Can Kilz 3 over new drywall be sanded?
Unfortunately, I hired a contractor who wasn't proficient. In short, rather than doing the final mudding and sanding on my new drywall properly, he totally messed it up and then to make it worse, he sprayed over all his obvious mistakes with Kilz 3! I have about 25-30 sheets of 4x12 drywall that I'd like to save if possible. Right now, when I look down it, it looks like a patchwork quilt of varying smoothness and textures. I don't want to have to demolish it and start over if possible. We wanted smooth walls and ceiling, but one option is to sand some and then do some sort of knockdown textured finish (we find that sort of yucky though), to cover most of the mistakes. I have purchased (arrived today) a 9" circular powered sander with vacuum hose (haven't tried it yet) but was wondering it the Kilz will ever get 'hard' so it would sand to a 'powder'. I don't care if I damage the mud underneath because all the walls or going to need to be skim coating anyway to get the smoothness I want. I'm open to all thoughts, but sure dread the thought of tearing out the walls (I can save the ceiling) and carrying it all out the basement and across the back year to a dumpster sitting on end of driveway. Oh, and I'm 71 too! Thanks in advance.