I removed old paper from the wall and want to paint it new . Before doing it I guess I should sand the whole wall so that it's smoother and for that I'll use a dry-wall sander. The question is which sand paper should I use and when to stop? How smooth should the end result be?
Walls – How smooth should I sand a wall
paintsandingwalls
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Best Answer
Given that you have wet scraped as much as you can of the old wallpaper off the wall (if you haven't this is the first step), I am guessing that you are left with residue and paste and maybe a little bit of "cloth".
I suggest priming the walls with a PVA primer. After 3-4 days you can hit it with a 300 grit sandpaper. You will have a lot of spots where the paste and residue are popped out a little. Much much easier to get to these after primer. If your walls were really bad you may need a quick coat of primer again but usually you can just paint right after (sand and then wipe walls with damp cloth).