"Steve" wrote in message
...

"Snowman" wrote in message
...
The internal walls in my 1960s house are all built of red coloured,
hollow
blocks which are very hard. I always have to faff about when fixing to
them - sometimes you drill into a solid bit, other times a hollow bit, so
you end up messing about with different fixings. Sinking back boxes for
sockets are a nightmare - it's not deep enough if you don't cut into the
block, but if you do, the hollow bits are too deep, then there's
hoizontal
solid bits to cut out.

I don't know the name for these blocks, but does anyone have any advice
on
how to work with them?

Peter.

Fixing wise had you thought of using cavity wall fitting?

Steve

I have tried some of those, but it's still a fiddle. The thickness of the
plaster and the outer part of the blocks make it just a bit deep for a lot
of the cavity fixings I've found, then you can end up just on the edge of a
solid bit. Putting up things such as kitchen units needs something pretty
strong.

Peter.