Sector: Offices
Location: London, UK
Architect: Foster + Partners
The European headquarters for Bloomberg is one of the world’s most environmentally-friendly office buildings.
Designed by Foster + Partners for a 3.2-acre site in the heart of the City of London, the scheme comprises a pair of connected 10-storey stone volumes linked by aerial bridges. It hosts some 1.1 million square feet of office
space – as well as a new entrance to Bank Underground station, cafes and restaurants, two public plazas, and
a museum dedicated to the Roman archaeologic site it stands upon.
With a BREEAM rating of ‘Outstanding’ at a score of 99.1%, the building has been designed to deliver significant savings in water and energy consumption. Bronze fins set into the stone facades open and close in accordance with weather conditions to ventilate the space, while a smart device controls air distribution in
accordance with the number of people using the building at any one time.
Rainwater is collected from the roof, basins and showers to service vacuum flush toilets, and ceilings are covered in
2.5 million polished aluminium ‘petals’ that regulate acoustics, as well as temperature and light. A 210-metre
bronze ramp winds through six floors of the open-plan office furnished with sit-stand desks, encouraging staff
to walk rather than use the lift and perhaps meet a colleague on the way.
When the Royal Institute of British Architects awarded the building its prestigious Stirling Prize in 2018,
then-president Ben Derbyshire said the scheme had “not just raised the bar for office design and city planning, but smashed the ceiling”. Kingspan was commissioned to
create a bespoke American red oaktopped flooring system that would meet the demands of the design
and its sustainability targets.
The starting point was the existing TLM6 access floor system, which creates an accessible void for services beneath. But due to the building’s open floor plate,
the design called for much larger, 576 x 1334mm panels than the standard 600 x 600mm dimensions of the product, and with this increase in scale came fragility – presenting the team with its first opportunity to innovate.
The team needed to ‘think outside the box’ to create a more robust panel that would reduce waste through damage during installation and cost less to replace because of wear and tear in the future.
After rigorous testing, the technicians eschewed the typical solution of bonding timber veneers onto the boards altogether. Instead, they settled on using two separate systems – using the standard modular TLM26 access floor system below a newly-developed magnetised timber covering. “It provided everything the designers and client wanted – a timber floor finish with a homogenous aesthetic, ease of access into the floor void, ease of replacement in the event of damage and a reduction in construction phase and long-term waste,” says Devereux.
Some 34,000 square metres of this Attiro magnet-backed engineered timber overlay was laid over 37,000
square metres of the TLM26 access floor system to create floors throughout the building. On-site cutting of the
materials – all FSC certified – meant offcuts could be used elsewhere in the project, reducing waste in the installation process. “If one timber stave on a pre-bonded panel was damaged, 0.77 square metres of timber plus the panel would have to be replaced and disposed, whereas with the magnetic Attiro only 0.23 square metres would have to be replaced,” says Devereux