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 When Applying?
Bubbling paint can be a distressing issue when you’re in the middle of a painting project. It can be caused by a variety of factors and can have severe implications for the quality of the finished work. Painting can add value, character, and necessary maintenance in order to preserve a home’s features, but bubbling paint can work against this objective, leaving you with a mess that requires further attention. Understanding why your paint is bubbling can help you investigate and take action to rectify the problem.
At the most basic level, bubbling paint occurs when the paint is exposed to warm air or sun, causing the air and paint to expand. When this happens, air pockets form and the paint is pushed outward, leading to the dreaded bubble effect. Selecting the wrong type or quality of paint can also contribute to the problem. All too often, home renovators choose the paint based on cost, rather than the suitability to the task in hand. Cheaper paint may contain fewer binders – the substance that makes the paint stick to the surface – and this can create a low-quality finish that may bubble and peel.
Other reasons for bubbling paint include a lack of surface preparation, running the risk of moisture
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