When you need a compact, robust run with one extra step over the S2N, the S3N short straight staircase in Craftsmans Pine is a neat fit. The configurator guides you through rise/going, 2R+G and pitch so the layout aligns with Part K principles (≤ 42°).

Layout & sizing

• Straight flight: 4 risers / 3 goings

• Rise per step adjustable 180–220 mm

• Overall width (strings): 600–1000 mm

• Total plan length is calculated live, including nosing overlap and 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)

Where it fits best

Ideal for split-level rooms, lofts, mezzanines and platform changes where a short, straight timber staircase is the simplest solution.

Compliance note: On-page checks flag pitch and 2R+G to support Part K principles. Final compliance depends on installed dimensions and site conditions.

Key specs

• Model: S3N — 4 risers / 3 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)