Damp After Pipe Leak

[rsvp]

Am hoping someone can shed a bit of light on this for me - I live in a grade ii property - there is no damp course - about 10/12 weeks ago I noticed a damp patch on the hall seagrass floor covering - it turned out to be a leak in a faulty copper pipe taking water to one of the upstairs bathroom. Outcome was, seagrass was ripped out and a dehumidifier ran for about three weeks - after getting the go ahead from the insurance company my builder rectified the damaged pipe, replastered the huge hole in the wall then the carpet layers inspected and replaced the seagrass matting. Now I have a mould line around the entire hall way -( there is a storage place under the stairs but whilst smelling a bit musty (no more than usual) seems to be just the way it always has. I've put my hand in the access hole to the pipe and whilst the pipe feels wet, the floor seems dry. Builder says the wet on the pipes is condensation - (as yet I have no heating on)
Would really welcome any advice as I hadn't had this problem beofre the leaking pipe. thank you

[The Builder]

Plaster contains a lot of water initially, rsvp. It takes weeks to dry thoroughly. While this is happening, the evaporating moisture fills the air in the room.

It's a colder, damper time of year. That plus no heating will slow the drying process...... and, present the moisture with cold surfaces on which to condense. Hence the "tide mark".

Copper pipe with cold water in it offers a perfect place for vapour to condense. Give it time.

[rsvp]

Your explanation has ironed out a lot of queries The Builder, thank you-I've followed many threads you have contributed to and have found your advice to be very, very sound - thank you - I'll follow your advice. Stay well

[The Builder]

Thank you for your kind comments, rsvp.