Plaster stains on wood

#7
Scrape it. Before oak floor is laquered or oil stained, it goes through sanding steps, that will easily remove leftover traces of plaster if any.
Water from plaster won't permanently leave a stain on oak plank, cause there is not too much water in plaster.
 

Topspread16

Well-Known Member
#12
Oxalic Acid or hydroxide peroxide ?
Don’t know, mate used it when Mrs left a cotton pad on her dressing table. I thought it was ruined, couldn’t believe it when he brought it back. It’s was dark black with a hint of red in it. Come up like new.
 
#22
A little white vinegar on a rag does great. The vinegar neutralizes the alkaline plaster and let's it break apart and come off. And once it dries you'll never know it was there.

Careful with oil on unfinished stuff, when they go to stain it you'll see those spots because it'll absorb the stain totally differently. (Assuming it'll be stained... Why else would you use oak?)
 
#23
A little white vinegar on a rag does great. The vinegar neutralizes the alkaline plaster and let's it break apart and come off. And once it dries you'll never know it was there.

Careful with oil on unfinished stuff, when they go to stain it you'll see those spots because it'll absorb the stain totally differently. (Assuming it'll be stained... Why else would you use oak?)
Polyurethane topcoat is more comon on oak than staining, i think. It can be a combination of staining and poly as well...
People like oak's warm colours, which poly brings out.
 
#25
A little white vinegar on a rag does great. The vinegar neutralizes the alkaline plaster and let's it break apart and come off. And once it dries you'll never know it was there.

Careful with oil on unfinished stuff, when they go to stain it you'll see those spots because it'll absorb the stain totally differently. (Assuming it'll be stained... Why else would you use oak?)
That’s what I was gonna say. :inocente: