The first step in combining the two spaces was to provide temporary support for the ceiling and remove the wall in preparation for installation of a flush beam.
The double-LVL and steel flitch beam was fastened together with 1/2-inch-diameter bolts 16 inches on-center.
The engineer's plan called for steel reinforcement — plate steel and C-channel — to be bolted to the existing floor joists.
The old subflooring was replaced with 3/4-inch AdvanTech T&G sheathing glued and screwed to the framing.
Carpenters troweled thinset onto a layer of 1/2-inch plywood installed over the AdvanTech sheathing.
The surface was skim-coated and edged with dams and a perimeter expansion joint in preparation for electric heat mats and self-leveling underlayment.
Laticrete's electric heat mats are designed to be cut to fit in the field and have a self-adhesive backing that holds them in place; tape and thinset are also useful to hold down edges and wiring connections.
To anchor the hanging peninsula cabinet, a crewmember fastens double 2x6 cleats to the ceiling framing with structural screws and glue.