Old Damp Problem

[mrs_rachie]

Hi,

We recently moved into a new property that had previously had a bad leaking roof problem. The roof was fully replaced before we bought the property and the leak is therefore fixed. We sealed the stained area and wallpapered, but after a few weeks marks have come through the wallpaper, which feels slightly damp. Is it likely there's still a leak somewhere, or could the original damage still be having an effect? The whole original problem area isn't affected, just the bottom part - which means it's isolated to a patch on the wall rather than coming down direct from the ceiling. It hasn't moved or grown from its original boundaries.

Any ideas?

Thanks!

 

[Softus]

I know you think you sealed the stained area, but if you had then there wouldn't be a stain.

Was this upstairs or downstairs, and how high off the floor was it?

Do you have solid or cavity walls? Are the walls plastered?

 

[mrs_rachie]

The original leak was in the top corner of the upstairs bedroom, extending from the ceiling and moving down the wall - part on a connecting wall and part on an exterior wall. The problem area at the moment though is just the bottom part on the exterior wall, not the ceiling section. We coated the area twice with sealant - is there something else that we could do in that respect? My big worry is that it's essentially a new stain.
Solid walls, not cavity - it's a victorian terrace.

 

[Softus]

I understand.

Do you get the feeling that the recent rain has anything to do with it?

 

[mrs_rachie]

Could be. Mind you, it's been raining today and it doesn't seem to be causing a problem. A new development is that we had a look at the exterior wall at it looks like some pointing work has been done.

The only other new thing is we've had the heating on for the first time in months.