Venting bathroom extractor to garage?

[Niscars]

Hi, I am mid build of an upstairs bathroom in our big old French farmhouse and to avoid drilling a hole in the corrugated cement board roof for the extractor fan outlet, I am considering running the conduit, sloping downwards into our very large and drafty attached garage (size 160m3). This is certainly safer in terms of not having to worry about water ingress but am I right in assuming that the moisture output from a 12m3 bathroom will have no significant impact in a big drafty garage?

Many thanks,
Oscar

 

[Burnerman]

It depends on what is of value in the garage Oscar - but if its as draughty as the French garages I've experienced (i.e a gale blowing through) then there shouldn't be a problem.
It is a wee bit unorthodox regulation wise though!
John

 

[JohnD]

Why don't you just use a 110mm core drill to make a hole for the duct in the bathroom wall?

 

[Niscars]

Thanks for that, I have gone for it and after some trouble now have flexible conduit through the ceiling and into the garage.

Why don't you just use a 110mm core drill to make a hole for the duct in the bathroom wall?

No external walls for that option..