Most wall cracks can be remedied by re-taping drywall joints. Sometimes, though, cracks in walls signify a larger problem.

Primers are designed to improve your paint's ability to stick to walls in old homes, in humid bathrooms ... Next, fill any holes and cracks with spackle. "Once the spackle has dried, sand the ...

Cracks, nail holes ... Use fine-grit sandpaper or a sanding block to gently go over the entire wall. Focus on areas with old ...