New ceiling j-box older home/insulation


Old 11-18-13, 05:21 PM
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New ceiling j-box older home/insulation


My house was built in 1955. I need to install a ceiling mounted light with a pull switch in a pantry.

All the existing ceiling boxes are wired from the above alcove. There is about 2 feet of the older, clothy insulation in the attic area.

I need to shimmy into the area and mount a j-box for this light. Wiring is not a problem as there is a j-box to feed off of very close and I am familiar with what is on this circuit.

Should I just clear the insulation away and use a ceiling fan brace bar that goes between the joists to hang this j-box?

If I do that, can I just put the insulation back over the box? Is there an IC rated j-box?

Any suggestions are appreciated.


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Old 11-18-13, 05:35 PM
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You can use a 4" bar box and when finished you can cover it with insulation.

You can also use an old work 4" round plastic box if it's just the pull chain fixture.

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Old 11-18-13, 05:36 PM
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J-boxes do not need to be IC rated. Insulation can be put over them with no issues.

You do not need a fan brace unless you are installing a fan, or a very heavy fixture. Most cases a round remodel box will work just fine and will save you from swimming in insulation.
Old 11-18-13, 05:39 PM
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You could use an old work box from below. No hanger needed. No need to remove the insulation. However the big problem may be that J-box. If the wiring is not grounded it can't be extended.

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ECHO Echo echo
Old 11-18-13, 05:46 PM
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Major echo in this thread. Great minds think alike.

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