Air Sealing Electrical Boxes
I see a lot of information on sealing plastic electrical boxes but not on sealing the standard electrical box with a mud ring and conduit. There are a lot of holes and seams in the metal electrical boxes and I was thinking of using either the aluminum tape used to seal duct work or mastic spread on heavy to seal all the holes and seams. Or is there a better way to seal them? This is new construction to I have access to the back of the box.
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