I'm fitting a small en-suite in my bedroom. It's going to be a quite small
'thin' room and will just have space at one end for a shower cubicle and a
toilet at the other, entrance will be between these 2 items with a very
small sink in there also.

As there's no window I was going to put an extractor fan on the external
wall, which is the wall where the toilet will be fitted, however my builder
is suggesting a shower fan above the shower also. The simplest thing would
be to fit the shower against the external wall and put the fan there but
there's a gas meter on that wall which I'm going to box in with a small
cupboard. There's room to fit the loo next to it but the shower can't go
there.

Does anyone know what the building regs are regarding shower cubicles in
rooms with no windows? The builder seems to think a shower fan is required
but I'm wondering if one wall mounted fan above the loo will be enough to
clear WC odours and moisture/condensation produced from the shower.

Are extractor fans quiet nowadays? I was going to wire it to the light
switch and have it set so it would run several minutes after the light was
turned off (is that also building regs?) but as it's in a bedroom I don't
want it to wake up other people in the room when the loo is used. My friend
fitted a 'humid-stat' in his en-suite extractor fan and said it kept going
off during the night and waking them up, he had to take it out eventually!

Brian

Brian wrote:
I'm fitting a small en-suite in my bedroom. It's going to be a quite small
'thin' room and will just have space at one end for a shower cubicle and a
toilet at the other, entrance will be between these 2 items with a very
small sink in there also.

You will have the problem that whichever end you put the fan, the
airflow will be sucked from the room door to the fan, with the other end
of the room being more or less dead air that will not circulate.

For hygiene, I would rather have shower vapour sucked across the room to
a fan above the WC, than have aerosolised **** from the WC wafted over
toothbrushes at the washbasin.

If you put a vent grill near the shower and have a snugly fitting door,
with the fan at the other end over the WC, there will be a current of
air right across the room.

You don't need a fan over the shower cubicle itself, it's the room which
must be ventilated. I think TLC website has a fan size calculator.

Fans are quieter than a flush, but if you have a loft above the bedroom
(or even just a void above the en-suite) you can use an in-duct fan
mounted on vibration-dampening supports.

Owain

Brian wrote:

Are extractor fans quiet nowadays? I was going to wire it to the light
switch and have it set so it would run several minutes after the light was
turned off (is that also building regs?) but as it's in a bedroom I don't
want it to wake up other people in the room when the loo is used. My friend
fitted a 'humid-stat' in his en-suite extractor fan and said it kept going
off during the night and waking them up, he had to take it out eventually!

So-called shower fans are typically located in the roof space, connected
to a grill above the shower and another in an outside wall; ie the motor
is not in the room per se. I fitted ours using big rubber pads between
the fitting bracket and a roof rafter; there's no more than a slight hum
audible in the bathroom. Wouldn't want it any quieter so I know it's
working!

David

Owain wrote:

For hygiene, I would rather have shower vapour sucked across the room to
a fan above the WC, than have aerosolised **** from the WC wafted over
toothbrushes at the washbasin.

Eew - as someone who not long ago fitted a fan in the shower cubicle,
and who has a washbasin in line with the loo - thank you so much for
that. I'll think of you as I clean my teeth tonight (and maybe I'll
keep my toothbrush in the cupboard)

David

So that's why my teeth are going brown!

Steve

In message , Brian
writes
I'm fitting a small en-suite in my bedroom. It's going to be a quite small
'thin' room and will just have space at one end for a shower cubicle and a
toilet at the other, entrance will be between these 2 items with a very
small sink in there also.

Sounds exactly like the en-suite in my bedroom. I have a 100mm
humidistat/timer fan on the external wall above the toilet, and a small
vent in the back wall of the shower cubicle, up top and directly
opposite the fan.

The fan is wired to come on with the light and go off 20 minutes after
the light is switched off, or independently trigger on the humidistat.
Some experimenting is necessary with the humidistat adjustment to get
the best setting, but the reason I wanted the humidistat was that the
timer delay isn't always enough by itself to clear the moisture after a
shower, and the humidistat will keep the fan running until its gone.

It actually works very well. Instances of the fan triggering on the
humidistat when not showering are actually quite rare (once you get the
setting right, as mentioned above) and I've recently replaced a Manrose
fan that lasted about 5 years until the bearings started clattering,
with a Vent-Axia Silhouette, which is impressively quiet.

Phil

Lobster wrote:

Eew - as someone who not long ago fitted a fan in the shower cubicle,
and who has a washbasin in line with the loo - thank you so much for
that. I'll think of you as I clean my teeth tonight (and maybe I'll
keep my toothbrush in the cupboard)

It kind of conjures up this image of a small white sphincter with a
little arrow on it... ;-)

--
Cheers,

John.

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I'm fitting a small en-suite in my bedroom. It's going to be a quite
small
snipped

Try : http://www.manrose.co.uk/frameb.html

or : http://www.ubbink.co.uk/dmv/design_g...lding_regs.htm

or : http://www.vortice.ltd.uk/technical/dom-vent4.asp

Hope this helps
Regards
Tom