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It sound's like a dumb question but I it was asked of me the other day. We were doing a new construction addition and the customer wanted some outdoor outlets installed. We did the usual 1900 box with a large extension ring. Afterwards the customer asked "How does that seal from the elements and insects. The box has holes in it and a insect could get through the bubble cover and into the walls. Cold air the same way." I explained to her about the gasket and how it's also sealed from the outside with the siding.

She does bring up a decent point that I have never thought of. Metal boxes are code here so that's what I have to work with. I thought a remodel would work but sucks if you ever want to pull though again. This is just how I always did it and always figured "The caulk on the outside and insulation on the inside will be enough".

How has everyone else handled this? WP boxes aren't an option because of looks. I was thinking some sprayfoam encasing the junction box from the inside. (Inside the house not the box. I did a service call where a homeowner did that....what a nightmare!)
 

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Who in their right mind uses a dry location box out doors? Either use a proper weather resistant box surface mount.
Or use an old work cut in box.
 

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Who in their right mind uses a dry location box out doors? Either use a proper weather resistant box surface mount.
Or use an old work cut in box.

He said it is a new addition.

Im sure he roughed it inside the wall.
 

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The eighties is back thataway's to the left. We've had cans of expanding spray foam for two or more decades now.
 

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Arlington makes a few items to address this, but if you are down to rough wall, the stucco or clapboard people will usually flash it, and sometimes caulk it.

If you are adding a new box, again look at Arlington catalog. The bubble cover does let insects under the cover, but the receptacle and coverplate with gasket is in the way of further intrusion.

Around the outer edges of an old work cut-in, its beauty vs. efficiency. I let them decide and live with outcome.
 

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Mad Skills
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Who in their right mind uses a dry location box out doors? Either use a proper weather resistant box surface mount.
Or use an old work cut in box.

I didn't know an old work cut in box was rated for wet locations.

Got a link?
 

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Sorry but this is where you have to hold the clients hand and remind them that you need to install two, one in the front and one in the back,they get to hide them.

Then you can remind them that they should consider functional usuage as well.

You can show them some of the arlington products and comparable manufactured face plates.

You can pretty it up with silicon!
 
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