We have a few recessed lights with no easy access to the body.
In my fight with for air tightness I found that they (naturally)
are quite a source of air leaks. For those where I can reach the
body I just patched all holes with Scotch tape (and I use halogen
lights in them, 15 Watts, so they are not hot -- a lamp which was
on for a long time can be hold with bare hands, so there's no
danger of overheating).
I just wonder -- has anybody seen some clear covers for recessed
lights (glass or whatever) to cover from underneath those where I
cannot reach above them?
Well the air vents are there for a reason... That said, the best solution (albiet
far from cheap or easy) is to get insulated fixtures which are designed for
contact with insulation-- that way for the most part they are sealed and I'd
imagine as close to airtight as you'll get with recessed cans. Alternatively, you
may want to ask around how to install recessed fixtures in a damp/moist
environment such as a bathroom; you'd get responses that indicate how to keep the
moisture out, probably form the bottom side.
Out of curiosity, are those low voltage halogens (mr-16's), or a larger 'par'
Funny, the last two IC (Insulated Ceiling) fixtures I bought were not
airtight. I had to put the special vapour barrier liners over them.
The ones I installed a few years ago were airtight, with a
can-inside-a-can design. These new ones were so different I had to
double-check that they really were IC and not mis-packaged non-IC.
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