The S5N adds a little extra run compared with shorter models while staying compact and easy to fit. Built in Craftsmans Pine, this straight flight is made to measure with on-page tools to help you set rise, going and pitch in line with Part K principles (target ≤ 42°). The calculator also shows 2R+G and computes total plan length, including nosing overlap and riser thickness.

Layout & sizing

• Straight flight: 6 risers / 5 goings

• Rise per step adjustable 180–220 mm

• Overall width (strings): 600–1000 mm

• Total plan length calculated 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)

Typical use cases

A practical choice for lofts, mezzanines, split-level rooms and platform transitions where a short, straight timber staircase provides a clean, reliable solution.

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

Key specs

• Model: S5N — 6 risers / 5 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)