The waste pipe from the handwash basin in our downstairs loo, runs
'horizonally' along a wall for about 2 metres, about 6 inches from the
floor. To reduce visible pipework in the loo, we'd like to hide this
pipe by putting it in a chase in the wall, then tiling over the top to
conceal.

The wall in question is an exterior wall which was built only about 2
years ago, with nothing above except pitched tiles roof over loo and
entrance porch. Inside skin is lightweight block (possibly 100mm thick
'Celcon'), with plaster finish. Outer wall is brick. Wastepipe is
standard 32mm diameter white plastic (I think, but might be 40mm)

Please can anyone advise whether I can safely cut a chase in this
celcon wall without problems? Will the wall fall down afterwards?!

TIA

D Green

David Green wrote:
The waste pipe from the handwash basin in our downstairs loo, runs
'horizonally' along a wall for about 2 metres, about 6 inches from the
floor. To reduce visible pipework in the loo, we'd like to hide this
pipe by putting it in a chase in the wall, then tiling over the top to
conceal.

Why not just box it in, and place a narrow shelf on top
of the boxing? Personally I wouldn't cut it into the wall.

On 25 Oct 2005 05:49:06 -0700, "David Green"
wrote:

The waste pipe from the handwash basin in our downstairs loo, runs
'horizonally' along a wall for about 2 metres, about 6 inches from the
floor. To reduce visible pipework in the loo, we'd like to hide this
pipe by putting it in a chase in the wall, then tiling over the top to
conceal.


Why not drop it down and run it along the floor then hide it with one
of those fat skirting boards designed to hide pipes?

Bernie The Bolt
-
'In those days players weren't as highly paid as now, so
most of us had part time jobs. Jimmy Case was a bouncer at
the She Club, Tommy Smith used to open supermarkets as a
Charles Bronson look-alike and Everton's Alan Ball and I
were the voices of Pinky & Perky on TV.'
http://tinyurl.com/bm8cd' - Emlyn Hughes

It was boxed in until recently but, as there's a small radiator on that
wall too, the boxing looked untidy and came too near to the bottom of
the rad (restricting airflow).

I am trying to avoid tiling over an untidy looking boxed-in wastepipe.

I've just found the Celcon website, which advises maximum chase depth
horizontally to no more than 1/6 block thickness. Is there an easy way
to check block thickness? Perhaps it's more than 100mm--maybe a
narrower waste pipe is available?

David.

I've just found the Celcon website, which advises maximum chase depth
horizontally to no more than 1/6 block thickness. Is there an easy way
to check block thickness? Perhaps it's more than 100mm--maybe a
narrower waste pipe is available?

It is very unlikely to be more than 100mm. 100mm is by far the most common
size and is easily strong enough for a single storey outhouse wall.

Christian.