You should inspect your roof for damaged shingles at least once a year. The inspection can be done from the ground or on the roof, and inspections are best done in the spring or fall, before and after seasons with extreme weather. If you do this annually, you'll be sure to fix any current damage, and prevent problems from occurring in the future.
What should I look for?
When inspecting your roof, be sure to look for shingles that are buckling, blistering, or curling, areas where shingles are missing, and moss or rust, which can cause the roof to decay. You should also inspect your roof after an extreme event or if you notice sunlight coming through or asphalt granules in the gutter, which means the shingles are breaking down.
How long will my roof last?
Most roofs typically last at least 20 years, but the length of duration depends on the material used for the shingles and the weather conditions in your area. Be sure to winterize your home in the winter and check for ultraviolet ray damage in the summer, and you will be able to prevent any damage from occurring.