Shallow electrical boxes and exterior 2×4 walls
I’ve been lurking and reading for a long time and I’ve yet to find the recommendation of using shallow electrical boxes (17 and 18 cu in) when renovating an older house with 2×4 exterior walls. With a regular box there isn’t even a 1/ 2” behind the electrical boxes for insulation. I think there is a reduced sized electrical box that might give you just over a 1/2” but even still that’s not very much insulation behind an electrical box. Why don’t more people use the shallow electrical box so that you can get a full 2” of insulation behind a box.
This isn’t the super small electrical box that is only 8 cu inches but the bigger box that has a door and an extension to the side and gives a respectable 17 cu inches. They are usually used in shallow basement walls or things like that. They come in remodel and new construction varieties. They would be perfect if they came in draft tight models but I haven’t see any like that.
The only disadvantage I see is it’s a little harder to air seal but not horrible. I haven’t wired outlets in them so I can’t say if it’s much more difficult to wire but they don’t seem to be that tight.
What’s everyone’s thoughts?