Sculptural Staircases
Single Sheet Steel Structure
This staircase is crafted from a single, continuous sheet of steel with a thickness of 5/16″, offering a unique visual impact. With an 8-foot diameter and 11-foot height, its minimalist design creates a modern, refined presence in any hospitality setting.
The solid wood steps are paired with LED on the side, casting a soft glow that highlights the structure’s elegant form. The handrail is integrated as a flat forming element to maintain the staircase’s continuous design.
Triple Loop Helix Staircase
with Copper Finish
The Triple Loop Helix Staircase is the latest Marretti creation, designed to become a monumental centerpiece for luxury hospitality environments.
Its fluid, sculptural form captivates attention, while the rich copper finish adds warmth and sophistication to any space.
This design masterfully juxtaposes sleek marble steps with the bold, copper-clad guard structure, creating a striking visual dialogue between texture and form.
Silver Sterling Coated Structure
This staircase features a sleek box structure crafted from polished stainless steel, finished in silver. The design highlights rounded corners on the underside, seamlessly flowing with the natural contours of the staircase.
The external railing consists of 3/8” + 3/8” curved ultra-clear structural glass, recessed into the framework for a clean, minimalist look. On the interior side, a polished stainless steel convex helical band, also silver-coated, is paired with a flat handrail that combines comfort with style.
The steps are made from solid walnut wood, and are illuminated by integrated LED lighting on the underside, adding a soft, modern touch to the design.
Double Loop
Bronze-Cladding
Helix Staircase
This helix staircase features a 6ft-wide opening, revealing the smooth texture of its first three marble steps from afar.
The 3ft tall boxed structure is finished with bronze-cladding, transforming the staircase into a sculptural showstopper within the hospitality space.
LED lights can be incorporated in the handrails, which can be recessed or visible.
Glossy RAL Color
Helix Staircase
This helix staircase features 3 1/8″ thick boxed stringers which provide a robust foundation, complemented by handrails crafted from circular tubing with a 1 1/2″ diameter, coated in a layer of oxidized bronze. The steps and risers find their support in press-folded iron sheets, arranged in a ribbon-like structure, creating a visually seamless ascent.
A distinctive feature of this staircase is its continuous slide at the lower part, elegantly reconnecting the two lateral structures. The entire structure is unified into a monolithic block, skillfully concealing any visible fastenings or joints. The glossy red resin, applied on-site by a specialized artisan, further enhances the staircase’s aesthetic appeal. Versatility is a key aspect of this design, as the structure can be tailored to various preferences. Options include polished or satin stainless steel, gold-plating, or a coating of oxidized bronze. The steps offer a choice between different wood essences like beech, oak, walnut, or teak.
Helix Staircase
in Blackened
Steel Roll
The interior structure of this helix staircase is crafted from a 2-inch thick boxed system of Hot Rolled Blackened Steel, offering a bold, robust aesthetic.
The exterior is finished with 4-inch thick bronzed brass. The recessed handrail, integrated into the structure, enhances its sleek profile, with LED lighting placed both within the steps and along the handrail for a subtle, inviting glow.
