New Rochelle Drywall Pros builds Type X and Type C fire-rated assemblies to the UL listings that commercial codes require. Fire-rated construction is not simply thicker board, it is a specific 5/8-inch panel installed as part of a tested, listed assembly with rated joint treatment and firestopped penetrations. In commercial buildings the corridors, stairs, shafts, demising walls, and mechanical rooms all carry a rating that has to hold in the field. We hang and finish these assemblies exactly to their UL numbers so they perform to their listed rating and pass inspection.
Type X board has a glass-fiber-reinforced core that resists burn-through, while Type C is an upgraded core specified for certain higher-rated ceiling, floor-ceiling, and column assemblies. We hang the exact type the UL listing calls for rather than substituting standard board or the wrong core. Using the specified panel in the specified number of layers is the difference between a wall that holds its rating and one that only looks the part.
Every rated wall and ceiling on a commercial job references a UL or comparable listed assembly, and the rating only exists if the whole assembly is built as tested. We match the stud gauge and spacing, layer count, fastener pattern, and joint treatment to the referenced listing. Building the complete assembly rather than just the board is what makes the rating real.
Rated corridors, exit stairs, and occupancy and area separations are the backbone of a building's fire strategy. We frame and hang the specified single or double layers of Type X, treat the joints to the rated standard, and carry the wall full-height to the deck where the assembly requires. Straight framing and correct board keep these long rated runs performing across their full length.
A rated assembly is only as good as its penetrations and joints, so we firestop pipe, duct, cable, and conduit penetrations with listed systems and treat head-of-wall and control joints to the assembly standard. Sealing every perimeter and opening keeps the barrier continuous. That detailing is what carries a rated assembly through inspection and lets it perform in an actual fire.
New Rochelle anchors our service area for fire-rated assemblies, which extends to Mount Vernon, Yonkers, Port Chester, Rye, and Larchmont.