Kwila / Merbau 30mm Stair Nosing

30mm Timber Stair Nosing

30mm thick solid timber stair nosing, designed to transition the stairs into your finished floor at the top of the stairs. See our stair configurator for custom floor finishes and custom strings to match.

Dimensions & Profile:

• Thickness: 30mm
• Width: 110mm
• Overhang/Nosing: 20mm
• Front Edge: Attractive 6mm pencil round nose profile
• Underside: Features a 20mm wide riser groove precision-milled to securely accommodate standard 18mm thick risers
• Floor Finish: Premade for a standard 12mm floor finish, with flexibility to be packed up using packers or cut down on-site to suit varying upper floor thicknesses

This nosing is designed for the top step of closed housed stairs (traditional enclosed designs with visible strings) or closed sawtooth stairs (cut stringer styles with invisible strings), providing a professional finish where the staircase meets the upper floor. It integrates seamlessly with our 30mm standard treads and 18mm risers for a cohesive look.

Key Benefits:

• Versatile adjustment via packing or cutting for custom floor fits
• Easy installation with pre-machined groove for quick riser fitting
• Smooth, sanded surfaces ready for your choice of stain, oil, or clear finish

Available in both 1m and 1.5m lengths to suit your project. All products are delivered raw, pre-finished sanded to 100 grit.

Kwila (also called Merbau) is a tough Australian and Southeast Asian hardwood that brings rich, warm colour to stair work. Freshly cut it shows golden to orange-brown tones that deepen over time into a handsome reddish-brown, often with small yellow flecks scattered through the timber. The grain is usually straight to interlocked with a moderately coarse but even texture, giving a clean, solid look once finished. Dense, hard and highly durable, Kwila stands up well in high-traffic areas and is a reliable choice for treads, risers, stringers, handrails and balustrades. It’s the go to choice for affordable external timbers as it naturally deters termites and is less susceptible to water ingress.