Green Roof Topics

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Green Roof, Green Roof

This does not refer to roofs which are merely colored green, as with green roof shingles. It may also include additional layers such as a root barrier and drainage and irrigation systems.

Rooftop ponds are another form of green roofs which are used to treat greywater.

Pitched sod roofs, a traditional feature of many Scandinavian buildings, tend to be of a simpler design than flat green roofs. This is because the pitch of the roof reduces the risk of water penetrating through the roof structure, allowing the use of fewer waterproofing and drainage layers.

However, green roofs or sod roofs in Northern Scandinavia have been around for centuries. The modern "trend" started when green roofs were developed in Germany in the 1960s, and have since spread to many countries.

In the case of Chicago, the city has passed codes offering incentives to builders who put green roofs on their buildings.

Built over Millennium Park Garage, Chicago's Millennium Park is considered one of the largest intensive green roofs. [1] Other well-known American examples include Chicagos City Hall and the Gap headquarters in San Bruno, CA.

The International Green Roof Institute (IGRI) opened to the public in April 2001 as a research station and educational facility. (It has since been renamed the Scandinavian Green Roof Institute (SGRI) , in view of the increasing number of similar organisations around the world.) Green roofs are well-established in Malm: the Augustenborg housing development near the SGRI botanic garden incorporates green roofs and extensive imaginative landscaping of streams, ponds and soakaways between the buildings to deal with storm water run-off.

They have also been used by companies such as Rolls-Royce Motor Cars, who have one of the biggest green roofs in Europe (covering more than 32,000m to help their factory, at Goodwood, West Sussex, blend into its rural surroundings.

In the Spring 2007 issue of the Green Roof Infrastructure Monitor (Green Roofs for Healthy Cities web site), Jrg Breuning reflects the wind and fire loads of green roofs and how German insurance companies handle extensive green roofs.

Source: Wikipedia > Green Roof