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Old 12-19-2012, 02:53 AM   #1
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Insulation and can lights


We are upgrading some of the lighting with the repairs and will be getting rid of some of the older than my grandma lighting and adding some cans. We are able to use the new construction version but will be getting blown in insulation. I have been advised to cover the lights in the attic. Is it acceptable to build a box out of left over sheet rock and sit that over the light giving plenty of room when they insulate, and can that box stay there forever or just cover the cans while the insulation is being done?

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Old 12-19-2012, 05:53 AM   #2
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Insulation and can lights


Look for cans that are IC rated. IC stands for "insulation contact". If the cans will be installed in an attic space, which I assume they will be due to blown in insulation, you will need air-tite cans. The designation for that is AT.

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Old 12-19-2012, 07:26 AM   #3
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Insulation and can lights


Quote:
Originally Posted by k_buz View Post
Look for cans that are IC rated. IC stands for "insulation contact". If the cans will be installed in an attic space, which I assume they will be due to blown in insulation, you will need air-tite cans. The designation for that is AT.
^^That.

If your going to the big box stores for them (HD or Lowes), I would avoid he CE (Comercial Electric) brand. I've used a bunch of Halo's (my garage alone has 16 of them) and while not the best in the world...I've had no issues.

If the cans you have now are already installed and are not IC rated...yea, you will need a box. If they are not AT rated as well, I believe you can solve that with the trim...they make air tight trims for most cans....

I would also suggest spending the bucks and going with LED bulbs...you can dim them and they will save you a boat load of money in the future.....and, you won't be replacing bulbs as often....if at all.
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Old 12-29-2012, 05:13 AM   #4
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Insulation and can lights


Apologies for not getting back to this before now I was sidetracked by having to replace all the breakers in the panel and 9 million miles of intercom and coax wiring in the attic. Thanks for the input.

If I read the responses correctly - if we are using blown in insulation then I have to use the AT designation regardless of if I build a box around them? My thinking is that if I build the boxes and leave them up then I might be less inclined to step on the bloody things after the insulation is in.

Will also look at the LED versions and thanks for the info on what not to get, we are working with a local supplier and they have been great with respects on what "not to get".
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Old 12-29-2012, 07:07 AM   #5
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Insulation and can lights


If these are going to be installed in a ceiling with an insulated attic above you will need ICAT cans (insulation contact air-tite).
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Old 12-29-2012, 07:44 AM   #6
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Insulation and can lights


k buz is right on everything. if you think you might step on one of these cans then you better stay out of the attic. they are not mounted on top of joists in the attic and that is all you can step on. i once had a client who just had to follow me around in a high ceiling attic and about ten steps into the attic "whoosh". he had stepped on a piece of 2x4 put between joists to be pearling for sheetrock that wasn't nailed. down he went through the sheetrock, caught one leg on the joist, flipped over and hit on his hand which he instincly put out and broke his wrist in five places. don't trust anything in the attic except the joists themselves. if you need to identify the cans in a blown attic just wipe back enough insulation to reveal the top. once again if you think you might step on a can light, you need to STAY OUT of your attic.
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Old 12-29-2012, 12:15 PM   #7
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Insulation and can lights


Before you insulate, seal around the cans with caulk or spray foam. Otherwise, air will go through the insulation.
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Old 12-29-2012, 01:43 PM   #8
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Insulation and can lights


Thanks for the additional information.

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