A roof isn’t meant to be replaced often. But knowing when it’s the right time to replace your roof can save you from roof leaks and possible water damage to the inside of your home. With that in mind, you shouldn't need a roof replacement until it's near the end of its lifespan; as long as your roof was properly installed, attic is adequately ventilated, and your roof is maintained properly.  Depending on the type of roofing material you have, it could be 10 years, 20 years, 25 years, or even longer. If you don’t work in the roofing industry, it can be hard to spot an older roof, but there are signs that it’s time for a replacement. Let’s use an asphalt roof as an example. Below are some of the signs that an asphalt roof has reached the end of its lifespan: Curling or buckling shingles Lack of granules making the shingles look bald Missing shingles Roof sagging Soft spots Blistering shingles Finding shingle granules in the gutter