My daughter has bought a 1930s ex-council house. We've been stripping the walls ready for skimming and came across these marks under the bedroom window sills.
I'm hoping they were caused by the old windows the previous owners replaced.
The walls feel cold (they're external walls after all with no cavity insulation) but not damp (to my untrained hands).
I'm thinking: cut out all the old plaster, check for signs of damage and re-plaster (by a pro).
I'd really like some advice before we end up doing something now that we'll regret later.
MTIA
Andy
I'm hoping they were caused by the old windows the previous owners replaced.
The walls feel cold (they're external walls after all with no cavity insulation) but not damp (to my untrained hands).
I'm thinking: cut out all the old plaster, check for signs of damage and re-plaster (by a pro).
I'd really like some advice before we end up doing something now that we'll regret later.
MTIA
Andy