What Causes Flat Roof Blisters?

What Causes Flat Roof Blisters?
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​If you have a flat roof, you may have experienced blistering. Blistering occurs when air and moisture become trapped under the roof surface, causing the roofing material to bubble and lift. While blistering does not always indicate a serious problem, it can be a sign of poor roof maintenance or a failure of the roofing system. In this blog, we’ll discuss what causes flat roof blisters and how to prevent them with routine roof maintenance.

Roof Blisters

Understanding Flat Roof Blister Formation

​What causes flat roof blisters?

Blisters on a flat roof are most commonly caused by trapped moisture that gets trapped between the membrane and the insulation. This can happen for a number of reasons, but is usually caused by a combination of factors such as a faulty installation, poor ventilation, or extreme weather conditions.

While blisters can happen to any type of roof, they are more common on flat roofs due to the design of the roof. Flat roofs are more prone to pooling water, which can then seep into the cracks and crevices of the roof and cause the formation of blisters.

Fixing Roof Blisters

If you have noticed blisters forming on your flat roof, it is important to address the issue as soon as possible. Left unchecked, blisters can lead to bigger problems such as leaks and water damage.

There are a few different ways to fix roof blisters, but the most common method is to simply puncture the blister and allow the trapped moisture to escape. Once the blister has been punctured, you will need to dry out the area and repair any damage that has been done to the roofing materials.

In some cases, it may be necessary to replace the entire section of roofing that has been affected by blisters. This is usually only necessary if the damage is extensive or if the blistering is recurring.

Understanding flat roof blister formation is important for preventing and repairing them. By addressing the issue early, you can avoid more serious problems down the road.

Fixing roof blisters is never a DIY endeavor, as it requires specific understanding of singly-ply roofing materials and installation techniques to correctly repair them.

It’s best to hire professional roofing contractor who can identify the cause of the blisters and fix them to prevent further damage.

Taking Action to Prevent Flat Roof Blistering

​Flat roofs are prone to blistering, and if left unchecked, can lead to serious damage. Taking action to prevent flat roof blistering is important to maintaining the integrity of your roof.

There are several things you can do to prevent flat roof blistering. First, make sure your roof is properly ventilated. Good ventilation helps to regulate temperature and prevents the formation of condensation, which can lead to blistering.

Second, keep your roof clean. Debris and dirt can hold moisture, which can lead to blistering. Regularly sweep or blow leaves and other debris off your roof.

Third, Inspect your roof regularly for signs of blistering. If you see any blisters, pop them and drain the moisture. Then, apply a sealant to the area to prevent further moisture from getting in.

Fourth, make sure your gutters are clean and in good repair. Clogged gutters can cause water to back up onto your roof, leading to blistering.

Taking these simple steps can help prevent flat roof blistering and prolong the life of your roof. 

We can help you as Cade Construction! Call us or contact us to prevent and fix flat roof blistering.