"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

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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