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Why Do Asphalt Shingle Roofs Blister?

Asphalt shingles remain the most popular roofing choice in North American homes. The reason for their popularity is simple: they boast performance comparable to other high-end roofing materials and a high availability at a reasonable cost. However, for all its benefits, it is not without its flaws. Asphalt shingles can be prone to a number of problems that can affect both their curb appeal and their ability to protect your home against the elements. 

 Shingle Roofs Blister

One common problem most homeowners notice about asphalt shingles is blistering. When left alone, blistering shingles do not pose any immediate dangers for your roofing system. However, they can be a sign of something more serious happening underneath. Let our experts at Century Roofing and Siding Ltd. explain blistering and offer you tips to resolve or prevent this problem.

What Causes Blisters?

If an inexperienced roofing contractor installs your asphalt shingles improperly, it could lead to a number of problems. One such problem has to do with roofing’s number one enemy: moisture. Moisture expands when it evaporates. If this happens while moisture is trapped under the shingles, blisters can occur. High humidity in the attic with no proper ventilation can also lead to moisture problems in your roof.

Are Blisters a Cause for Concern?

For the most part, minor blisters that do not cause any loss of granulation are not serious enough to be a problem. However, when blisters are occurring on too many shingles and causing them to lose their granules, it could lead to bigger issues. Contact your roofing contractor for an inspection as soon as you see signs of asphalt granules around your property.

How to Avoid Blisters

You can avoid a lot of expensive roof repair visits by ventilating your attic adequately. Talk to your roofer about installing enough soffit and ridge vents to allow hot and humid air to escape your roof, lessening its exposure to moisture and other moisture-related problems.

Keep your asphalt shingle roof safe and blister-free with the help of our professionals at Century Roofing and Siding Ltd. Give us a call at (613) 738-1774 or fill out our contact form to schedule a repair or request a free estimate today. We serve homeowners in Nepean and other nearby areas in ON.