We had removed a planter box in this Living room stripped it down to the joists then glued & screwed 5/8" plywood to the joists. Glue as well for the Entertainment center walls covering the studs with 1/2" plywood then concrete board over that.
The electrical, CAT6, & COAX has been installed through an 1 1/2" vinyl conduit, mostly to accommodate future component wiring.
Now we are installing the rock.
