Roof produced a 10 percent decrease in building energy use over the winter months.
Green roof ny data.
The department considers the vegetation layer to mean the layer of a green roof consisting of live plants such as sedum or equally drought resistant and hardy plants spaced so that they cover at least eighty 80 percent of the layer by the compliance period deadline.
Green roofs have vegetation that absorbs rainwater provides insulation and combats the heat island effect where urban environments have higher temperatures than surrounding areas.
Simply put a green roof is one that allows for the growth of vegetation but the process is more involved than plopping down a few potted plants.
The temperature on the green roof on the hottest summer days can be as much as 59 degrees cooler than conventional roofs on neighboring buildings.
Because a green roof will add substantial weight to a building s structure you must hire a professional engineer or registered architect to perform a structural analysis to determine if the existing roof and its support system can hold the added load without a modification.
It s a great start but represents just 60 acres of the 40 000 acres of rooftop space available or less than 0 1 of nyc s 1 million buildings.
Green roof performance data.
Typically a green or living roof is constructed.
As a full service green roofing firm we provide consultation design assistance project management installation and maintenance services.
New york city is home to about 730 buildings with green roofs.
During a 10 month monitoring period asla s green roof prevented 27 500 gallons of stormwater nearly 78 percent of all precipitation hitting the roof from flowing into d c s overburdened sewer and stormwater system.
Green roofs provide many social economic and environmental benefits for individuals communities and cities.