Case Study

VERDIGRIS,
BRISTOL

Project Type(s)

Roofing & Cladding Remediation
Insurance Remediation
Fire Compliance

Project Overview

Nestled in a private courtyard within the Old Market Quarters, Verdigris’ vibrant exterior stands out on the Bristol City Centre Skyline. The 5-storey apartment complex is comprised of intricate patina copper standing seam cladding, vivid coloured EWI render panels and finished with a bespoke brise soleil system, which provides privacy to penthouse residents, whilst still affording scenic views over the city.

Access: Situated within a bustling apartment complex, the building presented a unique challenge for our remediation efforts. Gaining access was no small feat – we had to navigate through the underground secure car park, ascend a staircase into the courtyard, or convert an existing electrical meter room by removing a tall stained glass privacy window and installing a temporary access door. Every step required meticulous care and precision, as we manoeuvered scaffolding and essential building materials through these tight spaces to bring our project to life.

Welfare: With space at a premium, we creatively transformed part of the underground car park into our office and welfare facilities. For every challenge we face, we find a way to overcome it.

Scope of Works: The initial scope of works involved the careful removal of the existing copper and flammable EWI façade, along with the combustible PUR insulation and plywood backing board affixed directly to the SFS frame. This was essential for the installation of side rise cavity barriers and firebreaks at all floor levels, around window and door openings, and at all internal compartment lines.

Upon removing the plywood, we discovered the presence of highly flammable Celotex insulation within the SFS, tightly abutted to the external face of the internal plasterboard apartment walls. This critical finding was promptly reported to the client, who issued an immediate directive to replace it with 100mm A1-rated Rockwool insulation. Additionally, we identified the absence of a VCL barrier within the building. This was also communicated to the client, and following an independent condensation analysis, we received instructions to install an approved Procheck A2 FR200 VCL barrier.

The installation commenced with the VCL, followed by 100mm Rockwool insulation within the SFS. Next, we installed a Versaroc weather defence board fixed to the SFS, with waterproof EPDM fitted at all joints and window/door areas. The Versaroc was then covered with an OBEX Cortex breather membrane. All vertical and horizontal side rise cavity barriers were installed at all approved drawing locations and signed off by Siderise.

A Hilti helping hand system was then installed to serve as the main carrier for the new copper cladding. Following this, we fitted 80mm Rockwool rainscreen Duo Slab to assist with the ventilated system. Subsequently, Galvanised Tata Deck sheeting was installed onto the Aluminium L rails supported by the helping hand system. In front of the Tata Deck sheets, we again fitted an OBEX Cortex breather membrane to prevent any reaction between the galvanised Tata sheets and the new Tecu Standing Seam copper cladding.

In all isolated areas, the StoTherm Mineral EWI system was installed, fixed onto an RCM Y-Wall weather defence board.

Existing Brise Soleil: To facilitate the stripping and installation works, we had to remove the steel supports and brise soleil blades at the penthouse levels. The wooden blades were not only extremely faded and jaded but also no longer met current building regulations. We enlisted the expertise of a local established metal design manufacturer who came on site, sanded down, and spray-painted the existing steels to look like new again. In place of the old blades, they manufactured identical aluminium blades, powder-coated to a wooden effect RAL colour. The completion photos clearly showcase the immaculate results.

Waste:
  • Existing Copper: We conscientiously directed the copper to an approved metal recycling outlet, ensuring it was repurposed and diverted from landfills.
  • Plywood and Other Timbers: We proudly partnered with the Bristol Wood Recycling Project (BWRP), which repurposes and reuses the wood within the local community. This initiative not only dramatically reduced our reliance on standard skip companies but also made a significant impact on our carbon footprint. By diverting perfectly good wood from landfills, we contributed to a more sustainable and eco-friendlier project.

Project Duration

8 Months

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BEFORE

L-R: Conor Daly (Site Hand), Brian McCallan (Contracts Manager), Connor Cusack (Site Manager & Junior Contracts Manager) 

AFTER

L-R: Conor Daly (Site Hand), Brian McCallan (Contracts Manager), Connor Cusack (Site Manager & Junior Contracts Manager) 

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