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    plastering sandstone building, persistent damp spots and ...

    fortunately its not listed, but I'm led to believe its 1700's. The outside wall is pebbledashed with, I'm guessing, sand/cement - so I guess the point your making is that the outside wall wont breath either. Therefore, the indoor wall must? Possibly it sounds like leaving what I have, as...
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    plastering sandstone building, persistent damp spots and ...

    thanks for all the info and detail. I think what I'll do is drill more holes in the existing plasterboard, and then batten along the existing plasterboard as its smooth and level. Then I'll use some foil backed plasterboard on top. I'm doing it this way as I'm trying to open the place as a...
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    plastering sandstone building, persistent damp spots and ...

    have left it about 3+ months.... left doors/windows open when I can. Had 2*dehumid's in there. I understand salts/efflorescence can discolour the plaster, but it feels damp/cold in spots. I really should get a damp meter and take some readings to track it over time.
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    plastering sandstone building, persistent damp spots and ...

    thnx... much appreciated. You've confirmed my thinking on the sandstone. I think the only option is to take down and redo (with a different contractor!). Is it not possible to use a chemical adhesive on the sandstone with foil plasterboard, and skip the battens? Only ask to save room... Is it...
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    plastering sandstone building, persistent damp spots and ...

    its amazing just how much you learn after the problem occurs.... I bought a vandalised property that had suffered due to having the lead ripped off the roof, combined with age... It's an old sandstone building with brick extensions. After drying out the building as much as I can, I had it...
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