Hi,
We moved into our new house 2 weeks ago - over the last few months we've had a few ongoing problems with damp patches which looked like there were sorted.
Last night we noticed a damp patch in the master bedroom where the wall meets the roof. This morning there are loads of damp patches around the room - on the ceiling etc. I can't understand this - there are no plumbing pipes in the area and it hasn't rained over last few days. Could the heavy night frost have caused them???