Step 1: Start by prepping the walls
Photo 1: Prime the walls
Roll a fast-drying, stain-sealing drywall primer on the walls. The primer seals loose paper and promotes better adhesion of the joint compound.
With this method, you don’t just spot-prime; you roll the entire wall with a stain-blocking sealer (Photo 1). If you’ve always used solvent-based sealers like traditional BIN and KILZ, it’s time to try one of the water-based stain killers. Zinsser’s Bulls Eye 1-2-3 primer works well, and you won’t have any whining from your customers about the smell. But don’t rush on to the next step; let the sealer dry thoroughly before applying any joint compound.
These are thin layers that won’t fix holes or torn-away paper, or make uneven sections level. Patch these problems with setting-type joint compound. Let the compound harden (it doesn’t have to be dry) before you start skimcoating.
You can try find out more about
How to skim coat to get rid of textured walls.