In New York City, Even the Empire State Building Has a Green Roof

Sourced from Wired UK

Perched on the edge of the Hudson river, this is the largest green roof in New York City, spanning 89,001 square metres. Developed by London-based material manufacturer Low and Bonar, the roof’s huge size means it absorbs 25.7 million litres of rainwater a year.

The green roof sits on top of the Javits Centre, the largest convention space in Manhattan. Before it was built, the building was sheltered by a roof made of glass: it looked good, but leaked heat, and the reflective surface killed hundreds of confused birds a year. So, in 2010, the Javits Centre turned to Low and Bonar for a solution.

The result was a roof made of lightweight polymer mats, woven into a carpet like geotextile, filtering soil whilst capturing and absorbing water, like the earth.

“The roof provides high levels of insulation, reducing energy consumption in some buildings by a quarter,” says Brett Simpson, Low and Bonar’s CEO. On top of this, bird deaths were reduced by 90 per cent.

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