Leverkusen, Germany – A roofing solution from Bayer MaterialScience which bonds transparent sheets with polyurethane is sheltering World Cup 2014 spectators from the elements.
Also used in other sports stadiums, Bayer’s Makrolon UV sheet panels have UV protection on both sides and 80% transparent as well as being fit to withstand years of weathering without damage, said Bayer in a press release.
The stadium’s circular suspension roof is comprised of a double-walled structure held in place by a concrete ring. The final inner ring of the stadium roof consists of 110 tonnes of Makrolon sheets, with each sheet 12mm thick and over 10m long.
The sheets cover a total surface area of roughly 7,500 square meters and because the sheet are polycarbonate they are significantly lighter than alternative roofing materials.
The product has four layers – two thinner and two thicker – which are held together by ta polyurethane bond. The Brazilian World Cup stadium, the Estádio Nacional seats 70,000 spectators
