Technical requirements relating to design, construction and installation of spiral staircases.


The design of all staircases, spiral or otherwise, is governed by Part K of Building Regulations. However, paragraph 1.21 of Part K states that spiral and helical staircases comply with Building Regulations if they are designed to comply with British Standard BS5395 Part II (Code of Practice for the design of helical and spiral stairs 1984).

In essence this means a greater degree of flexibility in design than using the criteria for tapered treads laid down in Part K, particularly with regard to intermediate and floor level landings, inner goings and numbers of risers per flight. In addition to this, Parts B (Means of Escape) and M (Access for Disabled) of Building Regulations also apply to spiral stairs in certain situations. External stairways over six metres in height may also require weather protection, such as balustrade panels and canopy roofing.


Learn more about the building regulation categories


Please consult with our Technical Department for further advice on all aspects of Building Regulations. We strongly recommend that all customers liaise with their local authority Building Control department or District Surveyor to ascertain the exact requirement for the individual situation.

If you wish to discuss any current or future projects without obligation please contact us

Technical aspects

  • Design
    Spiral Uk

    All our staircases are individually designed using the latest CAD 3D technology, combining close liaison with client, contractor and consultants throughout every project.

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  • Manufacture
    Spiral Uk

    All Spiral UK staircases are produced in our purpose designed factory and are subject to strict quality controls throughout all operations.

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  • Installation
    Spiral Uk

    We offer a fixing service throughout the UK and Republic of Ireland for all our products, which normally includes site surveys and a visit by one of our installation staff prior to work commencing on site.

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