"Chip C" wrote in message
oups.com...
effi wrote:
some recessed lighting is absolutely horrendous in design

have notice some that are ic rated (supposedly okay to come in
contact with
insulation) yet they have:
- holes in the housing (fiberglass dust, carcinogenic, from the
attic
can pass right through them, as well as other types of harmful to
human dust
which accumulates in attics)
- fiberglass placed INSIDE the housing (exposed to the interior
of the
home) by the manufacturer

few would cut a hole in their ceilings to allow air flow from the
attic to
enter the house, yet this is what is done when some recessed lights
are
installed

supposedly even the air tight recessed housings are not 100% air
tight
between the living area and the attic

Should there not be a vapour barrier anywhere there is thermal
insulation, such as the ceiling under an attic?

not in humid areas

Even IC-rated devices
do not provide a vapour barrier, but are supposed to be compatible with
one when properly installed. (Possibly you need to get a specific
vapour barrier that matches the fixture.) The vapour barrier would keep
insulation where it belongs.

recessed lights must have 3" of space between them and insulation
horizontally

above them there is to be nothing so the heat can dissipate upwards

per national electric code in the usa


Having said that, currently legal insulation is not ("yet" you might
add) officially recognized to be carcinogenic.

recheck california, you have a surprise looming on the horizon ; )


Current code cannot
protect us from hazards that are not yet identified and accepted as
such by authorities.

current code is based on profits; fads start in california which recognizes
fiberglass is a "potential carcinogen"

reality is that fiberglass *is* carcinogenic, and reality is a bitch


Not to say that I much like recessed lights.

i'm with ya on that one


Chip C