For small areas, I use drywall compund. For larger areas, I use gauging plaster. Something like Gold Bond Super White. That assumes that the brown coat is intact. If not you need to put that down first and allow about an 1/8" for your finish coat. Plasterers are a dying breed. Finding real plaster can be a challenge sometimes. Since plaster for the past 70 years or more has been gypsum based, they haven't been shaving horses, so your hay burner is safe. :wink:
Patching old horsehair plaster
I am restoring an old 1850s home and am saving some of the plaster walls that are plastered directly on my 18" thick brick walls. What should I use? Plaster of Paris and then sand it down? I don't know what the best product would be. I won't shave my horses and do it the way they used to 
ha. Please provide your suggestions especially if you have had experience! Thanks
ha. Please provide your suggestions especially if you have had experience! Thanks
