Bathroom extractor fan sizing

[garmcqui]

Hi all,

Redoing bathroom and trying to work out if I should upgrade the current extractor fan. Bathroom isn't large (8ft x 6ft, 48sqft), and has a bath and shower, plus a large (6ft x 4ft) mirror that does get very steamed up and takes ages to clear.

The current extractor is a 4" Envirovent Silent 100 - 95m3/hr (55cfm) with timer, ducted straight out through the cavity wall. It is located at the opposite side of the room to the shower.



Am I right in thinking this should be powerful enough? Or should I block this up and put an inline fan in the ceiling? Or leave this and have both?

Thanks

 

[foxhole]

Decent ceiling fan would be better over the shower area.

 

[garmcqui]

Thanks. Something like this be ok?

https://www.screwfix.com/p/manrose-...Vy4FQBh27yg4-EAQYASABEgLSfvD_BwE&gclsrc=aw.ds

Extracting through ceiling and venting out through a soffit vent?

is it difficult to close up the old vent through the wall? There’s a 4” duct through the wall, can I just use expanding foam in this?