Flat Roof Blisters: Causes and Prevention

Almost every roofing contractor will tell you that blistering is one of the worst things that can happen to your flat roof. Not only does it bring the appeal and functionality of the roofing system down, but it also allows water to infiltrate the roofing deck. This can cause further damage to the flat roof in the long run. It’s commonly caused by three things: poor installation, excess moisture on the roof, or poor ventilation. With that in mind, it’s best that you’re informed on the knowledge of how to prevent or fix such an issue.

In this post, Wood’s Roofing discusses the six ways you can prevent or fix flat roof blisters.

  1. Keep The Flat Roof Dry – One of the ways you can prevent flat roof blisters is by using dry materials in dry settings. However, your contractor may have to wait for the right weather. You can also keep your roof and its materials dry by sealing any substrate materials or storing any roofing materials inside well-sealed tarps.

  1. Proper Installation – If your roof was properly installed in the first place, then a roof repair or replacement won’t be necessary. One way you can ensure if the roof is properly installed is by installing the insulation board snugly to the substrate, clean the area of dust and allow proper ventilation for the roofing system.

  1. Inspections – Inspections and proactive maintenance can prevent roof blisters before they even begin. A professional will likely be able to spot any problems and resolve any problems that can result in flat roof blisters. With that in mind, be sure to have your flat roof inspected at least twice a year.

  1. Limit Foot Traffic – On the other hand, if blisters are already on your roof, keep the foot traffic to a minimum until an expert can resolve the issue. Walking over the blisters, especially during hot weather, can break them open and allow water and air to damage the roof further.

  1. Clean The Roof – Clean your roof and keep it dry at the same time as much as possible. This step prevents moss or algae growth in your roof, both of which can encourage flat roof blistering.

  1. Call a Professional – If your roof is now having a severe blister problem, it may be time to call a professional to rectify things. Depending on the flat roof type, a contractor will fix this in different ways. For instance, if you have a membrane roof, they’ll cut away the membrane with lost adhesion and replace it alongside any wet insulation.

Turn to Wood’s Roofing for your roofing maintenance. We are your leading provider of residential roof repair and maintenance services. Give us a call at (863) 225-0603 or fill out the contact form to request a free quote. We serve homeowners in Lakeland, Winter Haven, and other nearby areas.