I hired someone (so much regret) to mount a tv for me and they notched the studs of the load bearing wall for the cabling. I don't have a picture of the notch but I have a picture of the mounting and the dry wall before it went up. http://imgur.com/a/ACe96
On the last picture you can see putty on the left hand side and that is where the notch is. This notch is on 4 studs that are together side by side. Studs are 5.5 inches deep. The notch is uneven, 2 inches max depth and 1 and 3/8 inches minimum depth.
This is a newly constructed multiunit building in Bay Area, CA. That tv was mounted on a second floor of a wall that starts on the first and goes to the 3rd floor. There is a bedroom right above the living room where the wall is.
What do I do?
Best Answer
user71123, With the 2x6's notched uneven, you won't get optimal support for your tv. The 1 3/8" notch is fine, but I wouldn't go deeper. You'll want to sister in (along side) your existing studs with 30" 2x6 blocks placed above and below the notched studs. In other words your sister blocks should be placed so the notched part of your existing studs hit center of sister blocks. Then you can cut new notches for your tv mount.
I know it may be a lot of work since the drywall is already hung. The only other advice I can give is to return your tv mount, and buy one that's suitable for hanging tv's without notching, unless your local codes won't permit that type of tv mount. If permitted, so you can use a mount without notching, then you'll have to adjust placement on other studs or even a different wall. Good luck