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A Guide to Repairing and Preventing Paint Bubbles on Your Walls

Paint wall

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Painting a room can be a fun and exciting way to give your home a fresh look. But if done incorrectly, you could end up with an ugly paint job full of paint bubbles. These happen when the paint needs to be adequately prepared and applied. Fortunately, you can use simple methods to prevent and fix paint bubbling on your walls.


Paint bubbling occurs when the paint becomes separated from the surface, resulting in a bumpy, bubbled appearance. It is generally caused by moisture trapped beneath the paint, either from humidity in the air or a water-based primer or sealer. This trapped moisture can cause the paint to expand, creating a blister that can be seen on the surface. Excess heat or cold can also cause paint to bubble, as can applying multiple layers of paint too quickly.

In some cases, the cause of paint bubbling may not be obvious. It could be due to the quality of the paint, an incompatibility between the primer and the color, or the application method used.

Steps to Fix Paint Bubbling

  1. Remove the Bubbled Paint: Use a scraper or putty knife to remove any bubbled paint from the surface. Scrape away the bubbled paint, leaving the surface as smooth as possible.
  2. Sand the Surface: After removing the bubbled paint, sand the area to create a smooth surface. Use medium-grit sandpaper, and be sure to sand in the same direction.
  3. Clean the Area: Vacuum the area to remove dust or debris from the sanding process. Use a damp cloth to remove any residue.
  4. Apply a Sealer: Apply an appropriate sealer to the area to ensure that the paint adheres properly.
  5. Repaint Accordingly: After the sealer has dried, you can apply a fresh coat of paint to the area. Be sure to use the same type of paint that was used for the original coat.
  6. Let Dry: Allow the paint to dry completely before using the area.

Preventive Measures

Ensure that the surface is correctly prepared before painting. This involves removing existing paint, cleaning the surface, and filling in any holes or cracks. You must also use the correct primer and paint for the surface and allow them to dry for the recommended amount of time. Doing so will help to create a smoother, more even finish that is less likely to bubble.

When painting, use the correct tools and techniques. A high-quality brush or roller for applying multiple thin coats of paint and making even strokes can all help to ensure a smooth finish. Additionally, it would help if you avoided painting in extreme temperatures, as this can cause the paint to dry too quickly, causing the paint to bubble.

Finally, if the surface is exposed to water, use a waterproof paint that is resistant to mold and mildew. These steps will help prevent paint bubbling and ensure a beautiful finish.


Treating paint bubbles requires a lot of patience and care. However, you can repair and prevent them from forming by checking for moisture in the walls, allowing the paint to dry completely before applying a second coat, and using a good quality primer and paint. By following these methods, you can ensure that your walls look smooth and perfect for years to come.

Does your home need a fresh coat of paint? We at Trusted House Painter are here to help. Request a quote from us, and we will find the best house painters in your area. Contact us now to get started!

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