The most common cause of cracking in freshly applied drywall mud is when it is applied too thickly. This exacerbates the issue with evaporation-based drying and can even crack curing compounds. Past this point, applying more drywall mud will cause the cracking to worsen if done improperly.

How do you fix mud cracking?

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.

Do you sand before second coat of mud?

Should I Sand Between Coats of Drywall Mud? In most cases, you should sand between coats of mud. … After the first and second coat, just remove any bumps or lumps of mud. You don’t need to get a perfect finish at this point.