ARCHITECTURAL STEEL STAIRCASES
Steelgram have over 50 years of experience producing high quality steel staircases for companies across the UK.
We offer a complete service, including bespoke staircase design, manufacture, and installation of your staircase in its location. We can also help with additional structural steelwork if required, for both internal and external staircases.
Our experts will create 3D drawings and complete all necessary calculations to ensure your project meets all building regulations.
Your staircases can be fitted with a range of steel handrail and balustrade options (including glass balustrade and perforated infill panels), as well as stair treads.
Choose between mild steel (galvanised or painted) and stainless steel.
STEEL STAIRS SOLUTIONS
STAIRCASE EXAMPLES
INDUSTRY SECTORS
Why Choose a Bespoke Steel Staircase?
Steel staircases are one of the main architectural steel fabrication elements used on buildings, and they consist of both the function/safety aspect as well as the design/aesthetical element.
Steel staircases offer several benefits over other materials, including a modern design, unrivalled strength, flexibility of production specifications, and simple installation processes.
They can consist of galvanised steel, glass balustrade, spiral staircases, and stainless steel.
We can provide straight staircases, modern staircases, spiral stairs, square staircases, and helical staircases. You can also choose from a range of different steel railings. We can also support with steelwork fabrications for balconies, and other building work.
Why Choose Our Staircase Fabricators
Need a feature staircase that actually lands on spec and on time? Here’s why clients across the UK come to us instead of rolling the dice with a general steel supplier:
- Architectural precision, not “close enough.”
Every stair is modelled in 3D before cutting – riser heights ±0.5 mm, stringer runs ±1.5 mm, treads in 8-10 mm plate built for 5 kN/m² live load. Welds hit 4 mm throat thickness, Category C fatigue-rated (BS 7608). The stuff stays solid long after fit-out’s done.
Fabricated in-house at our Sheffield facility for full quality control and UKCA compliance. - Timelines that hold.
We book your slot at design sign-off, order materials early, and fabricate everything in-house – no “waiting on the galvaniser” excuses. 50 m+ output per week, 0.8 mm laser accuracy, 7 m powder-coat bays. If you’ve ever chased a late subcontractor, you’ll get why this matters.
All projects are run under Constructionline Gold and CHAS Premium Plus safety standards. - Proven across sectors.
Offices (low-vibration isolation), hotels (concealed fixings), retail (overnight installs), high-end homes (finish perfection). We hit <3 mm mid-span deflection, L/500 stiffness, and finishes sharp enough for showroom lighting.
Our experience extends across showrooms, hospitals, and large retail refurbishments – anywhere structural integrity meets design intent. - Built-in compliance.
Fully certified to UKCA, BS EN 1090, and BS 5395 / Part K – every run checked, logged, and handed over with certs. Rise 170-190 mm, going 250-300 mm, balustrade 1100 mm, coatings 80-100 µm galvanised + 60-80 µm powder, giving 25-year C3 corrosion protection.
Backed by £10 million public liability and £2 million professional indemnity cover for your protection. - End-to-end accountability.
We handle design, fabrication, delivery, and installation nationwide. CSCS-certified crews, torque-testing at 50-60 N·m, install tolerance ±2 mm per flight, vibration <2 Hz amplitude. All backed by QA photos and documentation. One point of contact. No finger-pointing.
These pair great with our balustrade services.
Our Staircase Process
Want to know how the job actually runs? Five steps. No mystery.
- Design Consultation – 3-Day Turnaround
We dig through your drawings, call out tolerance traps (glass gaps, bolt lines, balustrade spacing ≤ 100 mm). Recommend 10-15 mm stringers, 25-35 mm nosings. Fix it now, not mid-build.
Our Sheffield design team works directly with your architect or engineer to meet site conditions and building regs. - Engineering & Digital Modelling – Tekla + AutoCAD Integration
We stress-test every joint: L/360 deflection (stringers), L/300 (cantilevers), 1.5× ULS load factors, bolts M12-M16 grade 8.8 torqued 60 N·m. You get clash-free IFC files within 5 days.
All engineering drawings are UKCA-compliant and verified under our in-house quality management system. - Precision Fabrication – Nothing Farmed Out
CNC plasma 20 m/min, ±2 mm jigs, 5-axis CNC (12 m radius), ±1 mm laser alignment. Welders to EN ISO 9606. Every flight dry-built in-house; no 10-15 % rework surprises later. 3-6 weeks end-to-end.
Fabricated in Sheffield using certified steel sourced from UK mills. CE/UKCA traceability maintained for every component. - Delivery & Installation – Modular, Fast, Clean
Pre-labelled sections. Modular system fits through doorways; craned parts rated 1.5 t. Components: treads 35-70 kg, stringers 250-400 kg. Grade A4 or 8.8 fixings. 2-3 days per flight, deviation < 2 mm.
Installed by our own site teams, accredited under CHAS Premium Plus and Acclaim (SSIP) for site safety and compliance. - Inspection & Handover – 48-Hour Closeout
Surface gloss measured 80 GU (paint) / < 20 GU (satin)**. You get certs, coating data, O&M pack. Building Control signs off first go.
Inspections completed by qualified supervisors, with full UKCA documentation included in every handover pack.
Our Steel Staircase Service Options
Fast-track fit-out or sculptural showpiece? Pick what fits.
| Package | Ideal For | Key Specs & Proof | Turnaround / ROI |
|---|---|---|---|
| Bespoke Architectural (Commercial) | Foyers, hotels, retail | Span ≤ 6 m, RAL 9005 Matt 80 µm / #320 grit stainless, handrail 42.4 mm concealed | 6-8 wks, design ROI < 12 mo |
| Premium Residential | Homes, penthouses | Cantilever 850 mm max, 12 mm stringers, 17.5 mm laminated glass (EN 12150)** | 92 % repeat clients |
| Spiral / Helical | Galleries, showrooms | Radius 1.2-3.5 m, rise 170-185 mm, balustrade 900/1100 mm, deviation < 1.5 mm | 8-10 wks |
| Structural / Fire-Escape | Compliance projects | 4 kN/m² load, >36 PTV wet, galvanised 85 µm, lifespan 25-30 yrs | Payback ≤ 24 mo |
| Design-to-Delivery Partnership | Developers, contractors | 10-20 units / phase, 98 % repeatability, cost -14 % per phase | 96 % retention |
All packages are available nationwide from our Sheffield HQ and delivered by fully insured installation crews.
FAQs
How do you guarantee Building Regs compliance?
All stairs built and certified to UKCA, BS EN 1090, BS 5395, Part K. Handrail loads: 0.74 kN/m (resi), 1.5 kN/m (comm). Full cert pack ready for inspection.
Can you work from my architect’s files?
Yes – DWG, Revit, IFC, aligned to ±0.25 mm. Clash-checks included. The model you see is the one we build.
Do you install and finish?
Always. 3-5 crew per flight, SSSTS supervisor. 15-25 treads/day. Bolt, level, torque, sign-off – same team that built it.
Steel stairs that arrive when they should, pass every check, and still turn heads – without the drama.