Asphalt shingles are perhaps the most common material used to cover the modern roof, and it is for good reason. With a lifespan of as long as 20 years, asphalt-shingled roofs definitely provide a long life for the money spent. However, when the asphalt shingles start to reach the end of their lifespan, things can turn ugly really quick. You may be left with leaks or even a roof that is just not an attractive quality of your home. You can catch an asphalt shingle roof just in time for replacement if you know the signs to look for that indicate the material is starting to fail.
You are starting to see missing shingles on your roof.
When the asphalt shingles start to break down, they will more easily break away from their fasteners. This means that during high winds or even mild winds, shingles may break completely loose and come down. If you spot a few missing shingles here and there, it could definitely be a sign that your are in need of a roof replacement. The best way to test this hypothesis is to climb up on the roof and take a look at the condition of the shingles. Try to pull up a shingle and see how easily it breaks free. If it comes off without any effort, it is time to call up a roofing contractor.
Roofing granules are filling your gutters.
Asphalt shingles come straight from the manufacturer with a heavy layer of sandy granules attached to the surface with a durable adhesive that should last several years. When the shingles start to get a lot of age on them, the adhesive that holds these granules in place will break down, allowing the granules to work free. You will see signs of this mainly in your gutters, but you may also spot piles of granules around the perimeter of the house.
The shingles on the roof are buckled, giving the roof a wavy appearance.
There will come a point in the life of an asphalt shingle when it will become more susceptible to the elements. Moisture and high heat will cause the shingles to bow out or even curl up around the edges. If you are looking at your roof from the ground, you may notice that your roof is starting to get an uneven or wavy appearance because of this problem. So if your roof is looking out of shape, it is best to start thinking about a new roof.