Burying gas pipe in plaster wall
Andy Hide
it is not possible to do this unless an iron pipe is used rather than
copper.
I have seen new houses where the gas outlet behind the cooker *is*
buried in the wall.
The supply will have to come down from the loft and therefore be run
down the back of cupboards causing me a lot of extra work if the pipe
can't be sunk into the wall.
Not that I'm doubting he knows what he's talking about but does he ?
dc
"Andy Hide" <andy...@totalise.co.uk> wrote in message
news:8f88db3.02090...@posting.google.com...
In my younger days, I often wondered why cabling was always encased in
conduit under the plaster (in an old house the light switch cabling will be
inside an iron pipe), until one day, a BT engineer informed me that the
plaster contains elements which will eat away at the cable insulation. I
think it was lime in the plaster that was the main ingredient.
I suspect the same would be true of copper.
Why is there never a metalurgist around when you need one?
Matt Birchall
>"Andy Hide" <andy...@totalise.co.uk> wrote in message
>news:8f88db3.02090...@posting.google.com...
>
>>Is it possible to bury a gas pipe in a plaster wall? My plumber
>>
Is he a plumber or a CORGI man - there's a bit of a difference!
>>claims
>>it is not possible to do this unless an iron pipe is used rather than
>>copper.
>>
Certainly you don't bury copper in concrete without some form of
barrier (There are considerable numbers of houses where the
concrete has eaten the pipe and the contents of your
CH system has leaked into the flooring). You can get
tape to wrap the pipe to stop the corrosion though.
Maybe you can get plastic coated pipe?
>>I have seen new houses where the gas outlet behind the cooker *is*
>>buried in the wall.
>>
>>The supply will have to come down from the loft and therefore be run
>>down the back of cupboards causing me a lot of extra work if the pipe
>>can't be sunk into the wall.
>>
>>Not that I'm doubting he knows what he's talking about but does he ?
>>
>
>In my younger days, I often wondered why cabling was always encased in
>conduit under the plaster (in an old house the light switch cabling will be
>inside an iron pipe), until one day, a BT engineer informed me that the
>plaster contains elements which will eat away at the cable insulation.
>
It won't touch modern PVC (will it?) but the old stuff with
cotton and rubber etc probably wouldn't last long in contact
with plaster.
>I think it was lime in the plaster that was the main ingredient.
>I suspect the same would be true of copper.
>
>Why is there never a metalurgist around when you need one?
>
I think we need a chemist (IANAC!) rather than a metallurgist!
JohnFlax
=========================================================
Even if you haven't done it yourself, and I'm admitting nothing, you must know
someone who has drilled or nailed into a buried water pipe or electric cable.
You must also have seen television reports of houses that have been completely
demolished by leaking gas.
Do I need to say more?
Rick Dipper
Can the pipe go on the outside of the house ?
Water is fine if you break the pipe, you get wet,
with gas you might get a bit of a bang, possibly
even a big bang .........
Rick
Stefek Zaba
> Can the [gas] pipe go on the outside of the house ?
Apparently so. We have a gas fire whose supply runs in an unprotected pipe
round two outside walls of the house, and the BGas fitter who came to service
the boiler said it was quite OK when we asked, dubiously, about it.
Stefek
Tony
andy...@totalise.co.uk says...
Cue Ed. :)
You can place it in a chase, but beware as wall movement may damage the
pipe. Ideally it should be run down a ventilated duct.
I worried about this in my kitchen - I decided to dry line the walls and
run the pipe (plus lots of cable for ring mains, cooker, extractor, hob
ignitor, lights) behind it. It worked really well.
The pipe should be protected against corrosion. I used a gunky tape (of
the Denso type) to wrap around mine. I thoroughly recommend you don't
go this route, that stuff is highly unpleasent and difficult to
apply/handle. Get plastic coated copper if you can.
Have a look at these links anyway.
Read section four of this one (design of the installation):
http://www.cda.org.uk/megab2/build/pub124/
And part D of this one:
http://www.hmso.gov.uk/si/si1998/19982451.htm
Hope this helps,
TonyJ
Mark B
> it is not possible to do this unless an iron pipe is used rather than
> copper.
KUTERLEX is what you need. It is white plastic coated copper pipe, which is
supplied on a roll. It is quite easy to unroll.
The idea is to have no buried joints and the plastic coating gives corrosion
protection.
mark b
Matt Birchall
Which says
(6) Where any installation pipework is not itself contained in a
ventilated duct, no person shall install any installation pipework in
any shaft, duct or void which is not adequately ventilated.
Doesn't that include the space (void) behind dry lining?
(Or is your dry lining the plaster dabs type? i.e. no void)
First time I've seen this document but they seem to be trying to prevent
build up of gas in spaces without detection. In the case where you
run the gas in a space with electric wires that would appear to be
against the regs?
It sounds as though its not OK to box a gas pipe in,
for example, behind the units in a fitted kitchen?
matt
Ed Sirett
Matt Birchall <""matt.birchall\"@no spam.btinternet.com> wrote in message
news:almqu5$a1v$1...@helle.btinternet.com...
They have to cover industrial practice as well as domestic.
Gas pipes can be run in unventilated vertical ducts provided they are
within one dwelling and less than 100cm^2.
Gas pipes can be run in stud walls provided they are coated to prevent
corrosion and adequately supported (harder).
It is _easier_ to comply with the regs for burying gas pipes in chases when
they are iron rather than copper.
Gas pipes can be run in other situations but there are more regs.
Electical cables should be kept >25mm away from a gas pipe - which stops you
using the gas pipe as a support for the wiring.
--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Andrew Gabriel
"Ed Sirett" <e...@makewrite.demon.co.uk> writes:
> The regs are phrased in a general and double backward speak.
> They have to cover industrial practice as well as domestic.
>
> Gas pipes can be run in unventilated vertical ducts provided they are
> within one dwelling and less than 100cm^2.
What about horizontal ducts (which is of some more immediate
interest to me)?
--
Andrew Gabriel
International Man of Mystery
"Ed Sirett" <e...@makewrite.demon.co.uk> wrote in message
news:1031769272.6680.0...@oldnews.demon.co.uk...
> > >Cue Ed. :)
> > >The pipe should be protected against
> > >corrosion. I used a gunky tape (of
> > >the Denso type) to wrap around mine. I thoroughly recommend you don't
> > >go this route,
So do I, as it is now banned on gas pipes and water pipes.
Tony
says...
Why is that then? Anything I need to worry about with my installation?
TonyJ
International Man of Mystery
"Tony" <n...@spam.please> wrote in message
news:MPG.17e9de09b...@newshost.breathemail.net...
The ban has just come in. I forget the reason. I'll find out.
Owain
| Electical cables should be kept >25mm away from a gas pipe - which stops
you
| using the gas pipe as a support for the wiring.
Didn't stop BT tiewrapping a neighbour's drop wire up his gas pipe (actually
up the mains external riser, not the neighbour's internal pipe)
Phone lines. Lightning. Pshaw.
Owain