Ambitions realised with warm edge
Edgetech’s Super Spacer has played a crucial role in the construction of one of the Middle East’s most spectacular new buildings.
The celebrated product was used to deliver the 5,500m2 glass facade of the Qatar National Library.
The 42,000m2 structure is home to over a million books, and 500,000 digital editions. The library’s most valuable volumes are kept in a 6m deep, glass-ceilinged room reminiscent of an excavated labyrinth.
Its diamond-shaped facade area has been designed to filter out the glaring Middle Eastern sun, while still letting in enough light to illuminate the library interior.
The facade has been designed without any metallic elements, ensuring there are no thermal bridges to conduct heat into the building – a crucial consideration, since not only does Qatar routinely experience summer temperatures in excess of 40ºC, it is severely affected by global warming.
Its double-glazed IGUs are curved, ensuring that the facade is both self-supporting, and exceptionally resistant to wind and other strong weather.
A low-e coating, and a solar control coating, filter and reflect sunlight, and a grey grid of 3mm metallic dots, with a precise 6mm spacing, was burnt into them in order to reduce radiation transmission even further.
Edgetech’s managing director Chris Alderson said: “In places like Qatar, the constant fluctuations between incredible heat in the day and much cooler evenings exerts considerable pressure on the edge seal. Super Spacer’s structural foam is able to absorb that pumping motion, allowing IGUs to withstand the pressure.
“This is one reason that Super Spacer has been specified in some of the world’s most iconic, architecturally ambitious buildings, and we’re delighted to see it used to such stunning effect in Qatar’s National Library.”