Paint blisters or bubbles occur when the paint film lifts from the underlying surface. The loss of adhesion between the paint film and surface is usually caused by heat, moisture or a combination of both. This condition eventually leads to peeling.
Why Is My Paint Bubbling?
Paint bubbling, a common problem many homeowners and decorators face, can be an eyesore and a real headache. Paint bubbling is caused when paint that is no longer firmly bonded to the wall splits and forms air pockets within the layers of paint, resulting in blisters or bubbles. Knowing the cause of bubbling paint is key to solving the problem and preventing it from occurring again in the future.
One of the most common causes of bubbling paint is using the wrong type of primer. If you use water-based paint over an oil-based primer, the water-based paint is likely to release the oil-based primer. This will cause the paint to blister or bubble as the two types of keys are incompatible. To prevent this, make sure you use a water-based primer before you apply a water-based paint topcoat.
Another cause of paint bubbling is moisture. If your walls suffer from dampness or high humidity, the paint applied will not be able to dry properly. If the underlying paint layer gets wet, it will cause the topcoat layer to bubble up. A good rule of thumb is to ensure the areas where the paint is applied are arid. If you’re ever in doubt
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