ventilation in a bathroom

[The Natural Philosopher]

However building regulations do apply to any 'material change' so if doing a rewire, it is arguable that they do apply to all electrical

*fittings*.

[Mary Fisher]

Yes.

But it doesn't make sense to have it controlled by the light switch, wasting power when you go into the bathroom during the day.

Today is Earth Day.

[Andy Burns]

Solar powered searches for one day only[1] :-)

Apart from fact that the entire solar system is, well errm, solar powered every other day too, but YKWIM ..

[Mary Fisher]

I do. And isn't it a clever Google! Mind you, they mostly are.

Mary

[Guy King]

The message from "Mary Fisher" contains these words:

Except in the case of our downstairs loo[1] which has a PIR controlled light so visiting kids don't get all panicky when they shut the door and only then realise it's utterly dark inside.

[1] Known as the sidraT 'cos unlike the Tardis it's a lot smaller inside than you expect. Even smaller than HDV's, and doesn't have a priest-hole like hers.

[Mary Fisher]

Teach them how to use the switch :-)

But the question was about a BATHroom, no mention was madeof a wc.

Not that I think it's necessary to have an extractor fan in the lav, we don't, just the wall ventilator brick. It's not a problem now and wasn't when five offspring lived here or when we have people staying.

Mary

[Harry Bloomfield]

It happens that Mary Fisher formulated :

A humidity sensor only would mean it would only be actuated by use of bath or shower. I assume you also have a toilet in your bathroom and the need to remove smells after its use? The PIR copes with that need.

[Mary Fisher]

No.

No.

As I said, the op asked about a bathrom, not a lavatory.

Mary

[Guy King]

The message from "Mary Fisher" contains these words:

That's great if they're your own kids, but there's times when there's half a dozen ectopic sprogs hurtling around. Several times they got into the downstairs loo and had major wobblies as a result. The lock's also one of those that can be opened from the outside if needed - which I reckon's a good idea on pretty well all lockable internal doors - plenty of privacy but access when needed in an emergency.

[Mary Fisher]

I don't know how people survived without modern technology.

er - did you really mean ectopic?

Mary

[Guy King]

The message from "Mary Fisher" contains these words:

Yeeah - they're out of place - ie. in mine.

[The Natural Philosopher]

Its no necessary for ventilation per se, but it IS necessary in conjunction with modern insulation and draughtproofing standards..in essence the theory is that you build what amounts to a hermetically sealed polystyrene box, and then punch specific holes in it to control moisture build up.

It works, but its a far cry from open chimneys/fires and draughty doors and windows..

[Mary Fisher]

We don't have those either. Ours is an efficient house. And a warm one.

[David Hansen]

On Sat, 22 Apr 2006 21:48:18 +0100 someone who may be The Natural Philosopher wrote this:-

Moisture build up can be controlled with a suitable window. No need to burn electricity and more reliable.

[The Natural Philosopher]

Well sure, it can, but windows let cold air (and thieves) in as well as hot sticky air out.

The purpose of the extractor fan is to provide a secure way to exhaust saturated air, and replace it with warm drier air from the rest of the building..thats the theory anyway.

[Mary Fisher]

Ah but David if you open a window you let in fresh air, which can sometimes even be COLD!!!!!!!!!

Mary

[ARWadsworth]

A theory that only works if there is a way for air to enter the room with a fan. You need a gap under the bathroom door to let warm drier air in.

Adam

[David Hansen]

On Sun, 23 Apr 2006 12:52:59 +0100 someone who may be "Mary Fisher" wrote this:-

Suitably designed natural ventilation will provide adequate ventilation without excessive cold draughts. The only "problem" is that it requires more thought than an extractor fan.

[Harry Bloomfield]

It happens that Mary Fisher formulated :

For a bathroom which does not include a lavatory then a humidity controlled fan (no PIR) is fine.

[Mary Fisher]

Aye well, there's the rub!

Mary

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