We're thinking about having our gas meter moved from the lounge to the
outside wall of the house. There is a pavement right outside, and I'm
reluctant to go with a surface mounted box (plus they're *really*
ugly). As such I think we'll opt for a cavity box. However, the house
was built in 1850 ish and so has stone walls that are about 570mm
thick(slate slabs really). Is it ok to put a cavity box in a wall like
this (which I suspect doesn't really have any sort of cavity)?
Cheers for any help
from firstname.lastname@example.org contains these words:
I don't see why not. The wall will almost certainly be double skinned
and the centre could well be rubble filled but it doesn't have to be. I
built such a box into my kitchen wall but that was during the course of
a rebuild from ground to eaves so I just built round the box. In your
case you might have to secure any rubble infill above by putting in a
lintel above the box that extends into the wall far enough to contain
Incidentally my box at least extends out from the wall about 2.5". I
assume all such boxes do the same as about 8" is needed to contain the
gas meter and that is in excess of the width of a brick plus cavity in a
modern cavity wall.
You can hire a superb power-tool for that job, from the likes of Travis
Perkins' Hire Shop. Essentially, it has a curved reciprocating blade
shaped like the end of a hockey stick with teeth, which will make short
work - and a clean cut - of your task. It is designed explicitly for
that, and chasing cables into walls.
No, the house isn't listed (thank god).
I was thinking about just hiring a disc cutter or a 12 inch grinder to
do the job. I'll have a look for the tool you mention Bilbo.
Thanks everyone, as helpful as always.
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