The costs associated with green roofs however and the problems that arise from difficult accessibility have elicited criticism.
Steel green roof detail.
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Simply put a green roof is a system that is installed on an existing roof top covered by plants and other vegetation.
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Architectural details photo by tommy hileman.
The layers of soil and planting provide insulation to the roof along with protection to the waterproofing layer not to mention its environmental credentials.
A green roof naturally acts as an acoustic insulation thermal insulation and fire retardation.
A green or living roof is a flat or low pitched roof with a layer of planting over the waterproofing membrane.
A green roof is a green space that is created by adding various layers of plants and a growing medium to the top portion of a traditional roofing system.
There are many types of waterproofing membrane.
Note that it is not like a traditional roof garden in which planting is done in free standing containers as well as planters that are placed on an easy to access roof terrace.
The key to any good green roof project is a good waterproofing membrane.
Introduction to green roof details.