Extractor fan venting into loft

[Dereekoo]

So we put slates and underlay on roofs to keep out the rain and you ventilate humid atmosphere in to protected space?? Perhaps only saving grace is that it will take a few years for timber to rot and show and roof repair will be shared by other tenants depending on your lease specifics, Some sort of handyman/jack of all trades to sort.

 

[securespark]

Roof repair may well not be covered by all if it can be shown that an incorrectly fitted fan has caused the damage.

 

[fyj]

Thanks for the further replies. I've deactivated the fan now and will look into getting ventilation to the outside installed. I checked that other fitting and it's disconnected, so I don't think that's a problem, but thanks for pointing it out. Astute observation about the coal dust - this is actually an old mining and industrial area, so that could be the reason - I think it's OK where it is, since presumably it's sat there for a few decades already.