How deep ceiling space for LED ceiling fixtures?

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Old 06-19-16, 06:28 AM
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How deep ceiling space for LED ceiling fixtures?

How deep does the wall or ceiling space need to be to fit some ceiling LED lights, the recessed ones.
I'm finishing a room which has concrete everywhere. So it would be concrete, layer of 2 inch styrofoam, forent, then 3/4 paneling.
 
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Old 06-19-16, 07:48 AM
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Not sure what lights you are referring to, you need to be more specific. Are you looking at surface mounted fixtures, recessed cans, or some other LED lights like LED strips?
 
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Old 06-21-16, 12:00 PM
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LED recessed into the ceiling
 
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Old 06-21-16, 01:10 PM
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LED recessed into the ceiling
That doesn't tell us anything. Post a picture or the make and model number.
 
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Old 06-21-16, 01:41 PM
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Seem to have found it. On average, most LED recessed lighting only needs 1.5 inches space.
Is more space needed for the junction box above it?

eg this installs onto the junction box:
https://www.homedepot.ca/en/home/p.4...000764637.html
 
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Old 06-21-16, 04:32 PM
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Home Depot does carry some "disk" LED lights that will fit into a 4" electrical round box, just be warned, it is a tight fit!

A 4" box will need about 2" so if there is a flat 2x4 and 1/2" rock it will just fit. If you have the space I would recommend using regular recessed cans if you are wanting recessed lighting. You will have better options and it will cost less. Standard cans require about 7.5" while shallow ones need about 5.5".
 
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Old 06-21-16, 09:06 PM
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It's a very small reception room, the floor space is only 50sqft and room height 87 inches so I need to keep as much space as possible.
Someone also mentioned using a transformer and then running low voltage cabling in the ceiling to the LED lights? Although the transformers buzz.
There will be 2" foam insulation and 3/4 strapping and 3/4 paneling so I have a bit of room for 2 junction boxes in the ceiling in that room for 2 LED lights?
 
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Old 07-10-16, 05:36 PM
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For example, these ones:
https://www.homedepot.ca/en/home/p.4...000764637.html

Should the junction box be flush with the ceiling or should the junction box be recessed further in also?
 
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Old 07-10-16, 05:43 PM
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Yes, those are similar to the disk lights I was referring to.

According to the NEC, junction boxes are are required to be flush with the wall surface if combustible material, and no more then 1/8" set back from non-combustible material like drywall.
 
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