When your project calls for a longer straight flight staircase without turning, the S9N in Craftsmans Pine provides a stable, accurate run that’s easy to install and finish. Our configurator helps you set rise, going and pitch in line with Part K principles (target ≤ 42°), gives live 2R+G guidance, and calculates total plan length including the nosing overlap and riser thickness—so you can confirm fit before checkout.

Layout & sizing

• Straight flight: 10 risers / 9 goings

• Rise per step adjustable 180–220 mm

• Overall width (strings): 600–1000 mm

• Total plan length shown live (includes nosing overlap + riser thickness)

Timber specification

• Strings: 32 mm EdgeLam Engineered Pine

• Treads: 22 mm EdgeLam Pine

• Risers: 12 mm plywood as standard (upgrade to Pine; thickness auto-set by width)

Ideal applications

A dependable choice for lofts, mezzanines, garage conversions, and split-level refurbishments where a short straight flight of wooden stairs is the cleanest answer.

Compliance note: On-page checks flag pitch and 2R+G for guidance; final compliance depends on installed dimensions and site conditions.

Key specs

• Model: S9N — 10 risers / 9 goings

• Rise per step: 180–220 mm

• Width range: 600–1000 mm

• Pitch target: ≤ 42° with 2R+G feedback

• Strings: 32 mm EdgeLam Pine

• Treads: 22 mm EdgeLam Pine

• Risers: 12 mm plywood (Pine upgrade available)