My RV interior painting tips 👇 For cabinetry, a good scuff sand (or liquid sand with a deglosser) is the best way to prep cabinets. Make sure you remove all the doors and hardware. Then, prime them with a bonding primer, and finish with cabinet & trim enamel. Waiting the proper time between coats is KEY, and I like to use either a foam roller or a paint sprayer. For walls, you can usually paint right over the textured vinyl wallpaper as long as it's clean and all borders have been removed. I've