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Mud
Cracking: Deep, irregular cracks resembling dried mud
in dry paint film.
Possible Causes:
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 coating by scraping and sanding. Prime and repaint,
using a top quality latex paint. Mud-cracked areas can
also be repaired by sanding the surface smooth before
repainting with a top quality latex paint. This type of
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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