What causes bubbles on painted walls?
Well, the answer could be humidity, low temperatures, and moisture.
Damp areas will cause your paint to bubble as well as too cold and not properly heated rooms.
But most likely the surface was not sealed properly before painting.
If there are repairs or patches that were not primed and sealed you are most likely to run into this problem.
When should I worry about my paint bubbling?
In most cases, you will find air bubbles forming over previously spackled and patched areas.
Porous surfaces will create air pockets between the surface and paint after wet paint starts to dry and gas out.
Sometimes a dehumidifier will work.
That is if it is a damp room with high humidity.
Another case would be a too-cold room.
Here you would have to turn up the heat if possible or turn on a space heater.
How do you fix bubbles on painted walls?
You can fix bubbles in paint by simply letting the paint dry completely.
Most likely the bubbles will just air out during the curing process and disappear.
This can take anywhere from 2-4 hours depending on the temperature and humidity of the room.
How do you fix bubbles in interior walls?
If for some reason the bubbles do not go away on their own, you will have to manually remove them.
Let the paint dry for 2-4 hours then cut them out with a razor blade or utility knife.
If it is too big of a surface that is covered with bubbles then you can use a spackle knife.
Try not to cause extra damage to the walls.
The less you have to repair, the better.
If the paint starts peeling beyond the problem area just cut it with your utility knife or razor blade.
What if the bubbles on my painted walls don’t go away?
If none of the above methods work then you’ll have to wait for the paint to dry and peel the loose paint.
Next, you’ll have to either use an oil-based primer or peel-stopping primer.
Related article Everything You Need To Know About Peeling Paint