You’ll want to use skim coating for any uneven surfaces before you paint or re-texture them. Here are a few situations where applying a skim coat is a good idea. Depending on your experience level, skim coating can be applied by hand, paint roller, or even with a spray rig, then it’s smoothed with a drywall knife or trowel. A skim coat, or a “level-five drywall finish”, is a thin coat of diluted joint compound.
Skim coating is used to improve the look of damaged and ugly walls and ceilings.
