Flat Green Roof Extension

Extensive green roofs are a surface treatment for rooftops typically less than 6 inches in depth involving the addition of growth media and plants to create a sustainable green space on a flat or nearly flat roof.

Flat green roof extension.

Green roofs extend the life and improve the performance of the roof cutting energy costs. A green roof is a great way to create an attractive design feature on an outbuilding like a shed or garage or transform your home. Used over a whole roof a green roof will be the single overriding design influence on the house as well as impacting on the construction right down to the foundations. Flat or gently sloping roofs are most accommodating for green roofs but roofs with as much as a 40 slope can support vegetation with appropriate engineering and soil retention devices.

A green roof is in ecological terms a great and simple thing to do. Planted with hundreds of low growing succulents the little flat roofed extension off their 1925 colonial revival helps slow down and filter rainwater runoff. A sloping green roof provides the bonus of greater visibility from the ground. There are two main types of green roof.

Residential green roofs such as theirs protect natural waterways from oily street residue by lessening the chances that municipal storm drain systems will overflow. Extensive green roof advocates have claimed numerous benefits including improved air quality stormwater attenuation reduction of the heat island effect extended roof life and aesthetic value. However vegetation for this type of roof is limited to sedum grasses and mosses contained within a sedum blanket.