Why Do Asphalt Shingle Roofs Develop Blisters?

Blistering is a common problem with asphalt shingles. As a homeowner, chances are you’ll come across this issue, especially if your asphalt shingle roofing system is old or in a perpetual state of disrepair. As your trusted local roofers, Empire Contractors, LLC discusses all you need to know about why asphalt shingles blister and what you can do to prevent their occurrence. The reasons why asphalt shingles blister include: Why Do Asphalt Shingle Roofs Develop Blisters?

Trapped Moisture in the Shingles

This can sometimes result from a fault in the manufacturing process, which sees moisture get trapped within the shingle itself. Even with proper installation, the shingles that have trapped moisture are highly likely to start blistering. This is because as the sun heats up the shingles the trapped moisture heats up as well, which in turn causes blisters to rise up on the shingle.

Poorly Ventilated Roofs

Roofs that do not have an adequate ventilation system in place means the shingles can get too hot over time and start to blister. That's why as part of our residential roofing services, we make sure your roofing system is properly ventilated at all times. We can check your attic and roof deck to ensure that it is not building up heat without any outlet for adequate air circulatory system in place.

Preventing Blisters From Popping

Proper installation and regular inspections are your two best options for preventing asphalt shingle blisters. Together, they can help extend the life expectancy of your roof and extend its protection against the elements. If you already have blistered shingles on your roof, however, consider these tips to help prevent them from popping.

  • Be careful not to walk on the blistered shingles as they can pop with the weight of foot traffic

  • Clear your home of falling debris from trees like pine cones, acorns, limbs or other types of debris so they don't fall on the blisters and pop them.

In addition to our residential roofing installation and repair services, Empire Contractors also handles commercial roof coatings and maintenance. Call us today at (513) 409-0880 for your roofing needs across Cincinnati, OH, and the surrounding areas.


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