"Philip Thompson" wrote in message
...
Trying to work out the best way to vent a bathroom using a fan with 4"
pipes
and feeding through the roof.
It is a bungalow but there is no way to vent through a wall so it has to
be
the roof.

No way? Guessing the outside wall must be all window except above the bath.
If so think about SELV fan above bath. Alternatively is it possible to duct
to the soffit?

Alan

"Philip Thompson" wrote in message
...
Trying to work out the best way to vent a bathroom using a fan with 4"
pipes
and feeding through the roof.
It is a bungalow but there is no way to vent through a wall so it has to
be
the roof.
The tiles are concrete, flatish with a square ridged design put there in
about 1950.
Never done a through the roof before so any advice would be handy.
My thought so far are with putting a metal pipe through the tiles similar
to
what they fit to gas boiler outlets.
The bathroom ceiling where the fan grill sits is only 3' below the roof
tiles.

Any thoughts?

Get one of those lead 'tiles' with a rubber grommet bonded to it used to
take a soil pipe stack vent through the roof (sorry I don't recall the name-
cost me £17). Also a short length of soil pipe (maybe 18") and a 'mushroom'
cap. Couple the fan to the pipe with a length of the flexible house
designed for the job, seal with gaffer tape and a giant jubilee clip.

Regards

Brian

--
73
Brian
G8OSN
www.g8osn.org.uk

and

www.qsl.net/g8osn for FREE training material for the UK Foundation and
Intermediate Licences

"Philip Thompson" wrote in message
...
Trying to work out the best way to vent a bathroom using a fan with 4"
pipes
and feeding through the roof.
It is a bungalow but there is no way to vent through a wall so it has to
be
the roof.
The tiles are concrete, flatish with a square ridged design put there in
about 1950.
Never done a through the roof before so any advice would be handy.
My thought so far are with putting a metal pipe through the tiles similar
to
what they fit to gas boiler outlets.
The bathroom ceiling where the fan grill sits is only 3' below the roof
tiles.

Any thoughts?
Philip



Hi Philip,

If the vent is being powered with a fan, then don't touch the tiled roof at
all. You bungalow will have eaves, the eaves will have soffit boards under
them, so go out through the ceiling of the bathroom and then bend the
pipework round and down out through the nearest eaves. Fix a fly screen
covered grille to the soffit board at the end and attach your pipe. As long
as the fan is running, the air will be pushed along the pipe and out the
end.

Try using the flexy spring pipe stuff that's covered with the polythene.
It's the same diameter as the rigid grey pipe and will be easier to work
with.

http://www.rytons.com/

Just a thought. :-))


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BigWallop

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"BigWallop" wrote in message
...

"Philip Thompson" wrote in message
...
Trying to work out the best way to vent a bathroom using a fan with 4"
pipes
and feeding through the roof.
It is a bungalow but there is no way to vent through a wall so it has to
be
the roof.
The tiles are concrete, flatish with a square ridged design put there in
about 1950.
Never done a through the roof before so any advice would be handy.
My thought so far are with putting a metal pipe through the tiles
similar
to
what they fit to gas boiler outlets.
The bathroom ceiling where the fan grill sits is only 3' below the roof
tiles.

Any thoughts?
Philip



Hi Philip,

If the vent is being powered with a fan, then don't touch the tiled roof
at
all. You bungalow will have eaves, the eaves will have soffit boards
under
them, so go out through the ceiling of the bathroom and then bend the
pipework round and down out through the nearest eaves. Fix a fly screen
covered grille to the soffit board at the end and attach your pipe. As
long
as the fan is running, the air will be pushed along the pipe and out the
end.

Try using the flexy spring pipe stuff that's covered with the polythene.
It's the same diameter as the rigid grey pipe and will be easier to work
with.

http://www.rytons.com/

Just a thought. :-))


---
BigWallop

http://basecuritysystems.no-ip.com

Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.497 / Virus Database: 296 - Release Date: 04/07/03


Thanks for all the suggestions.
OK on getting out via a soffit. I looked at that a few days ago but cant get
at the soffit board from inside. The soffit is fairly low down the wall and
inside the wall is built up to the tile felting between each sloping roof
timber. I removed a section of this brickwork but all I could see then was a
heavy timber running on top of the wall leaving no space to get any further
down to the soffit.
The "lead tile" idea is looking favourite so far

Regards
Philip

"Philip Thompson" wrote in message
...
Trying to work out the best way to vent a bathroom using a fan with 4" pipes
and feeding through the roof.
It is a bungalow but there is no way to vent through a wall so it has to be
the roof.
The tiles are concrete, flatish with a square ridged design put there in
about 1950.
Never done a through the roof before so any advice would be handy.
My thought so far are with putting a metal pipe through the tiles similar to
what they fit to gas boiler outlets.
The bathroom ceiling where the fan grill sits is only 3' below the roof
tiles.

Any thoughts?


Marley do a range of ventilator exhausts disguised to look like
regular roof tiles. I've just had one installed in my period cottage,
and it is almost invisible from the outside.

http://www.marleyroofing.co.uk/content/151.cnt

Cheers

MH.

In message , Philip Thompson
writes

"BigWallop" wrote in message
...

"Philip Thompson" wrote in message
...
Trying to work out the best way to vent a bathroom using a fan with 4"
pipes
and feeding through the roof.

Hi Philip,

If the vent is being powered with a fan, then don't touch the tiled roof
at
all. You bungalow will have eaves, the eaves will have soffit boards
under
them,

OK on getting out via a soffit. I looked at that a few days ago but cant get
at the soffit board from inside.

Yep I had a problem with getting out through our soffits, so I went
through the roof.

The "lead tile" idea is looking favourite so far

It's called a 'weathering slate' - and the malleable metal sheet is
normally Aluminium rather than lead now AFAIK . Works fine.

I think you can also get special vents to match with certain roof tiles
so that it hardly notices.
--
Chris French, Leeds

What you need if a "weathering slate" as described above and a a cowl
to fit he short section of soil pipe to ues as a duct.You can also get
a condensation trap to fit to the duct and run an overflow pipe to the
eaves,but with such a short duct length don't think you need to do
this.