Hong Kong duplex, village and villa owners love marble stairs for elegance, but stairs are high-use and safety-critical. Tread dimensions, slip resistance and stone grade must be right. This guide covers safe and beautiful marble stairs.
Tread & Riser Dimensions
Comfort depends on the run. Residential tread depth ~250–300mm and riser ~170–180mm feel safest; too narrow slips, too high is tiring. Marble treads are usually 20mm with a laminated or dropped edge for a sharper nosing. See the staircase guide.
Slip Resistance Is the Red Line
Polished marble is slippery; stairs must be treated — anti-slip grooves, metal/nylon nosing strips, or a honed/sandblasted matte face. Elderly or kids' homes need extra care. Check the R-value standard in the anti-slip guide.
Choosing the Grade
For stairs pick a stable, less wild mid white or beige marble — pretty yet crack-free. Prestige marbles with bold veins can feel dizzy on a run. Marble is softer than granite; reinforce tread backs with rods or back-net to avoid breaks.
Edge & Handrail Coordination
Nosing profile (egg, square) affects feel and safety — no burrs. Handrail-to-marble joints need clearance so metal will not scratch stone. Spiral stairs need precise layout.
Installation Points
- Layout and draw first — every tread size and joint;
- Flat, stable substrate fixed with stone adhesive;
- Apply slip treatment before install, not after;
- Protect finished stairs from later trades.
Measure & Lay Out First
Stairs involve dimensions, slip and structure — book a free on-site measurement and get a layout drawing before cutting.