In message , Sparks
writes

As I have said before, I am currently refitting my bathroom.

Currently we have a very old Xpelair extractor fan on the wall, with just a
pull cord to turn it on and off.

The hole for this is huge, probably at least 150mm wide.

I will be installing a shower cubicle in the corner, do I need to install a
fan above this, or can the fan be on the wall further along the wall? - The
trouble is, the ceiling above where the shower is going, is sloped (The
majority of the ceiling is flat, it just slopes down with the roof line down
one edge - where the shower will be!

I don't think it matters much. In our previous bathroom (approx 2.5m x
2.5m) we had a shower cubicle in one corner. The extractor fan was in
the centre of the ceiling.

It worked fine, didn't suffer any mould etc. in the shower, or other
symptoms of lack of ventilation.
--
Chris French