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Why paint bubbles happen and how to fix it



It has happened before – an amazing color on the walls that you thought would brighten up your space instead causing heart damage when it bubbles up hours, days or even months after application. There are several reasons why this may have occurred. Identify the culprit and fix the mistake to reap the benefits of the new color upgrade.

Dirty Paint Surface

It is always part of the prep before painting, but if you chose to skip cleaning the surface of dirt or dirt, this can prevent the paint from sticking properly. Simply painting over these loose particles will cover it for a moment, eventually creating a blister around the dirty surface as the paint dries and shrinks.

Fix: Scrape and pat the area with blisters, then clean with a damp, soapy sponge, wipe with a cloth afterwards. Allow to dry completely, then apply primer and paint on areas that have been patched.

  dirty wall with bubbly paint damage

Don't skip the primer

Priming before painting can seem like another strange step, but we can assure you that it is necessary. Especially when painting directly over a porous surface such as plaster or over another painted surface. If you omit the primer, the base coating provides a much thinner adhesive film because more of it has been absorbed into the surface of the wall. Areas where the second coating does not stick to the base coating will then begin to be blown and peeled off.

Fix : Remove bubbles by scraping and patching. Clean the surface and add either a latex or oil based primer based on the type of paint to use. The primer seals the pores in the material, giving you a thicker base coat for painting. Just make sure the primer dries before adding the next coat of paint.

Oil-based coating on top of Latex paint

In general, oil-based paints are extremely durable and can be scrubbed without damaging the paint job. They make sense in high humidity rooms such as kitchens and bathrooms. When updating your scene with a little new color, don't put an oil-based coat on top of latex. It does not bind securely and will blow and bubble.

Fix: Use a putty knife to scrape off the blisters. Rinse the knife, wipe the surface and fill holes or cracks with a patch. Let it dry and set before grinding it with fine-grained sandpaper. Prime and paint.

Moisture on the surface or in the air

Moisture really makes a difference when painting, and so do plumbing problems that cause leaks or condensation on the walls. The excess moisture from insufficient bathroom ventilation or improperly ventilated kitchen hood can create water-filled bubbles in the paint, and can be common in repainting kitchens or bathrooms where there may not be good ventilation or where moisture tends to accumulate.

The Fix: Find the source of the moisture and take care of it before you begin the fixing process. Any leaks or loose plumbing fixtures will only increase your frustration when you have to keep doing it over and over. Once the problem is fixed, scrape, patch, clean and dry the surfaces you want to paint. Keep the moisture low while the color cures – so if it comes down to it, shower at a friend's house or go out to dinner rather than cook at home.

  moisture drops water on a blue painted surface

Too hot to handle

Surfaces and environments that are too hot will not be a good environment for painting. The heat can cause uneven drying caused by drying too quickly.

Fix: Remove bubbles with a scraper, then patch, clean and clean. Before applying the next color layer, take a temperature reading and make sure it is between the recommended values ​​set by the color manufacturer – usually between 50 and 85 degrees Fahrenheit. Close blinds and doors where sunlight can enter the room to prevent the temperature from rising and causing bubbles to happen again.

Wrong roller housing

A short tip length on a roller is not enough when painting a wall with a lot of structure. This can only lead to uneven coverage and blisters. Use the right length of roll to get the best coverage.

Fix : Repair with the scrap, patch, prime and sand method. Attach a color roller of the correct length so that the surface is properly formed and painted afterwards, so that each layer dries completely before the next coating is applied.

Correct color preparation saves time, money and frustrations that often come with a painting project. Do yourself a favor and prepare yourself for the job before embarking on your next painting journey.


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