Bathroom Extractor Vent in Tenement Flat

I live in a Glasgow tenement and have one of those long-ish and narrow bathrooms (~1.3m x 3.5m). Currently I have an extractor fan mounted to the window. It's pretty loud and the room is still quite steamy after a shower but the fan clears it in a little while after the shower is turned off. The shower is door side, not window side of the bathroom so probably doesn't help much but there's no mould issues after 5 years of living here, so it must be doing something.

The windows are super old, leaking in some rooms, and I need to get them replaced. I'm wondering if I should keep the window mounted bathroom fan or move it into the ceiling? I'm top floor and have access to the loft.

If the latter, how best to get the vent to outside? Is it possible to vent through the eaves (not sure how much space there is yet) or is through a roof tile the best bet?

If it's possible to go through the eaves, I would be looking to DIY it. If via the roof, I would be taking a chance with a contractor (haven't found a reliable/competent roofer yet since my last one moved away).

Yes you can vent it through the soffit if there is one and if you can access it

23vc said:

Yes you can vent it through the soffit if there is one and if you can access it

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From what I remember last time I was up, there's not actually a soffit fitted, there's just a gap between the wall and roof, a fairly narrow one if memory serves. I plan to go up this weekend to take a proper look and some measurements.

I assume I can't just point a bit of PVC round/square duct at the gap and hope it doesn't blow back into the loft or have condensation drip down the wall. What sort of soffit/vent grille should I use?

You’d normally need to fit a grille on the outside, but you can get ones that can be fitted from inside. Have a google for them