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Community and Q&A

How to air seal a slim LED light

drewintoledo | Posted in Green Building Techniques on

This is how I’m doing it.  I’ve seen lots of questions on how to seal ceiling lights and this is what I’ve come up with.  Any feedback is greatly appreciated as I am early in the build and can easily change if I’m doing something incorrectly.  If anyone has suggestions for change please reply.

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  1. Expert Member


    From my perspective it looks great.

  2. mgensler | | #2

    I did the same in my house as well. It worked well.

  3. nynick | | #3

    I like it. Thanks

  4. Expert Member
    Akos | | #4

    Great job Drew, simple and effective.

    One thing I found that makes wiring the LED slims easier is to put both wires through a single wire clamp. Most clamps are rated to take two 14/2 wires and since all the wires are now facing in the same direction is is much easier to push the wire connector on.

  5. 5Stud | | #5

    I do like the staple idea.
    Not sure what the caulking is but if it remains flexible should be fine.
    I personally would use acoustical sealant.

  6. drewintoledo | | #6

    This is satisfying feedback. Akos I figured that out near the end of installing the boxes. Wish I would have figured that out in the beginning.
    Hey 5Stud, thanks for the recommendation. You must have missed the title of the video, "How to air seal slim led puck lights using Lessco boxes and acoustic sealant caulking". I figured "normal" caulk would expand/contract/crack/shrink/etc. given the temperature extermeties in the attic for my area.

    1. 5Stud | | #7

      I keep telling myself I need a bigger phone!

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