Spiral and Helical Staircase Soffit Formers

The construction of cast in-situ concrete spiral and helical staircases can prove challenging without the use of the appropriate formwork. Bespokely manufactured formers can allow the complex geometry of the staircase to be created, whilst also achieving a soffit finish of sufficient quality to be left exposed. Each former is designed to meet the specific requirements of the project, including the size, shape, finish and number of re-uses required. Based upon this information our designers will select the most appropriate material for each former and create a 3D CAD model for approval. 


  • Manufactured to meet project specific requirements
  • Available in a wide range of materials
  • Re-usable where staircases or flights between floors of the same size, shape and profile are required
  • High quality, exposed concrete finishes achievable

We can also provide moulds for precast concrete spiral and helical staircases, please see the Patterns & Moulds section of our website for further details.

Once approved, the 3D CAD model can be converted in to CAM data allowing accurate manufacture of the staircase or soffit former via a range of technologies dependent on the selected material. Spiral staircase formers are manufactured using a wide range of materials from Filcor (Expanded Polystyrene) through to Glass Reinforced Plastic (GRP). 


Used for the construction of cast in-situ reinforced concrete spiral and helical staircases and soffits.


Please contact the Cordek Project Design Team on T: 01403 799600 / projectdesign@cordek.com for further assistance when determining the suitability of this formwork system

Contact our Project Design Team to discuss your requirements

ProjectDesign@cordek.com01403 799600

Find your nearest Technical Advisor

For international enquiries please contact Peter Blanchard

Or contact Cordek Head Office