Took off old backsplash--how to prep wall for new one?
Took off the old backsplash behind the bathroom vanity and patched the hole left by an electrical outlet moved to another location. The present surface (48" long x 8" high) is drywall minus the paper covering (except for the patch over the outlet hole). What should be done to prepare the surface so we can install another backsplash? Wetness is not an issue at this particular vanity. Thanks very much for any assistance.