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Why Does Paint Bubble Up?

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 Does Paint Bubble Up?

Paint bubbling up is a commonly encountered problem when painting a wall, ceiling, or another surface – and it’s essential to know how to correctly identify and address the problem before it becomes a bigger issue. Bubbling paint occurs when the moisture from a giant pocket beneath the surface causes the surface paint to swell until it forms bubbles. These bubbles may pop as quickly as they are created or remain long after the painting process has been completed.

There are several reasons why paint may bubble up. One of the most common causes is moisture seepage from the underlying structure. A flat surface may initially appear dry, but if moisture has been present beneath it for some time, you may not be able to detect it until it’s too late. When painting over a moist surface, the moisture will push against the dry paint, causing it to bubble. Other common factors that can contribute to paint bubbling are high humidity levels, inadequate preparation of the surface, using the wrong type of paint, and poor application techniques – such as applying paint too thick.

To prevent paint from bubbling up, you must first identify the source of the issue. The most common culprit is moisture, which can usually be easily dealt with

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