What limestone thickness and finish are recommended for Monolithic Landscape Steps, Bullnose Stair Treads, Risers & Anti-Slip Grooves?

We recommend 30mm / 50mm Treads (1200–1500×350mm) or 150×350mm Solid Block Steps in Bush-Hammered / Sandblasted & Brushed with CNC Grip Grooves finish, achieving AS 4586 P5 / ADA & UK Building Regs Part M Visual Nosing Contrast.

What substrate and adhesive system should be used for Circulation & Hardscape?

Cast-in-place reinforced concrete stair stringers bonded with full-bed C2S1 structural adhesive and 1% forward drainage pitch per tread. Finish with High-traffic penetrating sealer resistant to foot-traffic abrasion and de-icing agents.

Application Guide · RW-TYAPPL-0108 · Circulation & Hardscape

Monolithic Landscape Steps, Bullnose Stair Treads, Risers & Anti-Slip Grooves

Precision CNC fabrication of one-piece stair treads with bullnose, pencil-round, or rock-pitched nosings and dual 5mm abrasive/grooved anti-slip safety strips.

1. Structural & Surface Specification Matrix

Engineering Parameter	Mandatory Architectural Specification
Application Category	Circulation & Hardscape (RW-TYAPPL-0108)
Recommended Surface Finishes	Bush-Hammered / Sandblasted & Brushed with CNC Grip Grooves
Calibrated Thickness & Profile	30mm / 50mm Treads (1200–1500×350mm) or 150×350mm Solid Block Steps
Slip & Safety Compliance	AS 4586 P5 / ADA & UK Building Regs Part M Visual Nosing Contrast
Substrate & Mortar Assembly	Cast-in-place reinforced concrete stair stringers bonded with full-bed C2S1 structural adhesive and 1% forward drainage pitch per tread.
Surface Sealing & Protection Protocol	High-traffic penetrating sealer resistant to foot-traffic abrasion and de-icing agents.