Can you skim coat plaster over greenboard drywall?
We are finishing an attic room and have hung greenboard (moisture resistant drywall) on all the walls and ceilings. We would like to have it skim coated with plaster for a smoother finish and also avoid the laborious mud-tape-and-sand process. I heard there is a special orange-colored primer that you can apply to have the plaster adhere to the drywall, if it is non-blueboard. However, none of the DIY stores around here have heard of it or carry it. Any advice?
I have used veneer plaster over 5/8 green board, screwed to studs, over 15 years ago. Looks beautiful and fully tight. Love to hear comments. Also, this was in family rooms of house, not in bathrooms. If I had to use 1/2 blue board, I would double it up (ALWAYS insulating between walls and floors!)
Continuing previous comment... I come from family of plasterers, and nothing looks, or feel (and sounds) like plaster. My family used a scratch, and brown coats, finished with plaster. Once perforated plasterboard became popular, they would “double up” on the brown coat, then finish with the white veneer. Just beautiful, low sound transmission, Joe Cacciatore