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Advice on bathroom lighting in shallow false ceiling
wrote:
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.
*shrug* I like teh 50W units. Nice and bright and tough. YMMV
I reckon that a square meter per 50W is about right.
About the right amount to heat a well insulated room as well :-)
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?
Oh, its almost better - its a lot stronger than plasterboard - its
gyspum filled with I think chopped glass strand. Think 'asbestos roof'
and hats the sort of brittleness, tho its easier to cut with a padsaw etc.
Have to be a little carefil banging nails throough it - i'd drill and
screw as per MDF, then fill the heads and paint.
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.
They all look pretty much teh same - white,chrome or brass rim with or
without eyeball. Screwfix must do em. I got cheapos from newey and eyre
and they have been fine. I also used their individual toroids. Pretty
good BUT they need air round em or the overheat and cut out. However
they are hard to fit after the ceiling cos they are almost to wiode to
pop through the holes. If I has to do what you are doing I might well
add an access hole and use ne socking big transformer, and wire from
that. 300W toroids are not that huge. AND it sounds like you have space
above the new ceiling.
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