Recessed Light Cans, Heat And Attic Insulation - Insulation - Contractor Talk

Recessed Light Cans, Heat And Attic Insulation

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Old 09-28-2008, 03:22 PM   #1
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Recessed Light Cans, Heat And Attic Insulation


I have R-30 fiberglass batts in my attic. The install job was poor quality in my opinion. I plan to add roughly 6" of blown in fiberglass on top of the existing batts. Prior to doing this I want to seal up the attic, including overtop the recessed light cans that protrude up into the minimize air movement into and out of the building envelop.

I've heard of building a small box out of insulated duct board around each box, rather than replacing each recessed light with an I/C can, for fire purposes.

My question is what's the best product to use to build this box around the recessed light can that sticks up into the attic???
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Old 09-28-2008, 03:32 PM   #2
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Re: Recessed Light Cans, Heat And Attic Insulation

As a homebuilder, you should have no problem with erecting a nice little house for it.


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Old 09-28-2008, 03:47 PM   #3
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Re: Recessed Light Cans, Heat And Attic Insulation

This is a question for the sparky's.
Either they need ventilation,
or they don't.
Put your location in your profile!
( seems there really are dumb questions)
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Old 09-30-2008, 02:02 PM   #4
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Re: Recessed Light Cans, Heat And Attic Insulation

If they are not IC rated then you shouldn't box them in at all. These guys shouldn't overheat and putting the box around it will do that and not only will they not perform you are chancing a fire. Your choices are

1. Replace with a sealed can light or IC rated.
2. If you get a sealed light and/or IC rated you can cover with insulation
3. Best thing to do is seal the attic with foam, usually the slants, this way the heat loss from through the lights will stop the stack effect.
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