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focus briefing

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A vast polycarbonate roof developed by Palram Europe will be keeping spectators at this year's Olympic and Paralympic Games protected from the searing Greek sun. Made up of almost 5,000 specially developed Palsun UV2 Solar Olympic panels, the 24,000m2 roof of the Athens Olympic Stadium will reflect 60 per cent of solar radiation, reducing heat and blocking harmful UV wavelengths. Architect Santiago Calatrava had originally intended to use glass for the roof until safety concerns prompted it to come up with an alternative. Palsun UV2 Solar Olympic's durable anti-abrasion coat, light transmittance and colour match made it closest to the original design specification in aesthetics and performance terms.

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