Reasons Why Asphalt Shingles Blister

Blisters on asphalt shingles can indicate roof damage and potentially lead to severe issues if not addressed promptly. Crown Roofing LTD, a leading roofing company in the area, shares information on why blistering occurs and how you can resolve it.

Asphalt Shingle Blisters

Asphalt shingle blistering happens when moisture or air trapped within the shingle heats up and expands. These blisters expose vulnerable areas of your roof to the elements, potentially causing damage.

Reasons for Blistering

There are a few reasons why your asphalt shingles might develop blisters. We list the most common ones below:

• Poor ventilation in your attic: Your attic should have at least one vent for every 150 square feet of attic space. Doing so will help to keep the air circulating and prevent heat from building up. If your attic ventilation is inadequate, the heat can cause the shingles to blister.
• Direct sunlight: Shingles exposed to direct sunlight for extended periods are more likely to blister. The sun’s rays can cause the shingles to heat up and expand. When the shingles cool down, they contract and this can cause them to crack or blister.
• Manufacturing defects: In rare cases, shingles can be defective from the factory. It can happen if there has been a problem with the manufacturing process or the handling and storage of the shingles. Defective shingles are more likely to blister than properly manufactured shingles.
• Improper installation: If your contractor didn’t install the shingles correctly, they would be more likely to blister. For example, if the shingles are not nailed down properly or if they are not overlapping the right way, they can be more vulnerable to damage from the elements.

The Importance of Professional Roofing Services

Working with a professional roofing contractor is the most effective way to prevent roof blistering. Our team at Crown Roofing LTD understands the ins and outs of roof installation, and we are committed to providing services that ensure the durability and longevity of your roof. Call us at (604) 370-6288 or visit our contact page to schedule a consultation.