Thanks for the reply.
The roof tiles are slate. Is the job you have described something that could be done from the inside or would it need to be from the outside? At the back of the house the roof is three stories up from the ground
First post here and by no means a DIY or roofing expert!
Moved into a 1890s mid terraced house and found that two upstairs bathrooms (en suites with shower) are extracted with inline fans into the loft. It's not clear how long this has been the case but always intended on fixing the...