Up in the loft at the weekend to install noggins for the wardrobes, and I noticed the timbers up there are very damp, we've only been in the house since august, so can't say if it's to do with the weather or not, however I have recently insulated (well clear of the tiles and the eaves, about 6 inch gap to the tiles and maybe a foot to the eaves.

The bathroom doesn't have an extractor, nor is there any way for damp to get up there (no downlighters etc) so the only thing I can think is that the water is coming in from outside (the top of the timber appears damper than the rest as well)

Is this something I need to be massively worried about and get a roofer (builder, joiner, who does rooves?) in yesterday, or will it be sage enough leaving till later in the year (when I can afford it properly!)