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Line 39: <table class="table table-responsive table-striped"><caption><strong>Types of green roofs: defined by construction depth</strong></caption><tr class ='success'><th>Property</th><th>Extensive</th><th>Intensive</th></tr><tr><td>Planting medium depth</td><td>10 - 15 cm</td><td>> 15 cm</td></tr><tr><td>Loading</td><td>up to ~250 kg/m<sup>2</sup></td><td>Limitless where 'roof' is at ground level</td></tr><tr><td>Cost</td><td>Low</td><td>High</td></tr><tr><td>Maintenance</td><td>Depends highly on the aesthetic expectations of stakeholders</td><td>Will be comparable to other landscapes, depending on access requirements.</td></tr><tr><td>Stormwater benefit</td><td>Provides best cost-benefit balance</td><td>Will vary highly</td></tr><tr><td>Biodiversity benefit</td><td>Limited</td><td>High</td></tr><tr><td>Amenity benefit</td><td>Usually visual only<br>i.e. inaccessible</td><td>Often accessible</td></tr></table><br>
→Overview
|Usually visual only<br>i.e. inaccessible||Often accessible
|Usually visual only<br>i.e. inaccessible||Often accessible
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Intensive green roofs are commonly used for amenity space on condo developments or sometimes as urban farms. They are sometimes referred to as roof gardens and encompass diverse uses, design priorities and technical specifications. In the most extreme examples, many urban parkettes including large shade trees may be included in this class, if they have parking garages beneath. As such the discussion on this page is limited to extensive green roofs.8
Intensive green roofs are commonly used for amenity space on condo developments or sometimes as urban farms. They are sometimes referred to as roof gardens and encompass diverse uses, design priorities and technical specifications. In the most extreme examples, many urban parkettes including large shade trees may be included in this class, if they have parking garages beneath. As such the discussion on this page is limited to extensive green roofs.8