As I am involved with the painting industry, I can share the reasons around why paint cracking in corners of walls. A building's corners are considered stress points. Let me tell you from my experience, that the cracks may show up as the structure shifts or settles a little (due to foundation settling, temperature fluctuations, and so on). However, there can be other reasons for cracks.
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Why Does Paint Cracking on Wall Corners?
Some of the reasons why paint is cracking on wall corners are:
Water seeping through adjacent walls, roofs, or bathrooms can erode plaster and paint, causing cracking, particularly around joints and corners.
Using inferior paints with insufficient flexibility and adherence
The paint is either too thin or too thick.
Poor surface preparation, such as failing to prime or seal porous surfaces before putting a top coat
Poor adherence of the underneath coatings
So these are the probable reasons why paints crack on wall corners. The solution for this issue is to use a scraper or wire brush, remove any loose or peeling paint, then sand the surface and feather the edges. Filler will be required if the flaking is present in several paint layers. Before repainting, prime any exposed sections. Using high-quality primer and topcoat should stop the issue from happening again.
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Why Paint Cracking in Corners of Walls?
Swati90
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2025-04-14T09:49:03+00:00 2025-04-14T09:49:03+00:00Comment
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