Air Sealing Lights
A while back you had said about ceiling lights with an attic overhead: The best approach to air seal semi-flush lights which hang 12″ from the ceiling (and air flows around them) is to install airtight electrical boxes — for example, Airfoil boxes or Lessco boxes in the attic. We have old construction.
After contacting Airfoil, their boxes are only for new construction with open access. At 2.9″ Depth, I’m not sure the Lessco boxes will work either, as the 4″ round blue plastic electrical boxes we use (although for some lights we’ll use 4″ metal pancake boxes) are 2″ Deep. That doesn’t give much space around the electrical box, and it might not fit. (My electrician will take a look at this shortly to see if he thinks it would work, but you might know).
Those Tenmet boxes @ $20 each + shipping are fairly expensive for 16 lights. I’d rather find a box that we can caulk or foam down on the attic floor than build 16 boxes, which will get a little pricey for my electrician to do, but we’ll do that if we can’t find anything else. Please let me know about any other pre-made boxes for this application!
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