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Interior Paint Problem Solver
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Mud Cracking
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Deep, irregular cracks resembling dried mud in dry paint film.
Possible Cause:
Paint is applied too thickly, usually over a porous surface.
Paint is applied too thickly to improve inherent poor hiding (coverage) of a lower quality paint.
Paint is allowed to build up in corners upon application.
Solution:
Remove hairline or spider web cracks by sanding lightly to smooth the surface.
Prime with a quality oil or latex primer and repaint using latex wall paint. A top quality latex paint is likely to prevent recurrence of mud cracking, because it is relatively more flexible than alkyd paint, oil-based paint and ordinary latex paint. Quality paints have a higher solids content, which reduces the tendency to mud crack. They also have very good application and hiding properties, which minimize the tendency to apply too thick a coat of paint.
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