The first and easiest factor to consider is age. Regardless of shingle quality, every roof has an expiration date. On average, asphalt roofing expires about every 20 years. There are however, factors contributing to a roof’s lifespan. For example, climate and weather, insulation, and maintenance all affect how long a roof lasts before you need a new roof.
In addition to age, there are many visible signs to look for on your roof. One common thing to look for is cracks on the shingles. Cracking on shingles occurs over time. If there are cracked shingles here and there, you can replace them as a part of regular maintenance. However, if there are more than a few damaged shingles, it may be time for a new roof.
Like any other outdoor fixture of a house, weather exposure causes damage. Shingles are attached flat to the roof to provide the protective barrier from rain and sunlight. Another way to tell its time to buy new is when shingles start to curl or claw. Curling describes shingles that bend upward on the edges. When shingles claw their edges remain flat, but they bubble up in the middle. Both of these problems lead to barrier leaking. If your shingles are curling or clawing, consider replacing your roof.
Losing roofing granules raises a red flag. Granules are the texture manufacturers add to the asphalt coating. They help protect against UV rays, and also make shingles more fire resistant. Exposure to strong wind and heavy rains wear down the granules. Shingles without granules have little protection against the elements. When your roof has little to no granules left, it’s time to replace it.
Moss and Algae
Another reason home owners replace their roofs is because of moss and algae growth. While moss has no damaging affects on a roof, it creates an unsightly appearance. If you decide to replace your roof because of moss and algae, make sure to invest in algae resistant tiles.
Sagging presents a bigger problem than all of the other roof concerns on the list. Roof sagging indicates a structural issue. If your roof is sagging, you need immediate repair. It’s best to address sagging as soon as you notice it, to avoid more expensive repair down the road. Sagging means roof collapse looms in the future.
A good rule of thumb is to inspect your roof every year. With each year of rain, snow, and sun, your roof weathers the elements. A roof works as the first line of defense from all that falls on your home. Keep up with annual maintenance to prolong the lifespan of your roof. With that said, if it’s time for a new roof, make sure to invest in quality shingles with a long-term warranty.