New York City Duplex – Modern Helical Spiral Stair
With space considerations top of mind, designing, building, and installing staircases in New York City properties can be challenging. For this duplex, we designed a tight double-helix spiral stair with only a 2-1/2" inside radius. The bottom of the soffit is treated like a high-end mega motor yacht with smooth-as-silk fiberglass.
This style of staircase has become increasingly popular in residences where space is at a premium and the design of the stair is important to the overall aesthetic. Perfect for city homes everywhere.