New Rochelle Drywall Pros builds the demising and shaft walls that separate tenants, units, and vertical chases in commercial buildings. These are the walls that carry fire, smoke, and sound ratings and run full-height to the structure, so they demand correct framing, the specified board, and precise joint and head-of-wall detailing. We frame and finish tenant and unit demising walls, corridor and party walls, and elevator, stair, and mechanical shaft walls to their listed assemblies. Getting these separations right is central to a building passing inspection and functioning as designed.
Demising walls separate one tenant or unit from the next and almost always carry a fire and sound rating that requires full-height construction to the deck above. We frame these walls to the specified stud gauge and spacing, hang the required single or double layers of Type X, and detail the head-of-wall with rated firestop. Carrying the wall tight to the structure is what makes the rating and the sound separation continuous.
Elevator, stair, and mechanical shafts are enclosed with shaft-wall assemblies framed from C-H studs that receive one-inch shaftliner panels, faced with layers of Type X on the occupied side. Because the shaft is usually built from one side, the C-H and shaftliner system is designed for exactly that condition. We build these assemblies to the UL listing so the vertical separation holds its fire rating.
Rated corridor and party walls tie the building's egress and separation strategy together and often run long, uninterrupted lengths. We keep the framing straight and plumb across the full run, treat the joints to the rated standard, and firestop every penetration. Consistent construction over the length of the wall is what keeps the rating intact from end to end.
Demising and party walls usually carry an STC target as well as a fire rating, so we build in the sound detailing the spec calls for. That can mean mineral wool in the cavity, an additional board layer, resilient channel, and acoustic sealant at the perimeter and penetrations. Sealing and decoupling the assembly is what lets it hit its rated STC in the field, not just on paper.
Demising and shaft walls take our crews from New Rochelle to Harrison, Mamaroneck, Larchmont, Rye, and Port Chester.