Thinking ahead to replacing my floor standing boiler
Worcester...................... It sits in an upstairs airing cupboard with
plasterboard sandwich walls (no decent noggins).

When I come to change, in order to widen my choice of boilers - but to avoid
trying to get a good fixing onto the plasterboard I wonder if it would be
permissible to make up a sort of angle bracket which would enable the weight
to be taken by the airing cupboard floor (above the stairs and about 18"
above the hall floor. I would have something welded out of angle steel so it
would be strong. Perhaps something like a pipe jig (which comes with some
boilers) with feet to make it "L" shaped.

Any thoughts?