It is possible for a roof to naturally reach the end of its useful life without experiencing a roof failure.
It just looks old and worn, and you are doing preventive maintenance on your home.
However, if you delay replacing an old roof, it could result in more serious issues down the road. You should therefore be on the lookout for the warning signs so that you give yourself plenty of time to add the project to your to-do list. If your shingle edges are curled or if the tabs on the shingles are cupped, it may be time to replace your roof. Your roof is reaching the end of its lifespan if your shingles are cracked and there are bald spots on the roof where the granules have fallen out. When your roof is at least 20 years old, it is reaching the end of its useful life. In spite of the fact that many of today’s shingles are designed to be durable, the aging process can be accelerated by a number of factors. Having an unventilated roof, for instance, will negatively impact your shingles if you are not properly ventilating it. Homes built around the same time period can experience the same types of weather conditions and you may also find your roof is nearing the end of its useful life as well. Roof decks can become stained with dark streaks caused by airborne algae. Despite the fact that this may not necessarily harm the roof shingles, it is unlikely to look good. There is a possibility that some types of mold can grow on roof surfaces that do not receive enough sunlight, especially in cool, moist climates. Mold growth can be more than merely an aesthetic problem. Moss holds moisture against the roof surface and in freezing conditions, over time, it can lead to damage to the granules on top of the shingles. Even though you can brush off the moss, it will still grow back if you don’t take care not to damage the shingle surface. It may be in your best interest to contact a professional roofing contractor.