Posted on: 23 June 2020
Asphalt shingles can serve dependably on your roof for a couple of decades, but eventually you will need to consider the need for a roof replacement. Know the signs of a failing roof so you can plan to have it replaced before the roof springs a leak.
1. Granule Loss
Asphalt shingles are covered in gravel, which gives them their signature look as well as providing protection against UV light and weathering. As the shingles age, this gravel coating wears off. It will end up collecting in your gutters or on the ground beneath the eaves of your home. Certain types of weather, like hail, can speed granule loss. If large amounts of granules are lost, the shingles begin to deteriorate and the chances of a leak increase.
Shingle compression is a result of hail damage or similar trauma from a hard object falling on the roof. It can be hard to see, but it basically resembles flat shiny spots on the shingles. When shingles become compressed they are more likely to develop a crack or leak at the site of compression. Replacement of the damaged shingles is necessary.
As shingles age, moisture begins to penetrate them. The edges then begin to curl up and inward in a process referred to as cupping. Often, shingles along the edge, on the corners, or on shadier parts of the roof are affected first. Cupped shingles will eventually spring leaks. Further, the curled edges allow water to invade beneath the shingles.
Shingles can discolor for a variety of reasons. Some are harmless. For example, white stains are typically a result of minerals in the water and are only an aesthetic issue. Green or brown discoloration can be a symptom of moss or algae growth. Neither are harmful on their own, but their growth can indicate overly moist conditions that can cause the roof to degrade more quickly. Roofs can also discolor if the shingles begin to break down and absorb moisture. It's a good idea to have the roof looked at by a professional to determine if discoloration is indicative of a problem.
Once shingles begin to tear, crack, and come off the roof, it is time for a full inspection to determine the extent of the damage. In some cases, you may be able to replace a few damaged shingles and prolong the life of the roof. If the damage is widespread, though, then replacement is likely necessary.
Contact local residential roofers for information on a new roof replacement.Share