Hello PPUKers,
My flat is in the lower ground floor of a Victorian property, and it used to have a header tank (very noisy and lived in my upstairs neighbours' understairs cupboard!) feeding cold water to my bathroom.
Due to unequal hot/cold water pressure, I had the tank cut out of the system so the cold now runs off the mains again, and the external piping to the tank that ran down the wall into the floor removed. This involved pulling out some big metal clasp pins that were embedded fairly deeply into the wall.
The same wall (interior, brick, party wall) has since been replastered, and looks a treat, apart from two circular patches of damp (approx 4" across each) that are in the exact position that the pins were situated. This is about 3ft up from floor height and causes the paint to spoil.
Any ideas as to what might be causing this? I have already paid £400 for an inconclusive damp survey from a reputable source. My next-door neighbour is an absolute nightmare and will not answer his door, or respond to written pleas. The damp patches come and go in their severity, but I'm not sure if it's in conjunction with the weather.
Other possibly useful information: The offending wall is in the hallway, not the bathroom itself; The old header tank was completely drained; Large areas of the same wall (which runs the whole length of the flat) were inexplicably tongue-and-groove lined by a previous owner, making me worry that this may not be a problem in isolation; The flat doesn't smell damp.
Many thanks in advance for your advice. I especially look forward to wise words from Mr Grimsdale (I've been following this forum for a while now, and he's my favourite contributor!).
My flat is in the lower ground floor of a Victorian property, and it used to have a header tank (very noisy and lived in my upstairs neighbours' understairs cupboard!) feeding cold water to my bathroom.
Due to unequal hot/cold water pressure, I had the tank cut out of the system so the cold now runs off the mains again, and the external piping to the tank that ran down the wall into the floor removed. This involved pulling out some big metal clasp pins that were embedded fairly deeply into the wall.
The same wall (interior, brick, party wall) has since been replastered, and looks a treat, apart from two circular patches of damp (approx 4" across each) that are in the exact position that the pins were situated. This is about 3ft up from floor height and causes the paint to spoil.
Any ideas as to what might be causing this? I have already paid £400 for an inconclusive damp survey from a reputable source. My next-door neighbour is an absolute nightmare and will not answer his door, or respond to written pleas. The damp patches come and go in their severity, but I'm not sure if it's in conjunction with the weather.
Other possibly useful information: The offending wall is in the hallway, not the bathroom itself; The old header tank was completely drained; Large areas of the same wall (which runs the whole length of the flat) were inexplicably tongue-and-groove lined by a previous owner, making me worry that this may not be a problem in isolation; The flat doesn't smell damp.
Many thanks in advance for your advice. I especially look forward to wise words from Mr Grimsdale (I've been following this forum for a while now, and he's my favourite contributor!).