Return to the Lighting Forum | Post a Follow-Up

Recessed LED cans under blown-in insulation?

Posted by serval (My Page) on
Tue, Aug 20, 13 at 15:11

Is some type of covering required over recessed IC and air tight light cans with LEDs?

I'd like to install recessed 6" LED lights in my kitchen ceiling (now just one big florescent light fixture). Above the kitchen is attic space that is covered in loose chunks of blown-in fiberglass insulation.

My plan is to install cans that are IC and air-tight (and EcoSmart LED kits from Home Depot) then have my electrician wire them up.

I have seen conflicting suggestions on whether it is necessary to put a box or other barrier between the IC-AT cans and the insulation. Can anyone confirm that nothing more than the IC cans (which will in fact be in contact with insulation) are necessary?

Also, some cans say they are specific for LED lights - can't I use any IC-AT can for my EcoSmart LEDs so long as it's the correct size (here, 6")?

Follow-Up Postings:

RE: Recessed LED cans under blown-in insulation?

Nothing required. IC rated cans are intended for direct contact with insulation.

Some halo cans are meant to be used with halo led modules as the connector is a proprietary 2 pin device. If you're sufficiently savvy, the can could be rewired or the connector replaced.

On the other hand, buying the standard IC rated can is less hassle.

RE: Recessed LED cans under blown-in insulation?

My handyman suggests rolling out battens of pink panther insulation over the boxes (rather than getting more insulation blown in). Is that reasonable? FYI, this is in Napa, CA where we usually have a few days of 100+ degrees and a maybe 10-20 days where we get a little frost at night (never really below 30 degrees and even then only for a couple hours at a time), it never snows.

Do we cut holes in the insulation over the boxes or just let the roll of insulation rest on top of the box?


RE: Recessed LED cans under blown-in insulation?

That helps a ton, thanks for the reply @davitay! Planning on skipping the halo cans and just using a screw in type connection IC-AT.

Do I need to buy a separate trim piece / circle for these, or just:
(a) the can;
(b) the EcoSmart light kit ($28 at homedepot);
(c) wiring and (dimmer) switches

Thanks again!!!

RE: Recessed LED cans under blown-in insulation?

Ok, you're subject to title 24 if you put in new cans - no e26 base. Try looking for gu24 cans. If you get the Cr6, there is no need to buy the trim unless you must have another color.

RE: Recessed LED cans under blown-in insulation?

I can get the GU24 base cans (IC-AT) and EcoSmart's - thanks for pointing that out, I would have missed the Title 24 compliance issue.

And good news that I don't need extra trim pieces, that is assuming my HD has the GU24's with CR6's (rather than LR6, right?).

I realized that I have 6 other tabs open on my browser that have detailed and helpful input from you @davidtay, thanks so much for your help!

Can you recommend a specific dimmer that I would be able to find at HD, OSH, or my local hardware store (that would work nicely with these EcoSmarts)?

RE: Recessed LED cans under blown-in insulation?

The lr6 installs and works similar to the cr6 except for a smaller dimming range. No trim required.

The lutron's diva cl works fine unless you also need home automation.

RE: Recessed LED cans under blown-in insulation?

I went through this myself a few years ago (we bought a house that was built in the mid-80s). Some of our lights were IC (no air-tight back then), and some were not (including new ones that were installed in 2008 in the bathroom--hmmmph!).

If they are IC (or preferably ICAT), you are done. Leds put off a lot less heat, and for those that are designed with built-in trim (Cree CR6, Sylvania RT6, Lighting Science Glimpse), as opposed to just a bulb, the trim acts as an external heatsink, so that is an additional reason not to worry.

As for insulation, I'd blow more in, as I trust an additional layer of blown insulation over rolling battens over previously installed (and lumpy) blown-in.

RE: Recessed LED cans under blown-in insulation?

I'm not sure which cans to order. It seems I should get:
1. IC
2. Air tight
3. GU24 (there are specific GU24 cans?)
4. Remodel

I couldn't find these criteria on Home Depot or Lowes' websites; can someone point me in the right direction? I'm hoping to meet those requiremts for around $10/can or less. Any ideas?

RE: Recessed LED cans under blown-in insulation?

RE: Recessed LED cans under blown-in insulation?

I found the Cree RR6 12W GU24 6 Recessed Retrofit Housing on polar-ray for $15 each. Are these the housings? They meet the above criteria (GU24, IC, AT, remodel/retrofit).

However, they're 12w ... So I would be stuck with low wattage bulbs. That should be fine given the 33 year lifetime on these bulbs; but I'm curious if I can use higher wattage rated housings with the GU24 6" EcoSmart LEDs ... What do you suggest?

Didn't expect picking housings would be so complicated, but that's for the suggestions!

Here is a link that might be useful: Cree RR6 12W GU24 6 Recessed Retrofit Housing on polar-ray

RE: Recessed LED cans under blown-in insulation?

@mattpete, you posted a second ahead of me! That said, it seems @davidtay and others have recommended the Halo H750RICAT with a GU24 pigtail connection after clipping the Halo connector. Since the Halo H750RICAT is $10.67 and the Cree is $14.99, I'm inclined toward the Halo.

I would be ordering
12 x H750RICAT
3 x 4 packs of ExoSmart 6 in. 9.5-Watt 2700K LED Downlight with GU24 base (E)* (4-Pack)

Right? Plus a couple dimmers?

RE: Recessed LED cans under blown-in insulation?

How much extra work (and time) would it be to convert the Halo to GU24?

RE: Recessed LED cans under blown-in insulation?

@mattpete - Looks like a simple splice that will be easy before mounting the cans. Remove the halo proprietary connector then attach the GU 24 pig tail ...

But is that pig tail included with the EcoSmart lights or something I need to buy separately (and if so, where?)?

If that's not included and costs extra, it would make more sense to buy the cans I guess (though they would only be 12w which would limit future lights, right?).

Does anybody else see it differently?

This post was edited by serval on Wed, Aug 21, 13 at 11:25

RE: Recessed LED cans under blown-in insulation?

The pigtail should come with the lamp. Nora lighting has gu24 cans.

RE: Recessed LED cans under blown-in insulation?

For 6", you can get the retrofit GU24 housing that Cree makes specifically for that LED module:

Cree RR6-12W-GU24 Housing at Polar-Ray

They also make a new construction version.

Edit: sorry, just noticed that you found the same one. I would buy one that already comes with the GU24 connector, rather than splicing it manually (why do the extra work?) You're right that HD doesn't carry a suitable housing & you need to buy online.

Also, on the dimmer the Maestro CL dimmers also work with these lights - the CL dimmers from Lutron should work the same regardless of style (Diva, Maestro, etc.) If the load is too high (not likely in your case), the next step up is their ELV dimmer, but that costs about five times as much and probably not needed.

This post was edited by calumin on Wed, Aug 21, 13 at 17:26

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Lighting Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here