If you’ve recently completed a paint job and noticed bubbles forming on your walls or ceilings, you’re not alone. Many homeowners ask, “Why is my paint bubbling?” Understanding the causes behind bubbling paint and how to fix paint bubbles can save you time, money, and frustration.
What causes paint bubbling?
The vast majority of bubbling paint issues stem from poor adhesion between the paint film and the underlying surface. When paint loses adhesion and lifts away in bubbles, the most common causes are moisture, dirt, or extreme heat. Moisture is particularly problematic, whether it’s penetrating damp from outside or water ingress due to faulty plumbing. Humid conditions, especially in rooms like kitchens and bathrooms, also contribute to bubbles forming as the paint dries.
In some cases, paint bubbling may occur if paint is applied to a surface that’s not properly prepared. Dirt, grease, or flaking paint left on the surface can stop the new paint from bonding correctly. Likewise, painting over a glossy or sealed surface without proper sanding or primer can cause issues. Even using incompatible products like an oil-based paint over latex without priming can lead to blisters.
Top tips to prevent paint bubbling
Preventing bubbling paint starts with proper preparation. Always clean the surface thoroughly before painting, using a sponge and mild detergent to remove grease or dirt. Allow the surface to dry completely. Sand glossy surfaces with fine-grit sandpaper to help the new paint adhere, and wear a dust mask while sanding to protect yourself. If moisture is a concern, identify and fix the source first, whether it’s roof leaks, condensation, or damp patches in the wall.
Applying paint in the right conditions is also key. Avoid painting in high humidity or during a heatwave, and always ensure that previous coats have had enough time to dry before applying the next. Use a high-quality primer, especially when painting over bare wood, metal, or previously painted surfaces.
Can I fix the bubbling paint myself?
Yes, in some cases, you can fix paint bubbles yourself. The first thing to do is gently scrape away the bubbled area with a putty knife. Once the bubbling paint is removed, lightly sand the area smooth and clean it with a damp cloth. Allow it to dry completely before applying primer and a new coat of paint. This process works well for small, isolated bubbles caused by dirt or poor surface prep.
However, if the bubbles are widespread or caused by moisture issues, it might be time to call a professional. Repeated bubbling could indicate a deeper issue like water ingress or penetrating dampness, which requires proper diagnosis and remediation. Simply painting over it won’t solve the problem; you’ll likely see the same issue return after a short time.
The Right Tools Make All the Difference
When dealing with bubbling paint, having the right tools on hand can make the job significantly easier and more effective. One standout option is the Harris Trade 6-in-1 Painter’s Tool, available from Wickes. Designed to help you gently scrape away loose or bubbling paint without damaging the surrounding wall or ceiling, this multi-use tool also acts as a putty knife, glazing tool, and more.
Its versatility makes it ideal for DIYers and professionals alike, especially when trying to create a smooth finish before reapplying primer and paint. Using the right tools helps prevent paint bubbles from returning by ensuring your surface is properly prepared, saving time, effort, and money in the long run.
When should I call a professional?
Calling a professional decorator is the best course of action if you’re unsure about the cause of the bubbling or if previous attempts to fix it have failed. An experienced person will assess the surface and identify whether it’s a case of poor adhesion, humidity, or structural dampness. They have the tools and knowledge to properly treat the underlying surface and create a smooth finish that lasts.
At LGC Decorators, we understand the frustration of seeing a freshly painted wall blister or bubble. Our award-winning team is trained to deal with all types of surfaces, ensuring a durable and high-quality result every time. We focus on attention to detail and professionalism, taking the time to prepare surfaces correctly and use the right products for each project.
Not all paint problems require calling in a company, but when the job is large, involves damp, or impacts your entire home, investing in professional help is worth it. It prevents costly mistakes and ensures the paint job adds value to your house.
Final thoughts: why preparation matters
The difference between a lasting paint job and one plagued by bubbles often lies in preparation. While it’s tempting to rush through the process, giving enough time for each coat to dry and ensuring the surface is sound is essential to success. With the right knowledge and materials, you can prevent paint bubbling and enjoy beautiful, smooth walls for years to come.
If you’re dealing with persistent bubbles or need help with a new painting project, our team at LGC Decorators is here to help. Get in touch today to discuss your needs and find out how we can bring your space to life.
