Materials:CGT Hybrid (Blue-Green) Vegetated Roof System - Revision history

James Klassen at 17:31, 19 June 2026

2026-06-19T17:31:30Z

James Klassen: James Klassen moved page Materials:CGT Water Detention Unit Vegetated Roof to Materials:CGT Hybrid (Blue-Green) Vegetated Roof System

2026-06-19T17:22:22Z

James Klassen moved page Materials:CGT Water Detention Unit Vegetated Roof to Materials:CGT Hybrid (Blue-Green) Vegetated Roof System

James Klassen at 17:22, 19 June 2026

2026-06-19T17:22:06Z

James Klassen: Created page with "NOTOC NONUMBEREDHEADINGS {{DISPLAYTITLE:{{FULLPAGENAME}}}} ..."

2026-06-17T15:08:47Z

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<big><big>Division C - Accepted Materials</big></big>
<br>
<big>Group - Vegetated Roof Systems</big>
<hr>
<big><big><big><big><big>CGT Water Detention Unit Vegetated Roof</big></big></big></big></big><br>
<big><big><big>by Columbia Green Technologies LLC</big></big></big><br>
{| class="wikitable"
|-
| style="background-color:#FFFACD" | '''<big>System/Material Acceptance and Product Details</big>'''
<br>
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 system and its various materials recommended or endorsed by the '''''Guarantor'''''. The preparation of a detailed specification is the responsibility of the ''Design Authority''.
|-
|
<div class="col-md-12">
<div class="col-md-6">
;:
;'''Vegetated Roof System Manufacturer''': [https://columbia-green.com/ ''' https://columbia-green.com/''']
;Accepted for the ''RoofStar Guarantee Program'': June 11, 2026
;Accepted for application in: Vegetated Roof Systems
;Acceptance Criteria: Refer to the [[VRA Standard | RGC Standard for Vegetated Roofs]]
;System Summary: description here, using <br>breaks
<br>
<div style="text-align: left;">
[[File:Extensive VR System (banner).JPG| left | class=img-responsive | link=]]
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<div class="col-md-6">
;:
;Manufacturer online resources: [link page name]
;System Type: Extensive
;System Depth: give range
;Growing Media Depth: give range
;Vegetation Profile: give manufacturer's profile name or description
;Suitable climate zones: give range or list zone numbers
;System Components<sup>*</sup>: In the usual order, from top to bottom; click on link for Technical Data Sheet (TDS)
:{| class="wikitable"
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*[link '''Component name''']
*[link '''Component name''']
*[link '''Component name''']
*[link '''Component name''']
*[link '''Component name''']
*[link '''Component name''']
*[link '''Component name''']
*[link '''Component name''']
|}
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;<sup>†</sup>Guarantor's Notes: Systems labeled "Inverted" are designed for a ''protected membrane roof assembly'', also known as an inverted ''roof assembly''.

:While ''Semi-intensive'' and ''Intensive vegetated roof systems'' are limited to only ''protected membrane roofs'' (See the [https://rpm.rcabc.org/index.php?title=VRA_Standard#1.1.3.2._Permitted_Vegetated_Roof_Systems Sentence 1.1.3.2.(5)] in the "RGC Standard for Vegetated Roofs"), some vegetated roof system manufacturers offer their systems for ''conventionally insulated roofs''. To request a written Variance to the published limitation, follow the requirements in [https://rpm.rcabc.org/index.php?title=VRA_Standard#1.1.3.6._Variances Article 1.1.3.6.].

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;<sup>*</sup>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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|}

<hr>

[[Division C: Accepted Materials|<i class="fa fa-chevron-circle-left fa" ></i> Back to ''Accepted Materials'']]

[[Main Page|Home]]

@@ Line 36: / Line 36: @@
 ;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/10/CGT_WATER_STORAGE_UNITS_TIS.pdf Hybrid (Blue-Green) Vegetated Roof System]
 ;System Type: Extensive
-;System Depth: give range
+;System Depth: 212.8 mm (8.38") to 349 mm (13.38")
-;Growing Media Depth: give range
+;Growing Media Depth: 212.8 mm (8.38") to 349 mm (13.38")
-;Vegetation Profile: give manufacturer's profile name or description
+;Vegetation Profile: Sedum-Herbaceus-Grasses
-;Suitable climate zones: give range or list zone numbers
+;Suitable climate zones: All BC zones, subject to manufacturer's approval
 ;System Components<sup>*</sup>: In the usual order, from top to bottom; click on link for Technical Data Sheet (TDS)
 :{| class="wikitable"
 |-
+|
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/5/5f/CGT_Pregrown_Sedum_Mat_TDS.pdf '''CGT Sedum Mat'''], [https://rpm.rcabc.org/images/c/c4/CGT_Pre-Grown_Sedum_Tile_TDS.pdf '''CGT Sedum Tile'''], or pre-grown vegetation in trays by manufacturer
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/8/88/CGT_Extensive_Growing_Media_TDS.pdf '''CGT Extensive Growing Media''']
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/5/55/CGT_Mineral_Wool_Retention_Layer_TDS.pdf '''CGT 1" Water Retention Layer'''] or [https://rpm.rcabc.org/images/4/4a/CGT_Standard_Water_Retention_Layer_TDS.pdf '''Standard Water Retention Layer'''] (Consult system manufacturer)
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/c/ce/CGT_.375%E2%80%9D_Drainage_Filter_Layer_TDS.pdf '''CGT 0.375" Drainage Filter Layer''']
-*[link '''Component name''']
+*'''CGT Geogrid'''
-*[link '''Component name''']
+*'''CGT Water Detention Unit'''
-*[link '''Component name''']
+*'''CGT Geotextile Fabric'''
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/a/a4/CGT_Root_Barrier_ML2109_TDS.pdf '''CGT Root Barrier''']
 |}
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← Older revision	Revision as of 17:22, 19 June 2026
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@@ Line 7: / Line 7: @@
 <big>Group - Vegetated Roof Systems</big>
 <hr>
-<big><big><big><big><big>CGT Water Detention Unit Vegetated Roof</big></big></big></big></big><br>
+<big><big><big><big><big>CGT Hybrid (Blue-Green) Vegetated Roof System</big></big></big></big></big><br>
 <big><big><big>by Columbia Green Technologies LLC</big></big></big><br>
 {| class="wikitable"
@@ Line 23: / Line 23: @@
 ;Accepted for application in: Vegetated Roof Systems
 ;Acceptance Criteria: Refer to the [[VRA Standard | RGC Standard for Vegetated Roofs]]
-;System Summary: description here, using <br>breaks
+;System Summary: The Columbia Green Technologies (CGT) '''Hybrid (Blue-Green) Vegetated Roof System''' allow for rooftop detention underneath our Tray and Layered Green Roof systems.  This hybrid system allows you to maximize your rooftop for stormwater management‐ allowing for projects that want to green the rooftop, while also providing stormwater detention.
-<br>
 <div style="text-align: left;">
 [[File:Extensive VR System (banner).JPG| left | class=img-responsive |  link=]]
@@ Line 31: / Line 34: @@
 <div class="col-md-6">
 ;:
-;Manufacturer online resources: [link page name]
+;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/10/CGT_WATER_STORAGE_UNITS_TIS.pdf Hybrid (Blue-Green) Vegetated Roof System]
 ;System Type: Extensive
 ;System Depth: give range

Materials:CGT Hybrid (Blue-Green) Vegetated Roof System - Revision history

James Klassen at 17:31, 19 June 2026

James Klassen: James Klassen moved page Materials:CGT Water Detention Unit Vegetated Roof to Materials:CGT Hybrid (Blue-Green) Vegetated Roof System

James Klassen at 17:22, 19 June 2026

James Klassen: Created page with "__NOTOC__ __NONUMBEREDHEADINGS__ {{DISPLAYTITLE:{{FULLPAGENAME}}}} ..."

James Klassen: Created page with "NOTOC NONUMBEREDHEADINGS {{DISPLAYTITLE:{{FULLPAGENAME}}}} ..."