[stufisher1]

Here's the situation: adding a bar countertop about 5" higher than the kitchen countertops. It will rest on a 2X4 sheetrocked 4' wall which is at the back side of the lower cabinets. This wall is an L secured at one end to a wall, nailed into the floor and unsecured at the other end. I raised the wll to the appropriate bar height of 42".
It seems to me there will be a lot of pressure on the top of this wall when I put the korbels and granite countertops on it.
My question is: How can I support this wall to ensure it does not pull away from the cabinets?

[Stratmando]

If attached secutly to the wall, it shouldn't pull out. You mentioned on top of a sheetrocked wall.
If you are securing more wood on top of this, I would strip that top layer of drywall and have your wood to wood
Not drywall sandwitched between the 2.

[ma0641]

Put screws from inside the cabinet rear to align with the wall 2X4 and use a fender washer to spread the pressure point. The weight, if the wall is straight, will be born down, not out, so it shouldn't be pulled away.