Roof blistering is most common in asphalt shingle roofs and flat roof membranes; however, they can occur in almost any type of roofing system. Blisters can be caused by issues such as poor ventilation, moisture problems or improper roof installation. Roof blisters occur when the roof adhesives fail, causing bubbles that can fill up with air or water. Changing temperatures further affect these bubbles by contracting when its cold and expanding when its hot.

Roof blisters do not pose a serious problem; however, they can be unsightly and if not addressed in a timely manner, can cause further damage to your roof. This is one reason it is important to have regular inspections and perform regular maintenance for your roof.

Small roof blisters or bubbles in an isolated area are generally not serious and do not require a full replacement. If the roof blisters are a foot in diameter or larger in size, there is a possibility of exposure of the vulnerable underlayment and roof deck under the shingles. This will need to be repaired as soon as possible or possibly replaced.

Are Roof Blisters Preventable? 
Roof blisters are not preventable, as they are a symptom of an aging roof. As a roof reaches the end of its lifespan, it is likely that changes in temperature may cause blisters on the roof surface. If your roof has blisters, avoid walking on your roof as much as possible. The bubbles can pop if you step on the roof and cause further problems.

Regular Maintenance 
Hire a licensed and certified roofing contractor, like Texan Roofing Pros, to perform regular maintenance and inspections on your roof, regardless of the age of your roof. A professional inspection is the only way to recognize potential roof blistering problems and prevent further damage to your roof.

Worried about blisters on your roof? Not sure the status of your current roof? Contact Texan Roofing Pros today and let us perform a FREE inspection and estimate! We proudly serve the San Antonio, Austin and Rio Grande Valley areas.