How to Prevent Roof Blisters


A roof blister can appear on any type of roof system, but it is most commonly seen on flat roofs, such as membrane and built-up roofing (BUR). Often likened to a bubble on the surface of a roof, it is a raised area that has lost its adhesion and can fill up with air or water.

428424d10f65d620e5fd91050172a59a4e7b69f0 How to Prevent Roof Blisters

Achten’s Quality Roofing, a reputable business with proven expertise in roofing and gutter installation, explains how roof blisters are formed and what can be done to prevent them.

What Causes a Roof Blister?

A number of factors can cause roof blisters such as moisture, poor ventilation and poor installation. However, blisters usually start to develop from the voids built into the roof. These voids are sometimes due to trapped debris, bitumen bubbling or bitumen mopping.

In general, small voids don’t help create roof blisters; multiple large voids are typically the ones that cause problems.

How Can Roof Blisters Be Prevented?

Leaving your roof untreated can result in larger blisters, and your roof may need more extensive repairs to get back into shape. Here are a few tips to avoid blistering.

1. Ensure Proper Installation

Prevention is always better than cure. So right at the outset, make sure to hire a reliable contractor. Talk to them and be clear that your roof should be installed according to the manufacturer’s specifications. It can be difficult to ensure a perfect installation since you won’t have any control over the process. But by getting qualified professionals to do the job, you have a better chance of maintaining a durable roof.

2. Keep Your Roof Clean

Keep your entire roofing system clean. This includes all of its components such as gutters, gutter guards, shingles and others. Do not allow moss or algae to grow on your roof. 

3. Hire a Professional to Perform Regular Roof Inspections

It’s best to entrust the upkeep of your roofing to a professional. Regular maintenance and inspections will go a long way when it comes to prolonging the life span of your roof.

Achten’s Quality Roofing offers a range of services including roof replacement, gutter installation and skylight installation. Call us at (253) 539-7663 or fill out our contact form to request a free quote.