MUD CRACKING:
Deep, irregular cracks resembling dried mud in dry paint film.

POSSIBLE CAUSES:
• Paint applied too thickly, usually over a porous surface.

• Paint 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 water-based paint. Mud-cracked areas can also be repaired by sanding the surface smooth before repainting with a top quality water-based paint. This type of paint is likely to prevent recurrence of mud cracking, because it is relatively more flexible than solvent-based paint, and ordinary water-based 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 minimise the tendency to apply too thick a coat of paint.

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