White Plains Premier Drywall builds the demising and shaft-wall systems that divide tenants and enclose vertical chases in commercial buildings. These walls carry fire ratings, acoustic requirements, and, in the case of shafts, must be built from one side, so they demand the specialized C-H stud and shaftliner systems the assembly calls for. We frame and board them to the listed assembly, carry them tight to the deck, and detail the penetrations so they perform. Demising and shaft walls are code-critical construction, and we build them to pass inspection and hold their rating.
The walls that separate one tenant from the next are almost always rated and often acoustically specified as well, because tenants expect both fire separation and privacy. We frame and hang the specified layers, carry the wall tight to the structure above, and treat the joints to the rated standard. Building the full assembly, rather than stopping at a dropped ceiling, is what keeps the separation continuous.
Elevator shafts, stair enclosures, and mechanical chases often must be built from the occupied side, which is what the C-H stud and one-inch shaftliner panel system is designed for. We install the shaftliner into the C-H studs and finish the exposed face to the rated assembly. This system delivers the required fire rating for a shaft that can only be accessed from outside it.
A demising or shaft wall only performs if it is continuous from floor to deck and sealed at every penetration. We carry the assembly tight to the underside of the structure, firestop the penetrations with listed sealants, and detail the head-of-wall to allow structural movement without breaking the rating. Those details are what carry the wall through inspection and keep it performing in service.
For demising and shaft walls, White Plains Premier Drywall covers White Plains, NY, Valhalla, Harrison, Mount Kisco, and Purchase.