Architect:
Archer Architects

Client:
Stirling Securities Limited

Contractor:
Cox & Gill

Scope & Products:

Janisol Arte 2.0 – Steel Thermally Broken Windows
VISS Fire – Steel Curtain Wall
VISS Facade – Steel Curtain Wall
Jansiol – Steel Thermally Broken Entrance Doors and Screens System
Janisol 2 – 30/30 Steel Fire Rated Doors and Screens
Janisol – Overclad Panel Doors
Economy 60 – E30 Internal Fire Rated Steel Doors and Screens

Challenges:

The elevations to the rear presented considerable challenges as they are in very close proximity to the adjacent buildings and had to make extensive use of fire rated glazing systems. This manifested itself both as individual windows, but most spectacularly on the 6th floor with full height curtain walling formed in Jansen VISS Fire Rated Facade. The systems were chosen for their structural ability to span floor to ceiling and house heavy, large span fire rated glazing. The glazing allowed natural light to flood into the building, and met a range of fire certifications to satisfy building control.

Overview:

Sandwiched between two large commercial properties and directly opposite the Woolgate exchange, the retained façade of 74 Coleman Street rises beautifully from the streetscape to provide a distinct contrast between the new and historic fabric of the facade.

Occupying 189m2 in the bustling heart of Moorgate, this extensive refurbishment project, with a 7-storey extension to the rear, was the perfect match for the versatile steel systems offered by Schueco Jansen. Their ability to provide an array of high fire-rated systems, large span glass panels and exceptional thermal performance whilst maintaining slim framing sightlines, allowed us to meet a diverse range of specifications, stringent planning and building control requirements.

Now incorporating high performance thermal broken steel windows, doors, internal fire rated steel partitions and large span fire rated curtain wall, the result of the refurbishment is an excellent thermally efficiency office building worthy of its BREEAM Excellence rating.
Maintaining the elegant proportions of the principal Portland stone clad façade was paramount to the success of the front elevation. This was achieved by utilising the thin sightlines of the Jansen Janisol Arte 2.0. The Arte system drastically improved the thermal performance of the facade and at the same time we were able to mimic the sleek and slender sightlines of the original steel windows. Arched apertures were laser scanned and profiles rolled in Switzerland to perfectly mirror the line of the existing stonework facade.

The elevations to the rear presented considerable challenges as they are in very close proximity to the adjacent buildings and had to make extensive use of fire rated glazing systems. This manifested itself both as individual windows, but most spectacularly on the 6th floor with full height curtain walling formed in Jansen VISS Fire Rated Facade. The systems were chosen for their structural ability to span floor to ceiling and house heavy, large span fire rated glazing. The glazing allowed natural light to flood into the building, and met a range of fire certifications to satisfy building control.

Project Gallery: