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- 28 Nov 2013
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Hi there, it seems to be a common subject but here you go!
A year ago we moved into our first house and had our walls fixed for rising damp, through a combination of damp proof coursing and injections into the walls.
We've now painted the room and everything is great except two small areas where the paint is a lot darker and it looks damp.
We thought it might be penetrating damp but could find no external damage to the brick work, or any pipes that might be leaking or damage to the gutter making water run down the walls. To make sure we painted and sealed the outside wall but the damp remains.
We had a damp specialist look at it and he thought that it could be that the rising damp had got into the bricks there and that when the damp proof coursing was done it happened to be just slightly higher than this and so still remains trapped in the bricks there.
We used a dehumidifier that made the dark patches disappear but then they came back again when we didn't use it.
It is next to the chimney breast so I've read up that perhaps it's salt damp where these hygroscopic salts are absorbing moisture?
Now the paint has lifted off the wall and it's started to flake off.
So I'm guessing what we need is to hack out the damaged plaster, back to the bricks, treat it somehow and then plaster back over it?
The area that would need removing is about 53 by 20 cm.
Does this sound like the right approach and what kind of treatment would you guys recommend?
Many thanks in advance.
A year ago we moved into our first house and had our walls fixed for rising damp, through a combination of damp proof coursing and injections into the walls.
We've now painted the room and everything is great except two small areas where the paint is a lot darker and it looks damp.
We thought it might be penetrating damp but could find no external damage to the brick work, or any pipes that might be leaking or damage to the gutter making water run down the walls. To make sure we painted and sealed the outside wall but the damp remains.
We had a damp specialist look at it and he thought that it could be that the rising damp had got into the bricks there and that when the damp proof coursing was done it happened to be just slightly higher than this and so still remains trapped in the bricks there.
We used a dehumidifier that made the dark patches disappear but then they came back again when we didn't use it.
It is next to the chimney breast so I've read up that perhaps it's salt damp where these hygroscopic salts are absorbing moisture?
Now the paint has lifted off the wall and it's started to flake off.
So I'm guessing what we need is to hack out the damaged plaster, back to the bricks, treat it somehow and then plaster back over it?
The area that would need removing is about 53 by 20 cm.
Does this sound like the right approach and what kind of treatment would you guys recommend?
Many thanks in advance.
