Electrical box mounting depth?

[Skooterj]

So, I know how to mount a box if I'm going to use drywall or 1/2" plywood for my interior garage walls, but what about if I use steel? Mount them flush with the studs?

 

[larry4406]

?

the box offset equals the thickness of your finishing (wall) surface. Metal stud vs wood stud shouldn’t matter.

 

[Skooterj]

Not metal v. wood stud. Metal v. wood/drywall walls. Metal is like 29g thick (0.0136") but has the ridges v. 1/2" drywall/plywood.

 

[ripperd]

Going to have to plan your layout. If the ridge is going through the outlet, the box is going to have to be flush with the ridge. If the box is going to be entirely in the flat valley, then yeah, at 29g just mount it flush with the stud.

 

[ripperd]

Or

1. just mount them all so they will be flush with ridges, if you don't know where the ridges will end up.
2. Buy adjustable boxes. there is such a thing. https://www.homedepot.com/p/Carlon-...with-Adjustable-Bracket-B121ADJ-40R/202077339

 

[Dagny]

put plywood with a j around it

 

[egdede]

Or

1. just mount them all so they will be flush with ridges, if you don't know where the ridges will end up.
2. Buy adjustable boxes. there is such a thing. https://www.homedepot.com/p/Carlon-...with-Adjustable-Bracket-B121ADJ-40R/202077339

These are great in general. They should be considered mandatory when you are planning for tile.

 

[nadogail]

If find that you have set them too deep; investigate "Mud Rings".

 

[rburke65]

This is why I like my smooth walls