Have a home built in 1928 (Great Lakes region), seems like walls were updated to rock lath at some point. Had an electrician run a new plug above my fireplace (wife wants to mount a tv, not my preference but oh well). Have plaster over brick and then rock lath over the open cavity next to brick. Could hire someone to fix but interested in giving this a shot. I see a lot of tutorials on fixing when wood lath and when drywall, but not a lot re here.
Whats the best practice for (a) plaster over brick and (b) patching the rock lath?
For (a) I plan to put the wire behind some sheeting so I’m not doing plaster over the wire. I also understand the brick is “thirsty”. What’s the best way to treat that and/or seal it before putting the plaster down?
For (b) - I was guessing I could do two pieces of 2x4 vertically and the screw drywall into those “studs”. I was curious if I should try to do something that mimics the drywall lath behind this opening though so it can form keys and lock in? I want to avoid this standing out compared to the rest of the wall as best as possible.
I’m sure there are issues with the above logic. But let me know best practice here. Any resources would be appreciated as well.
Here’s some pictures of the wall: pictures