Model 71 Spiral Staircase

Custom Made Spiral Staircase
Light and Open Appearence
Customise your design
Modern or Traditional appearence

Model 71 Spiral Staircase

The Model 71 Spiral Staircase stands out as one of our most sought-after designs. Each staircase is bespoke, crafted to specific floor-to-floor heights and diameters to fit its designated space perfectly. With a vast selection of materials and finishes, it can be tailored to meet customer specifications as a standout feature staircase. Its robust construction and the aesthetic appeal of cantilevered timber treads make it ideal for all internal domestic settings and certain smaller commercial projects.

Customisation is key, with each staircase meticulously designed to ensure proper alignment with entry and exit points, integrating seamlessly with the environment and the movement between floors. This level of detail is crucial and is addressed during the design phase. The manufacturing process typically spans 8-9 weeks following the approval of the drawings.

Every spiral staircase includes a top platform that aligns flush with the upper floor, and we often provide matching landing balustrade to safeguard the floor opening, tailored to the exact length or curvature needed.

The structure of the spiral staircase features a sequence of interlocking barrels and treads that fit over the central column. The wooden treads extend directly from the column, contributing to a light, airy ambiance.

1100mm 1200mm 1300mm 1400mm 1500mm 1600mm 1700mm 1800mm 1900mm 2000mm

Custom Made Diameters

Choice of Materials

The model 71 spiral staircase is always constructed in the same manner as detailed above. Given the vast selection of materials, each stair supplied can appear very different to the next.

Tread Options and Finishes

The steps are produced in block laminate wood which are solid sections bonded together against the grain for strength. For stability only hardwood is used for this model and is 40mm thick for diameters up-to 1700mm and 50mm thick for larger sizes. The wood is generally given a matt lacquer finish in the factory or oiled or is left untreated for customer finishing.

Handrails to choose from

50mm diameter wood – supplied in one piece
42mm diameter stainless steel (brushed or polished)
42mm diameter steel – powder coated any RAL colou

Centre Column finishes

Brushed or Polished Stainless Steel Barrels
Timber Barrels (to match treads)
Powder coated Steel Barrels

Balustrade Infill Options

For safety and to support the handrail there needs to be an infill between the step and the handrail to prevent falling. There are several options for this which can dramatically alter the appearance of the spiral and these are shown below. It should be noted that the horizontal bars are generally not permitted by building control being considered climbable.

Riser Infill Options

To comply with UK regulations the gap between the steps needs to be less than 100mm. This is to prevent a small children falling through the back of step. There are several solutions available with the model 71 spiral to comply with this regulation whilst still keeping the riser open and allowing the passage of light.

How It Works

The system is clamped and bolted together. A mild steel centre column is supplied which is eventually hidden by the treads and barrels.

Once the column centred & bolted down, the spiral is built up using interlocking cylindrical barrels and wooden treads. At the top of the spiral, the top platform is located which sits in line with the finished floor level. At the top of the centre column there is a larger threaded rod which passes trough the top platform. A large washer and bolt are fixed to this rod and wound down to tighten and clamp the barrels and treads together.

On the outer side of the spiral the treads overlap allowing a threaded bolt to be used to connect one step to the next. This threaded bolt is hidden within a newel or a spindle.