by Nimbus Couzin » Mon Jul 26, 2010 10:01 am
One could hang drywall over the existing walls. That is commonly done. But I wouldn't do it. The main negative is that you literally lose some of your room (volume). Every inch counts when you're living and trying to put furniture in place, etc. Also, when you hang new drywall, you still need to tape, mud, sand, skim, etc.....in short, you still need a good drywall guy(s)...plus, add the material cost, and the time to hang.
Without seeing the current surface it is tough to judge, but if it really is quite smooth, like an orange, then a skim coat would be very quick and easy for someone who is any good. Perhaps just one coat, sand and that is it. But possibly a second coat and sanding, depending on how perfect you want it.
I cannot overemphasize how crucial it is to get someone who is good at it though. They can do it literally five times faster than someone less experienced. (and probably do a better job too) Unfortunately, I've lost contact with one guy who I knew who was real good at it, and a second guy quit doing it to go into woodworking full time. The job woud go very quickly for a competent drywall finisher...no taping and seams makes the job much much faster (thick mud takes longer to dry).
I'd say a skim coat is the way to go. Oh, and yes, by all means try to do it before moving in. You will have dust aplenty during sanding. Still, you can isolate rooms with plastic sheeting if necessary.
good luck
Dr. Nimbus Couzin