
Steel Staircase Repairs London
External staircase repairs across London — worn treads, corroded stringers, loose fixings and failed welds put right on site by our own welding and installation teams.
Mobile 07958 638 849 · Office 01582 611648 · info@prontowelding.co.uk
Typical steel staircase repairs
We attend the property, assess the problem and carry out the repair work on site wherever the structure allows.
- Tread replacement in open-grid, chequer plate or solid steel
- Nosings, anti-slip inserts and worn edges
- Stringer repairs where section has been lost at tread welds
- Half-landings, landing frames and support brackets
- Base plates and foot fixings corroded into concrete or tarmac
- Newel posts, handrails and intermediate rails
- Straightening of impact-damaged flights
- Replacement flights fabricated to survey
A fleet of mobile workshops, not a man with a van.
Pronto Welding Ltd runs 25 fully equipped mobile workshop vans with experienced installation and welding teams — which is why we can survey, fabricate and fit in the same visit.
25 fully equipped mobile workshops
Not one person with a welder in a car boot. Each van is a workshop set up for welding, cutting, drilling, alterations and installation.
Teams already working in London
We run crews across London and the South of England every day, so we can often respond at relatively short notice.
40 employed welders and installers
Directly employed, insured and CHAS accredited — no agency labour and no subcontracted welders turning up in our place.
Surveyed to the millimetre
Older London staircases are rarely square. We measure each tread and going on site so replacement steel drops straight in rather than being forced to fit.
Access stairs kept in service
For retail, industrial and residential blocks we programme staircase repair flight by flight, so tenants and staff keep a usable route while work is underway.
Slip resistance and compliance
Worn treads are the most common cause of accidents on external stairs. We replace with grip-tread grating or apply anti-slip nosings, and bring guarding heights and gap spacings back to a sensible standard.
Protection that lasts
Repairs are needle-gunned or wire-brushed back to sound steel, primed with a zinc-rich primer and top-coated, or hot-dip galvanised where we fabricate new flights off site.
How a staircase repair progresses



Covering Greater London
Steel staircase repair carried out throughout London, including Camden, Islington, Hackney, Southwark, Lambeth, Wandsworth, Westminster, the City, Croydon, Ealing, Brent, Barnet, Enfield, Newham, Greenwich, Bromley, Richmond, Hounslow and the surrounding M25 corridor. If your property sits inside the M25 — and in most of the South East beyond it — we can get a team to you.
Send us the details and a few photographs.
Six boxes, not twenty. The quickest route is photographs of the damage — most repairs can be priced from a picture and a postcode.
Steel Staircase Repairs London — common questions
Can you replace just a few treads?
Yes. Individual treads are cut out and replaced without dismantling the flight, which is usually the cheapest way to keep an external staircase in service.
Do you fabricate complete replacement staircases?
We do. Flights, landings and balustrades are fabricated to our own site survey and installed by the same teams.
Will the stairs be usable during the work?
In most cases yes — we work in sections and provide temporary handrails or barriers as needed.
