Kompact – Modular Spiral Stairway

Kompact Stairs - Black

Covered by a worldwide patent, Kompact is the only modular spiral stairway with adjustable rise, going, height, depth and rotation. Its total flexibility allows endless stairway configurations, with 1 or 2 one quarter turns (L or U) to fit any space. The kit comes with 13 risers (12 treads) and internal railing. The going is adjustable between 7 and 8 inches and between 8 and 10 inches depending on configurations. The riser is adjustable between 6 and 9 inches.With the purchase of one or more additional tread kits this spiral staircase can reach a height of 146 inches. The treads are clear sealed solid beech with metal supports and matching balusters and accessories. The staircase handrail is solid beech. In place of a pony or half wall along your top floor or opening, balcony rail kits of identical materials and finish are available to complete the contemporary appearance of your spiral staircase.

Kompact modular spiral stairway – Photo Gallery


The height of the staircase is adjustable from 88 inches to 119 inches, and with additional riser kits a maximum height of 147 inches is obtainable. Kompact kits are available in 2 widths, 29″ or 35″ and can be turned left or right.

The actual tread length is 27 1/2″ x 10 1/2″ deep, or 33 1/2″ x 12 1/4″ deep and are 1 5/8″ thick. Metal is 12 gauge steel. Handrail is beech wood 1 3/4″ diameter.

The Kompact modular spiral stairway has an upright floor support column that is used under either tread 5,6 or 7. The base attachment and header attachment can be mounted into wood or concrete. Anchors for concrete are supplied.

Kompact Modular Staircase Kit

Available Across CanadaStair Kit Type: Modular Staircase

Price: Request A Quote

Manufacturer: Arke

Colours Available: Black, White or Grey

Assembly Instructions: Kompact Installation Guide (pdf)

Assembly Videos: Part 1Part 2Part 3

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