What Causes Bubbles in Rubber Roofs and How to Fix Them

Have you ever seen rubber roofs with bubble-like bumps on them? It’s a common issue, but it doesn’t mean it can’t be fixed. Rubber roofs, also known as EPDM roofs, are popular because they’re strong and can last a long time. However, sometimes bubbles or blisters form on the surface. Let’s find out why this happens and what you can do about it.

Why Do Bubbles Appear on Rubber Roofs?

Bubbles on rubber roofs can show up for a few reasons. One big reason is when air gets trapped between the roof deck (the base layer of your roof) and the rubber membrane itself. This can happen during installation if the rubber sheet isn’t laid out flat or if moisture gets underneath it. Heat from the sun can make these air pockets expand, forming bubbles.

Another reason for these bubbles could be moisture being trapped. If the rubber roof is installed on a damp day, or if there’s moisture in the roof deck, it can get trapped. Over time, this trapped moisture can turn into vapor, which expands and creates bubbles.

How to Fix Bubbles in Rubber Roofs

Fixing bubbles in rubber roofs is necessary to keep the roof working well and looking good. Here’s what can be done:

1. Let it Be

Small bubbles might not be a big deal. Sometimes, they don’t affect the roof’s performance and might disappear on their own. But, it’s always a good idea to keep an eye on them to make sure they don’t get bigger.

2. Repair Small Bubbles

If a bubble is small, you might be able to fix it yourself. You can cut a slit in the bubble to let out the air or moisture. Then, using a special glue made for rubber roofs, you can glue the cut edges back down. This stops the bubble from coming back and getting bigger.

3. Replace Part of the Roof

For larger bubbles, or if there are a lot of them, you might need to replace part of the roof. This means cutting out the section with bubbles and putting in a new piece of the rubber membrane. It’s usually best to have a professional do this to make sure it’s done right.

Preventing Bubbles on Rubber Roofs

To stop bubbles from forming in the first place, make sure the roof is installed correctly. The roof deck should be clean, dry, and smooth. Also, it’s important to check the roof regularly for any signs of damage or moisture. Quick action can prevent small issues from becoming bigger problems.

Dealing with bubbles in a rubber roof can seem daunting, but it’s usually manageable. Whether you fix them yourself or get help from a professional, taking care of bubbles early on can help keep your roof in good shape for years to come.