How do I repair old plaster?
I have a wall in my 1921 era house that was water damaged. It is plaster lathe. The paint pealed off in one section. I scaped it down and then used joint compound tp level it off, after it had dried. The compound just turns to dust and does not stick. Is the problem wirh the compound, the plaster or what? Is there something I should put over the plaster to make the compound stick?
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It should stick. Was your joint compound old or has it been frozen in storage? Here are some tips https://www.ehow.com/info_8416043_can-compound-used-plaster-walls.html
Dorothy, this is interesting. I've always thought that joint compound would do the trick on Plaster and a quick Google search says so too. I'm wondering.... Did you happen to use spackle instead of joint compound? A good all purpose compound, sand or scrape the plaster first to smooth it a little, and allow to dry a full 24 hrs should do it.