Materials:CGT Intensive Layered Vegetated Roof System - Revision history

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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>
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| 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''.
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;:
;'''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
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[[File:Extensive VR System (banner).JPG| left | class=img-responsive | link=]]
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;:
;Manufacturer online resources: [link page name]
;System Type: Intensive
;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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[[Division C: Accepted Materials|<i class="fa fa-chevron-circle-left fa" ></i> Back to ''Accepted Materials'']]

[[Main Page|Home]]

@@ Line 34: / Line 34: @@
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 ;:
-;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/09/CGT_LAYERED_INTENSIVE_SYSTEM_TIS.pdf CGT Semi-intensive-Intensive Layered Vegetated Roof System]
+;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/07/CGT_Layered-Semi-Intensive-TIS.pdf CGT Semi-Intensive Layered Vegetated Roof System]<br>[https://columbia-green.com/wp-content/uploads/2020/09/CGT_LAYERED_INTENSIVE_SYSTEM_TIS.pdf CGT Intensive Layered Vegetated Roof System]
 ;System Type: Intensive<sup>†</sup>
 ;System Depth: 228.6 mm (9") to 1549.4 mm (61")

@@ Line 45: / Line 45: @@
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 *Plants-Trees-Shrubs-Ground cover (Selected by designer)
-*[https://rpm.rcabc.org/images/d/d4/CGT_Intensive_Growing_Media_TDS.pdf '''Intensive Growing Media''']
+*[https://rpm.rcabc.org/images/d/d6/CGT_Semi%E2%80%90Intensive_Growing_Media_TDS.pdf '''Semi-Intensive Growing Media'''] or [https://rpm.rcabc.org/images/d/d4/CGT_Intensive_Growing_Media_TDS.pdf '''Intensive Growing Media''']
 *[https://rpm.rcabc.org/images/5/55/CGT_Mineral_Wool_Retention_Layer_TDS.pdf '''Water Retention Layer'''] - Optional
 *[https://rpm.rcabc.org/images/3/3f/CGT_.75%E2%80%9D_Drainage_Filter_Layer_TDS.pdf '''CGT 0.75" Drainage Filter Layer''']

@@ Line 35: / Line 35: @@
 ;:
 ;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/09/CGT_LAYERED_INTENSIVE_SYSTEM_TIS.pdf CGT Semi-intensive-Intensive Layered Vegetated Roof System]
-;System Type: Intensive
+;System Type: Intensive<sup>†</sup>
 ;System Depth: 228.6 mm (9") to 1549.4 mm (61")
 ;Growing Media Depth: 203.2 mm (8") to 1524 mm (60")

@@ Line 43: / Line 43: @@
 |-
+|
-*Plants-Trees-Shrubs-Ground cover
+*Plants-Trees-Shrubs-Ground cover (Selected by designer)
 *[https://rpm.rcabc.org/images/d/d4/CGT_Intensive_Growing_Media_TDS.pdf '''Intensive Growing Media''']
 *[https://rpm.rcabc.org/images/5/55/CGT_Mineral_Wool_Retention_Layer_TDS.pdf '''Water Retention Layer'''] - Optional

@@ Line 33: / Line 33: @@
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 ;:
-;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/09/CGT_LAYERED_INTENSIVE_SYSTEM_TIS.pdf CGT Intensive Layered Vegetated Roof System]
+;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/09/CGT_LAYERED_INTENSIVE_SYSTEM_TIS.pdf CGT Semi-intensive-Intensive Layered Vegetated Roof System]
 ;System Type: Intensive
 ;System Depth: 228.6 mm (9") to 1549.4 mm (61")
-;Growing Media Depth: 203.2 mm (8") to 1524 mm (60#)
+;Growing Media Depth: 203.2 mm (8") to 1524 mm (60")
 ;Vegetation Profile: Turf-Perennials-Woody Plants-Trees
 ;Suitable climate zones: All BC zones, subject to manufacturer's approval

@@ Line 26: / Line 26: @@
 :The '''Intensive Layered Vegetated Roof System''' is designed to retain water and decrease stormwater runoff.  Once saturated, any excess water moves efficiently through the system and to the nearest roof drain.  The system promotes plant health, allowing airflow in the drainage layer and through the media.  The underlying membrane is protected with a Columbia Green root barrier.  Growing media depths are based on root space requirements for plant material selected, structural requirements, and stormwater retention goals.   Depths typically range from 204.2 mm (8”) to 1219.2 mm (48”)+.
-<br>
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 [[File:Extensive VR System (banner).JPG| left | class=img-responsive |  link=]]

@@ 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 Intensive Layered 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) '''Intensive Layered Vegetated Roof System''' is a deeper media system designed for plant material, including perennials, shrubs and trees. Columbia Green Intensive growing media is used in this system. The Intensive system offers considerable design flexibility. It consists of a root barrier, drainage layer, filtration layer, and optional water retention layer. This system can be used in any landscape design, installed on the roof or in large planters.  It is easy to install‐ layers can be cut in the field to fit curves and irregular shapes.
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@@ Line 31: / Line 33: @@
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 ;:
-;Manufacturer online resources: [link page name]
+;Manufacturer online resources: [https://columbia-green.com/wp-content/uploads/2020/09/CGT_LAYERED_INTENSIVE_SYSTEM_TIS.pdf CGT Intensive Layered Vegetated Roof System]
 ;System Type: Intensive
-;System Depth: give range
+;System Depth: 228.6 mm (9") to 1549.4 mm (61")
-;Growing Media Depth: give range
+;Growing Media Depth: 203.2 mm (8") to 1524 mm (60#)
-;Vegetation Profile: give manufacturer's profile name or description
+;Vegetation Profile: Turf-Perennials-Woody Plants-Trees
-;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''']
+*Plants-Trees-Shrubs-Ground cover
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/d/d4/CGT_Intensive_Growing_Media_TDS.pdf '''Intensive Growing Media''']
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/5/55/CGT_Mineral_Wool_Retention_Layer_TDS.pdf '''Water Retention Layer'''] - Optional
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/3/3f/CGT_.75%E2%80%9D_Drainage_Filter_Layer_TDS.pdf '''CGT 0.75" Drainage Filter Layer''']
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/a/a4/CGT_Root_Barrier_ML2109_TDS.pdf '''CGT Root Barrier''']
-*[link '''Component name''']
+:'''Roof Assembly''' by roofing ''Contractor''
-*[link '''Component name''']
-*[link '''Component name''']
+*[https://rpm.rcabc.org/images/4/4c/CGT_Metal_Edger_for_Layered_System_TDS.pdf '''CGT Metal Edger''']
 |}
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