the roof; if they break rather than flex, or if they appear gray and bloated, the material is nearing the end of its serviceable life.
Wear is another factor—a collection of mineral granules in gutters or at the base of downspouts indicates that the protective mineral surface of asphalt shingles is wearing away.
Also check for bald spots, cracks, or curled shingles. Small tears, cracks, and holes can be repaired, but missing or severely damaged shingles must be replaced.