Just been in the loft to get some baby clothes (wife was convinced it was g oing to be a boy ...) and I noticed there was *some* damp. Just a bit of co ndensation on the angle iron shelving, plastic boxes, etc. Nothing dripping , mineral wool does not feel damp, but there is some condensation. And its not that cold at the moment.
The roof is rosemary tiles, no sarking or felt, no eves vents (no real dept h of soffits). It was always bone dry before, but I have recently added a good depth of wo ol insulation so its a lot colder in there. At present we have no extractor in the bathroom so maybe some of the humidi ty from there is making it into the loft. The bathroom ceiling is skimmed p lasterboard without an vapour membrane. I had assumed that the gappy tiles would vent sufficiently, but perhaps I n eed a bit more up there. What type of vents are suitable to use in with rosemary tiles (ideally fitt ed from inside)?
I could also fit some vents in the 9" gable wall if required. And perhaps paint the top of the plasterboard with an oil based paint. Ideally I need to sort this before the winter arrives !
Cheers, Simon.