Boring - Bathroom Extraction

[halo34]

Ok its boring but...

Our current abode (which is new to us) has a stupid arrangement where the shower area has a light fitting right above the shower with an in-line extraction fan type duct/light linked to the light switch.

The stupid bit being it vents direct into the the loft space and I would prefer to route it outside.

However for one reason or other its 3/4 across the other side of the house to get to an external point (going out roof isn't option).

I don't think the current set up is in line with regs etc.

whats the best option?

Is it buy a better bigger fan with a time delay, then route it right across the house in the loft space to outside?

[Glassman]

You can get a fan that will fit in the ducting higher up into the loft - less noise

[GreenV8S]

Suppose you could just trunk it across the loft, but any water vapour pulled out by the fan is going to condense inside the trunking and I imagine that whatever doesn't drain out one end of the other would go stagnant. Is the shower really that far from an external wall?

[halo34]

Its near an external wall BUT for some reason where the roof comes down to meet the floor its been built up with breeze blocks. Where as the other side you can get access to the lip to put in vent thingy.

So I would need to drill or knock out a block and its really really tight access - with the potential for comedy DIY disaster coming through floor incident.

[ALawson]

You need something like this.

http://www.allaboutelectrics.co.uk/doc/12/vid/1756...

With a load of the standard hose/trunking and then a vent for the u/e of the facia boards, wickes, b&q etc all stock these.

If you make the initial loop high then any condesation should drip towards the vent.

Doesn't the existing light/fan have a non return valve arrangement?

[halo34]

ALawson said:

You need something like this.

http://www.allaboutelectrics.co.uk/doc/12/vid/1756...

With a load of the standard hose/trunking and then a vent for the u/e of the facia boards, wickes, b&q etc all stock these.

If you make the initial loop high then any condesation should drip towards the vent.

Doesn't the existing light/fan have a non return valve arrangement?

Looks like what I was thinking, don't have a clue TBH about the non return, certainly doesnt drip on your head

Will go have a look in a bit...

I have enough space that I can create a high loop then gradually phase it down towards the facia, really just wanted to check if there is a maximum distance its effective for.

[ALawson]

I think the normal extraction kits are designed for 3m, I have used similar fans on boats and the runs of hosing are a lot longer, although the air isn't moist.

All that water going into your loft cannot be good!