I want to install some low voltage halogen lighting in my downstairs toilet
ceiling, am I right in thinking that the insulation in the ceiling has to be
removed from above the lights and that some sort of guard should be placed
around the fittings above the ceiling? Can someone tell me how to do this
without access from above?
Mmm. I have found that you can generally - if its e,.g. upstairs under
the roof, and rockwool is what you have - cut the hole and push the
rockwool away to make a chamber for the lights. I haven't actually
bothered with flower pots or anything like that, just left a big enough
airspace so that teh heat gets carried to teh plasterboard around the hole.
I DID have problems with toroidal transformer buried in the insulation
tho. I DO have access from the top, and when I plated the attic with
chipboard, I cut holes to allow the transforers to be in the 'cold roof'
space. If all esle fails simplty remove a large section of rockwool
through the holse to be used to mount the lights. About 0.5 sq meters of
unisiluated roof will probably be fine. Although ths screws up the
insulation, in use the lights are punching out 50W of heat, and in an
average room, 50W of heat over 0.5 sq meters is a net contribution to
room heating. Beware of cold draughts coming down around the fitting
tho. If you can reach them from above, you can build little boxes around
them with chipboard screws and maybe 'no more nails' to glue onto
ceiling. This is the best of all.
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