A metalworker or fabricator designs, fabricates and installs structural and decorative metalwork for buildings. This covers a wide range of work from bespoke steel staircases and glass balustrades to ornamental railings, security grilles and architectural ironmongery. Many fabricators have their own workshop where metalwork is manufactured before being brought to site for installation. The trade is not statutorily regulated but the British Constructional Steelwork Association (BCSA) and CSCS card scheme provide quality benchmarks. A structural engineer may be required to sign off metalwork that forms part of the building's structure.
What they do
- Fabricate and install steel, stainless steel and wrought iron staircases
- Design and install balustrades, handrails and guard rails to Part K
- Fabricate bespoke gates, railings and fence panels
- Install balcony structures and Juliet balconies
- Manufacture and fit window and door security grilles
- Produce structural fixings, brackets and lintels
- Fabricate bespoke architectural metalwork and signage
- Weld, cut, drill and finish metalwork to specification
- Apply protective coatings - galvanising, powder coating and paint
When you need one
A metalworker or fabricator is needed whenever bespoke or structural metalwork is required on a building project.
Typical costs (UK, 2025)
| Job type | Typical cost |
|---|---|
| Day rate | £180 - £320 / day |
| Steel balustrade (supply + fit, per metre) | £150 - £400 / m |
| Bespoke gate (supply + fit) | £600 - £2,500 |
| Steel staircase (supply + fit) | £2,000 - £8,000+ |
| Wrought iron railing (supply + fit, per metre) | £100 - £300 / m |
| Hourly rate | £40 - £65 / hr |
Costs vary significantly by material, complexity and finish. Stainless steel commands a premium over mild steel. Always obtain at least two quotes from fabricators who have visited the site and seen the drawings.
Qualifications to look for
A CSCS card is expected on all but the smallest domestic projects. For metalwork and steelwork trades, NVQ Level 2 or 3 in Fabrication and Welding or Architectural Metalwork is the standard qualification underpinning the card.
BCSA membership indicates a steelwork contractor that has met quality and capability standards. For structural steelwork, BCSA members are assessed for technical competence. Check membership at steelconstruction.org.
For structural welding on load-bearing elements, look for certified welders holding CSWIP (Certification Scheme for Welding and Inspection Personnel) or equivalent qualifications. This is especially important for staircases and balcony structures.
How to find a reputable metalworker or fabricator
Frequently asked questions
What materials are used for balustrades?
Steel, stainless steel, aluminium, glass, timber and cast iron are all common. Steel is typically the most cost-effective for structural balustrades. Stainless steel is preferred for coastal or harsh environments where corrosion resistance is important. Glass infill panels are popular for minimising the visual impact of balustrades on views.
Do balustrades need to meet Building Regulations?
Yes. Part K of the Building Regulations requires balustrades to be at least 1100mm high above ground floor level and 900mm above stairs, and to resist specified lateral loads. The designer and installer should provide confirmation of compliance, and for commercial projects a structural engineer's sign-off may also be required.
Do I need planning permission for gates?
Gates over 1m high on or adjacent to a highway, or over 2m high elsewhere, require planning permission. For listed buildings, listed building consent is also required regardless of height. Always check with your local planning authority before fabrication begins to avoid costly alterations.