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    20 Giltspur Street, London, UK

    GRP d² Dura Riser System for Game-changing Refurbishment Scheme

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    Project Overview

    As part of a high-profile redevelopment in London’s City district, Dura Composites was selected to design, supply and install GRP riser flooring systems at 20 Giltspur Street – a project widely recognised as a gamechanger in sustainable commercial retrofit. Led by BAM Construction Ltd, the scheme transforms a 1990s-built commercial building into a future-ready, low-carbon workspace for Norges Bank Investment Management.

    The development features a full structural reconfiguration, including the jacking and repositioning of entire floor slabs to introduce three new CLT floors within the existing volume. One of the most ambitious refurbishment strategies in the capital, the project reuses 80% of the existing steel frame, achieving an embodied carbon figure (A1–A5) of just 89 kgCO₂/m² – far outperforming the typical 150 kgCO₂/m² seen in conventional steel-timber hybrid builds.

    Driving down carbon and maximising existing potential.

    20 Giltspur Street is a blueprint for how modern construction can retain and repurpose existing assets while achieving best-in-class sustainability outcomes. Reusing the majority of the steel frame not only preserved the character and footprint of the original building, but also saved thousands of tonnes of carbon compared to new build alternatives.

    Aligned with this carbon-conscious approach, Dura’s d² Dura Riser system – the lowest carbon riser flooring solution available on the market – saved an additional 10,715 kg of embodied CO₂. That’s the equivalent of 32 return flights from London to Dubai, or the annual carbon absorption of 487 mature trees.

    An unexpected highlight of the works was the preserved section of a Roman Londinium wall in the lower basement area – an important archaeological feature which will be conserved and sensitively integrated into the final building design as a tribute to the site’s rich historical legacy.

    Dura Composites contributed to this landmark achievement with the supply and installation of our patented d² Dura Riser system, providing fall protection across 82 separate riser voids throughout the building, including an exceptionally large 7 metre by 2 metre riser adjacent to the newly repositioned lift shafts on the first floor.

    Lightweight yet robust, the d² Dura Riser system offers exceptional strength-to-weight performance and is fully recyclable – including the panels, supporting steelwork, and fixings packaging. Designed with M&E integration in mind, service penetrations can be made on site without the need for hot works, helping to accelerate programme delivery and coordinate seamlessly with other trades.

    All works were delivered by Dura’s specialist Operations Services team, who are fully IPAF and PASMA trained and experienced in managing complex access and sequencing challenges on city-centre developments.

    Client

    BAM Construction Ltd.

    Architect

    Buckley Gray Yeoman

    Structural Engineer

    Elliott Wood

    Products

    d² Dura Riser System
    d² Dura Grating Mini Mesh

    Services

    Design & Engineering
    Installation

    Smart, Safe & Efficient Installation

    Our modular riser system, comprising Class B fire-rated d² Dura Grating and a patented galvanised steel support frame, was efficiently installed by Dura Composites’ Operations Services team to suit the building’s complex reconfiguration and tight installation tolerances. Designed to be safe from the moment of installation, the system eliminates the need for temporary timber shuttering, handrails or netting, supporting streamlined construction and early-stage protection.

    20 Giltspur Street is a truly groundbreaking project that challenges conventional thinking around demolition and rebuild. By reusing the majority of the existing structure, BAM significantly reduced embodied carbon while unlocking valuable additional space. Dura Composites’ riser system delivered exactly what was needed – a safe, flexible, and ultra-low-carbon solution that integrated seamlessly with the building’s new layout, and the carbon savings achieved align perfectly with the project’s sustainability ambitions.

    Tony Lamotte

    Client Success Manager at Dura Composites

    EC1A 9DD

    Our Specialists

    Our innovative recyclable products can help accelerate the construction of critical infrastructure. Talk to our experienced team about how you can tap into our specialist knowledge and engineering capability for your project.

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