On Fri, 11 May 2018 14:29:57 +0100, Harry Bloomfield
wrote:

brought next idea :
It'd help to tell us what the wall really is.

I think he is maybe hitting a concrete or steel lintel, just above the
window - hence the 'solid' comment, rather that 'solid plaster'.

AFAIK it's just plaster there, where I drilled into. The 'solid'
comment refers to the fact it's not plasterboard with a cavity behind.
It was quite soft though and the drill went in easily. I'm sure there
is a lintel, but I don't know where exactly.

It might be best to try to drill fixings above the lintel, if there is
space above, or work out whether it is steel or concrete and use an
appropriate drill bit. If steel, it would have to be drilled and tapped
with a thread and a machine screw used. If concrete it will be very
hard, so may need something like an SDS drill and bit to make an
impression.

Probably not applicable.

If it really is just plaster, a good technique is to make a larger than
needed hole, fill with car body filler, then push a wall plug into that
and leave to set.

That sounds a good idea. I'll probably try this, thanks :-)

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