Damp problems - advice needed

3 years ago

We have just renovated a three-storey Victorian end of terrace house in London. Unfortunately, on the bottom floor, we have three quite bad damp issues that the renovations failed to solve. A damp proof course was installed, but this hasn’t stopped the damp.

The bottom floor is partly underground, with a private driveway beside it. We have three different damp issues:

1. Under stairs cupboard

the paint here looks like it could just be peeled off the walls like paper. This is an internal wall, which is not exterior facing. I’m not sure how to fix this. Any ideas on the issue and treatments?

2. Wall penetrating damp

damp is penetrating this external facing (partly underground wall). Do I just sand off the paint, paint on a stain blocker and re-paint?

3. Wall bubbling

I think that this one might be efflorescence, but I’m not sure..?

As I’ve just spent a fortune renovating, I’m not keen to tear up walls, radiators etc to fit a membrane. I don’t mind doing regular maintenance to keep these walls in good shape, but I’m just not sure what that maintenance and initial fix should be. Any advice would be appreciated! Thank you

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Comments (4)

User
3 years ago
Hi, were the walls treated before being painted or papered? Was all existing wallpaper removed?
Aveline
Original Author
3 years ago
The walls were skimmed over with fresh plaster, and then painted. Don’t think there was any wallpaper on them before.
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Sarah U-S
3 years ago
Did you have a damp report before renovating, and did you have specialists in to do the renovations? If so, the work might be under guarantee??? If not, I would get a damp specialist around - they usually come and give free advice.
Aveline thanked Sarah U-S
User
3 years ago
Agree with Sarah. New plaster should also be primed or painted with bare plaster paint when the walls are fully dry.
Aveline thanked User

Damp problems - advice needed

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Damp problems - advice needed

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Aveline
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