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===Overview===
===Overview===
<p>Modern green roofs are a rapidly developing  commercial market in Ontario. Their primary benefit as a LID technology is in maximizing evapotranspiration for water balance targets. </p>
<p>Modern green roofs are a rapidly developing  commercial market in Ontario. Their primary benefit as a LID technology is in maximizing evapotranspiration for water balance targets. </p>
<p> Green roofs are sometimes referred to as 'ecoroofs', 'vegetated roofs', 'living roofs'.</p>  


{{TextBox|1=Green roofs are ideal for:
{{TextBox|1=Green roofs are ideal for:
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*Zero-lot line projects with outdoor amenity requirements,
*Zero-lot line projects with outdoor amenity requirements,
*Projects looking for accreditation with LEED v.4}}
*Projects looking for accreditation with LEED v.4}}
<p><strong>The fundamental components of a green roof are:</strong></p>
*a roof able to withstand the load,
*a roof membrane resistant to root penetration,
*a drainage layer,
*a filter layer,
*a layer of planting medium,
*plants.
<p><strong>Additional components may include:</strong>
*an irrigation system,
*pre-formed tray modules.</p>


<h4>Types of Green Roofs</h4>
<h4>Types of Green Roofs</h4>
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<br>
<br>
<p>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. </p>  
<p>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. </p>  
<p><strong>The fundamental components of an extensive green roof are:</strong></p>
*a roof able to withstand the load,
*a roof membrane resistant to root penetration,
*a drainage layer,
*a filter layer,
*a layer of planting medium,
*plants.
<p><strong>Additional components may include:</strong>
*an irrigation system,
*pre-formed tray modules.</p>
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