View source for Materials:Hydrotech Semi-intensive Garden Roof Assembly

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<big><big>Division C - Accepted Materials</big></big>
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<big>Group - Vegetated Roof Systems</big>
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<big><big><big><big><big>Hydrotech Semi-intensive Garden Roof<sup>®</sup> Assembly</big></big></big></big></big><br>
<big><big><big>by Hydrotech Membrane Corporation</big></big></big><br>
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| style="background-color:#FFFACD"  | '''<big>Material Acceptance and Product Details</big>'''
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The information published in the RCABC '''''Roofing Practices Manual''''' and offered below does NOT represent a complete set of the manufacturer’s data or specifications, nor is this material recommended or endorsed by the ''Guarantor''. The preparation of a detailed specification is the responsibility of the ''Design Authority''.
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;'''Vegetated Roof System Manufacturer''': [http://en.hydrotechmembrane.ca/  '''Hydrotech Membrane Corporation''']
;Accepted for the ''RoofStar Guarantee Program'': October 25, 2024
;Accepted for application in: Vegetated Roof Systems
;Acceptance Criteria: Refer to the [[VRA Standard | RGC Standard for Vegetated Roofs]]
;System Summary: The Semi-Intensive Garden Roof<sup>®</sup> Assembly is considered a lightweight assembly, but with a slightly deeper soil depth, and is designed to support sod lawns as well as perennials.<br><br>Lawns have unique needs due to the foot traffic they experience. Designers have the ability to create large lawn areas on rooftops using a Garden Roof Semi-Intensive<sup>®</sup> Assembly.<br><br>
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[[File:Extensive VR System (sedum tile).jpg| left | 450 px| link=]]
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:Generally accessible by adjacent hardscape areas, such as a patio, design professionals now have the opportunity to create beautiful additional usable space on projects.<br><br>The assembly incorporates a LiteTop® growing media that provides a firm structure for pedestrian areas while providing proper aeration for good root growth. Lawns require more water for proper establishment and long term growth. Hydrotech strongly recommends that a permanent irrigation be included in the assembly.<br><br>'''Features of the Garden Semi-Intensive<sup>®</sup> Assembly''':
:*Depth of growing media between 200mm and 300mm
:*Increase of usable space
:*Integrated hardscape options
:*Regular irrigation
:*Regular maintenance<br><br>
:'''Typical Application''':<br><br>A Garden Roof® Assembly can expand the livable space of a building through the integration of hardscaped areas with lush landscaped areas of lawn and other vegetation. The maintenance required for these spaces is similar to the care that would be required to maintain this space at grade.<br><br>For more about maintenance, see Part 11 in the [[VRA Standard | RGC Standard for Vegetated Roofs]]<br><br>(Adapted from the manufacturer's summary)
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;Manufacturer online resources: [https://en.hydrotechmembrane.ca/assemblies/garden-roof-assembly/semi-intensive Semi-intensive Garden Roof Assembly]
;System Depth: 203.2 mm (8") to 355.6 mm (14")
;Growing Media Depth: 152.4 mm (6") to 304.8 mm (12")
;Vegetation Profile: as specified by the ''Design Authority''/''Green Roof Design Professional'' (See '''Conditions and Limitations''' below)
;Suitable climate zones: conditional on the specified vegetation profile (refer to the ''Design Authority''/''Green Roof Design Professional'')
;System Components:
*'''Semi-intensive Litetop<sup>®</sup> Growing Media''' (Click [https://rpm.rcabc.org/images/c/c1/Hydrotech_LiteTop_Growing_Media_TDS.pdf '''here'''] for the Technical Data Sheet PDF)
*'''Litetop<sup>®</sup> Filter''' (Click [https://rpm.rcabc.org/images/7/77/Hydrotech_LiteTop_Filter_TDS.pdf '''here'''] for the Technical Data Sheet PDF)
*'''Litetop<sup>®</sup> Aggregate''' only for Gardendrain GR30 (Click [https://rpm.rcabc.org/images/c/cb/Hydrotech_LiteTop_Aggregate_TDS.pdf '''here'''] for the Technical Data Sheet PDF)
*'''Gardendrain GR25''' or '''Gardendrain GR30''' (Click [https://rpm.rcabc.org/images/d/d6/Hydrotech_Gardendrain_GR25_TDS.pdf'''here'''] and [https://rpm.rcabc.org/images/e/e9/Hydrotech_Gardendrain_GR30_TDS.pdf '''here'''] for the Technical Data Sheet PDFs)
*'''Root Stop Standard''' or '''Root Stop HD''' (Click [https://rpm.rcabc.org/images/2/2a/Hydrotech_Root_Stop_TDS.pdf '''here'''] or [https://rpm.rcabc.org/images/0/04/Hydrotech_Root_Stop_HD_TDS.pdf '''here'''] for the Technical Data Sheet PDFs)
*'''Root Stop Tape''' (Click [https://rpm.rcabc.org/images/1/16/Hydrotech_Root_Stop_Tape_TDS.pdf '''here'''] for the Technical Data Sheet PDF)
*'''GardenEdge<sup>®</sup>''' (Click [https://rpm.rcabc.org/images/0/0e/Hydrotech_GardenEdge_TDS.pdf '''here'''] for the Technical Data Sheet PDF)
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;Conditions and Limitations: Note that system thickness is dependent upon the selection of components, which is determined (in part) by design parameters, including hydrological requirements.  Consult with the ''vegetated roof system manufacturer'' for options and saturated system weight.

:Also note that vegetation coverage under the '''''RoofStar Vegetated Roof Guarantee''''' applies only to ''extensive systems'' planted with mats or trays - see [https://rpm.rcabc.org/index.php?title=Guarantee Part 3] of Division A for more about coverage.
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