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Small invisible stringer floating u shape modern stairs
  • Small invisible stringer floating u shape modern stairs
Small invisible stringer floating u shape modern stairs

Small invisible stringer floating u shape modern stairs

Model: PY-S21

The structure consists of 12mm(6+6mm) steel stringers either side of hardwood treads put directly into the stringer. 

These stringers are powder coated black, white, sliver and grey or supplied brushed or polished stainless steel.

Treads are either supplied matt varnished, oiled or stained in the factory and sometimes left untreated to be stained on site.

The balustrade itself is in-filled by either:

Vertical Steel Spindles

Horizontal Stainless Steel Rails

Framed Glass Infill Panels With Stainless Post

Frameless Glass Panels Bolted Directly To The Side Of The Hardwood Treads



Product Details
Floor to floor heightCustomized
Risers150-200mm
Stair WidthCustomized
Clear Tread WidthCustomized
Tread Type40mm Oak – Painted
Balustrade Type12mm tempered clear glass
Handraildiameter 50.8mm fascia mounted 304s.s handrail-Brushed
Stair Stringer300*12mm(6+6mm) U Channel 
Finish of SteelGalvanized + Powder Coated Carbon SteelBrushed/Polished Stainless Steel
AdditionalAll main components can be customized


To keep the flight open and light whilst adhering with the 100mm gap rule – there are the following solutions:

· Steel Riser Bars

· L shaped treads with timber downstand

· Half Glass Riser Pieces

· Full Glass Riser

· Full closed risers with timber


The riser height, pitch angle and going depth are created specifically to suit the opening, staircase configuration and floor to floor height of the project. The stair is ‘dry’ fitted in the factory before dispatch to ensure all parts fit together.