I am going to attempt to insulate around halogen (high hat) ceiling
light fixtures from above in the attic crawl space. Can someone
recommend the best type to use that is fire safe? And can it be
purchased at a home center (consumer available)?
The insulation should be installed per the light fixtures UL listing. Some
fixtures are rated for direct contact with insulation.$$$ Some require a
small clearance. $$ The least expensive fixtures are not rated at all for
contact with insulation.
Best check your local codes for what your attempting.
Fiberglass and rock wool are both very fire resistant. Fiberglass, at least,
is very easy to find in the US.
More importantly, are the fixtures rated for burial in insulation? If not,
you're living on the edge in a big way.
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