Project Portfolio: Curved Basement Access Staircase [Central London]

Project Overview

• Client: Guy, Residential Project

• Location: Central London

• System: Bespoke Curved External Staircase

• Features: Durbar Non-Slip Treads & Integrated Street Railings

• Service: Full Turnkey (Survey, Design, Manufacture & Installation)

Precision Engineering for Central London’s Architecture

When Guy approached us with a requirement for basement access in the heart of London, the challenge was the building’s footprint. The staircase needed to follow the organic curve of the existing wall while transitioning seamlessly from street level.

• Curved Geometry: Unlike standard "off-the-shelf" stairs, this system was engineered in our Sheffield workshop to mirror the building's flow.

• Industrial Durbar Treads: We utilized durbar (checkerplate) non-slip treads. This offers a highly durable, cost-effective alternative to traditional cast iron, providing a secure descent into the basement in all weather conditions.

• Seamless Balustrade Integration: A key detail was the termination of the handrails. The staircase balustrade was designed to bolt directly into the existing street-level railings, creating a unified architectural perimeter.

• In-House Installation: To ensure the curve sat perfectly against the masonry, the project was installed by our own specialist fitters. At Dio-Met, we never use subcontractors; our Sheffield-made quality is matched by Sheffield-trained installers.

Technical Expert Insight: Structural Integrity in Curved Steel

Engineering a curved staircase requires complex calculations to manage torsional forces. Unlike a straight flight, a curved stair wants to "twist" under load. Our solution involves decades of research into structural bracing and plate thickness. By using a bespoke-rolled stringer and securing it with high-tensile fixings, we ensure the stair meets BS 1090 and UKCA certification requirements. This isn't just a fire escape; it’s a structural asset that adds significant value to a Central London property, providing safe, permanent access that is legally compliant and built to last for generations.

Explore More from Dio-Met

Specialized Metalwork & Access Solutions:

• Straight External Stairs: Robust, galvanized solutions for simple basement or garden access.

• Spiral Staircases: Space-saving vertical access for tight urban environments.

• Walk-on Glass Floors: Bring natural light into your new basement space.

• Wine Cellar Hatches: If your basement is for storage, see our world-leading hinged glass doors.

Contact the London Staircase Specialists

As one of the UK's leading manufacturer of bespoke metalwork, we serve homeowners, architects, and developers across London. Our full-service approach ensures your project is handled by experts from the first measurement to the final bolt.

• Email us: sales@diometonline.co.uk

• Call: 0114 243 9009

• See All Projects: Browse our full gallery of staircases, balconies, and glass floors.