My wife and I are starting to redo a portion of our basement. The house was built in 1939 and the basement walls are the stone foundation of the house (i.e. no dry wall, framing etc.) We would like to finish the room while keeping the walls exposed.
At some point, the stone and mortar was covered/sealed with a material with a plaster like feel and finish. In some places, this treatment has lost adhesion to the wall and in others it remains well in place.
I have received the advice that a wire brush and then a treatment with a product such as DryLok or Zinsser 123 would create a surface ready for a topcoat.
Are there any other recommendations out there?
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