Plaster over damp walls

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Hi
We've removed all the wallpaper in the room which we are getting re-plastered by a plasterer. The wallpaper was damaged by damp and I wonder if there is anything we can do to protect the new plaster from damp? Either before or after plastering. Or should we use a specific plaster?

Also, there are some bits of the wall that are painted and some (under bay window) where it's a wood panel. How to we prep those bits before the plasterer come? Or will he do that?

Thanks!
 
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JohnD

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you have to find the cause of the damp and fix it.

the most common cause is condensation, resulting from hanging wet washing around the home and/or insufficient ventilation.

but round a window it could be rain penetration, especially if a bay

post photos and descriptions of the damp. Including the outside and the roof and gutter.
 
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Blocked gutters or leaky flashings are often culprits.
 
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Nobody dries their washing in their homes... and they always open the windows.. I was reliably informed...hundreds of times
 
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OP,
Read back and research your issues on previous threads on here and the building forum.
Then come back with the relevant & variable info.
eg.
is the house rendered?
what floor ?
solid floor?
solid walls?
rads or appliances in the room?

"damp" without further information means nothing - there are various kinds of damp and condensation.
 
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The sensible solution to this, is to establish what is causing the damp issue. Re-plastering would not prevent this. It could be caused by a leak, externally or internally, it could be rising damp, it could be condensation. Absolutely no point doing any plastering until it is resolved.
 

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