On May 24, 12:39 pm, "dadiOH" wrote:
Klein-4 wrote:
On May 24, 11:11 am, "EXT" wrote:
A mild acid may release the remaining plaster. Are you sure it is
plaster and not drywall compound? If it is drywall compound you
may just need more scrubbing, I don't think the acid will help
much. Whatever it is, you will have to repaint the floor, as all
the scrubbing will have changed the texture and any materials in
the pores of the concrete may never come out.

"Klein-4" wrote in message

roups.com...

Hoping someone can help. Just had two bedrooms built in my
basement. Outside of the rooms there is an area about 16 square
feet. The contractor was not careful and plaster stained the
painted basement floor in this area. One of the builder's
employees scrubbed on it for a long time with Krud Krutter, Easy
Bam etc..., but there are still essentially flat stains all over
this area. Is there some kind of solvent or cleaner that will
allow me to remove these stains? Thanks.

RL- Hide quoted text -

- Show quoted text -

Thanks. The contractor said it was plaster and it does appear to
be. I will probably try the mild acid approach after some more
scrubbing and see what happens...

You'll need more than a mild acid. Use a reasonable one for
sufficient time and no scrubbing will be necessary as the acid will
eat the gypsum (plaster). Repainting will be necessary.

--

dadiOH
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Thanks. I'll look into this also.

RL