08:35AM | 11/20/06
Member Since: 04/23/04
3 lifetime posts
I know insulation has to be a certain distance away from a non-IC recessed light fixture but what about wood? I'm installing a few of these fixtures in a vaulted ceiling (roof is directly above) and am concerned about the old wood catching fire. Is there any way to shield the wood from the heat? The instructions say to leave a 1/2" gap between the fixture any any combustible material (I'm figuring the wood falls in this category) but I'm concerned that it isn't enough space to keep the heat buildup from causing a fire. Would something like sheet metal or some other sort of large square plate diffuse the heat so it doesnt' build up in one place?


09:14AM | 11/20/06
Member Since: 04/25/05
1915 lifetime posts
The limitation on the not having insulation next to the light is not because the insulation could get too hot. Rather it is because the Can can't cool off and the light over heats, damaging the electrical insulation.

The manufactures information (1/2" spacing) is all that is need to protect the wood from the light fixture.

Why would you think that the manufacture would give instructions that would cause the house to catch fire?


12:43PM | 11/20/06
Member Since: 04/23/04
3 lifetime posts
The instructions said 1/2" from combustible material. To me it meant that if the wood is 1/4" away from the fixture it would catch fire but 1/2" is plenty of room. A 1/4" didn't seem to make that much difference to me. From what you're saying, the spec is more so the light itself doesn't overheat not the wood or insulation around it. Correct?


12:58PM | 11/20/06
Member Since: 04/25/05
1915 lifetime posts
No, as I said they are two completely different specs for different purpose.

The insulation spec is to protect the can from over heating. Actually I would need to read the details, but I think that it covers any that would ENCLOSE the can. You can't enclose it with insulation, wood, metal, etc.

The 1/2" space is clearance to protect the wood from the heat of the can.

The wood joist is only near a realatively very small part of the can and would not affect it's ability to disipate heat.


06:52PM | 04/13/14
a roof, ceiling,joist rafter combo, and insulation on either side of light is creating a closed space and non ic cans will create a fire hazard


03:57PM | 06/20/16
I have a similar question. I am installing 4" recessed remodel cans with LED lights. The housing is IC rated. There is no insulation in the ceiling but the housing would touch the wooden joist and a insulated heating conduct. IC rating says contact with ceiling insulation, but I have contact with wood and heating conduct insulation. Is this safe?
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