The Natural Philosopher wrote:

I'd go for 6x50W as the bulbs are a bit more robust.

But do we actually need that much light in a 2.5 x 1.5 metre bathroom?
Also I would have thought that low voltage 35 or 20 watt lamps would
be pretty robust.


300W spread over the area of the ceiling - 3.75 sq meters - is less than
100W/sq meter. That is about what my underfloor heating kicks out at
full crack. If you are worried, use plasterboard rather than MDF. That
will take a deal of heat. Or even Masterboard (multiboard) which is
'asbestos replacement' board

How easy is Masterboard (or Supalux) to work with? Is it similar to
ordinary plasterboard, better, worse or what?


If you are worried about heat also, youi could run fat '50A' cable from
a remote toroidal to the lights rather than tuck transformers up in the
void. I'd avoid electronic transformers vbeacuse of the possibility of
damp,. and the blasted buzzing they produce.

That's not really an option as there really is nowhere to put it.


Use the special bathroom fitments where spalshing is likely.

Er yes, but what I'm after is matching plain downlighters and
swivelling ones. I was hoping someone might be able to point me in
the direction of a manufacturer/supplier who has matching ones with
the required IP rating.

--
Chris Green )