I am not sure whether I have a damp problem or the remains of a former damp problem.
There are mottled patches under the paint on a couple of walls. When I scrape the paint/plaster from these spots there is a dark patch on the wall. These appear behind the door, on another internal wall and in two patches by the French windows, where the curtains would be.
The places don't appear damp, but I have no damp meter. On the wall behind the door there is a horizontal line above which are these marks and below is clean bright paint suggesting new plaster (perhaps after damp proofing).
Do I have a damp problem or the aftermath of a previous damp problem?
What is the solution, replaster or seal the wall?
Best regards,
Dave
There are mottled patches under the paint on a couple of walls. When I scrape the paint/plaster from these spots there is a dark patch on the wall. These appear behind the door, on another internal wall and in two patches by the French windows, where the curtains would be.
The places don't appear damp, but I have no damp meter. On the wall behind the door there is a horizontal line above which are these marks and below is clean bright paint suggesting new plaster (perhaps after damp proofing).
Do I have a damp problem or the aftermath of a previous damp problem?
What is the solution, replaster or seal the wall?
Best regards,
Dave