May 6, 2021

Asphalt Shingle Roofing Problems

Asphalt shingle roofing—like all roofing materials—carry beneficial characteristics and unique problems. Nobody is expecting the consumer to be a roofing expert. That’s why professionals like ourselves are available to provide customer education about roofing materials!Shingles are the leading roofing materials installed on homes, so we believe customers should become familiar with their common problems. If customers can spot an issue with their shingles immediately when it occurs, they can call a professional before the situation worsens. Educating yourself on these common problems can save you hundreds of dollars down the line! Some of these problems are due to exterior wear and tear, and others result from the roof’s natural aging process.Here are some problems homeowners may run into with a shingled roof.


Blistering is often an issue related to hot weather exposure over the summer months. Asphalt shingles are comprised of three different layers. On the bottom is the fiberglass backing. Next, there is a coat of asphalt. Last, there is a coat of granules on top. All of these layers together create the asphalt shingle. Blistering can occur from a manufacturing error or an improper installation. Moisture can become trapped between the three layers during the manufacturing process. The heat will then cause the moisture to expand. This expansion will physically cause the shingle to bubble and blister. If a roof begins to blister and pop, that section of the roof is now exposed to the elements. This will overall age the roof unevenly, causing a premature roof replacement.


Take a look at your roof from the ground level. If you notice edges lifting upward, you have curling shingles. Curling is normal for shingles if they’re approaching the end of their lifespan. This could also be a sign of poor ventilation and trapped moisture. Curling is caused by theaftermath of thermal shock. Thermal shock occurs when the surface of the rooftop is hot, and then it dramatically cools in a short period of time. Curling shingles can lead to leaks over time, so it’s crucial to get them repaired as soon as possible.


Cracking is another common problem with asphalt shingles derived from the natural aging process of the roof. Cracking of the shingles will eventually lead to splitting and tearing. It begins on the top layer granule layer. The crack gradually makes its way through the asphalt layer and then to the fiberglass backing. If you notice cracking on your shingles, it may be time for a roof repair or replacement!

Granule loss

The granules on the top of the shingles are intended to protect the other layers. Have you ever cleaned your gutters and noticed bits and pieces of granule that resembleyour shingles? This could be a sign of granule loss. Granule loss—at an acceptable rate—is a normal part of the roof’s aging process. However, premature granule loss can lead to early failure of your roof. Granule loss could be a manufacturing issue. If the asphalt layer of the shingle isn’t disturbed evenly, the granule may not be able to adhere to the surface. This causes the granules to flake off in patches. Like other roofing issues, granule loss can be a ventilation and overheating problem as well.

Mold and mildew

Mold and mildew are asphalt shingle roofing problems that could be cosmetic; however, they could eventually lead to something bigger. Think of where mold grows. Mold and mildew will grow where there is excess moisture. If moisture is trapped in the underlayment, this could pinpoint where the mold and mildew are coming from. If the mold and mildew makes its way through the shingles and to the base layer of your roof—this could become a costly fix! Asphalt shingle roofing is attached to an underlayment placed on top of oriented standard board or plywood. Mold and mildew will rot the decking of your roof.

Common problems with asphalt shingle roofing

Asphalt shingle roofing has its problems, but it’s not the worst roofing system created. Asphalt shingle roofing is affordable and easily accessible to everyone. The lifespan of a shingle roof is around 20 years give or take. Homeowners need to become aware of common problems with asphalt shingles, so they extend the lifespan of the roof to its full potential.