(Draft) VRA Standard - Revision history

James Klassen: /* 7.2.1.2. Growing Media Specified by Others */

2026-06-25T21:39:30Z

‎7.2.1.2. Growing Media Specified by Others

James Klassen at 21:38, 25 June 2026

2026-06-25T21:38:30Z

James Klassen: /* 7.2.1.2. Growing Media Specified by Others */

2026-06-25T21:32:02Z

‎7.2.1.2. Growing Media Specified by Others

James Klassen: /* 5.1.3.3. Separation of vegetation from roofing details */

2026-06-25T17:18:18Z

‎5.1.3.3. Separation of vegetation from roofing details

James Klassen at 20:45, 24 June 2026

2026-06-24T20:45:00Z

James Klassen: /* 11.3.2.2. Routine Development Care and Maintenance */

2026-06-19T20:41:54Z

‎11.3.2.2. Routine Development Care and Maintenance

James Klassen: /* 10.3.2.8. Separation Zones and Protection of Roof Drains */

2026-06-19T20:37:56Z

‎10.3.2.8. Separation Zones and Protection of Roof Drains

James Klassen: /* 10.3.2.8. Separation Zones and Protection of Roof Drains */

2026-06-19T20:37:17Z

‎10.3.2.8. Separation Zones and Protection of Roof Drains

James Klassen: /* 10.3.2.8. Separation Zones and Protection of Roof Drains */

2026-06-19T20:30:21Z

‎10.3.2.8. Separation Zones and Protection of Roof Drains

James Klassen: /* 10.3.2.8. Separation Zones and Protection of Roof Drains */

2026-06-19T20:28:15Z

‎10.3.2.8. Separation Zones and Protection of Roof Drains

@@ Line 1,526: / Line 1,526: @@
 <li>shall be expressly warrantied by the ''vegetated roof system manufacturer'' (See [[#1.1.3.2. Permitted Vegetated Roof Systems | Article 1.1.3.2.]] for other conditions applicable to the renovation of an existing ''vegetated roof system'').
 </li></ol>
-{| class="wikitable" style="margin-left: auto; margin-right: auto; border: none;"
+:{| class="wikitable" style="margin-left: auto; margin-right: auto; border: none;"
 |-
 {|
 |-
 |-
-| colspan="1"; style="text-align:center;width:700px;" | '''Table 7.2.1.2.'''<br>'''Growing Media (Soil) Content by Volume*'''<br>Forming Part of Article 7.2.1.2.
+| colspan="1"; style="text-align:center;width:750px;" | '''Table 7.2.1.2.'''<br>'''Growing Media (Soil) Content by Volume*'''<br>Forming Part of Article 7.2.1.2.
 |-
 |}
-{| class="wikitable"
+:{| class="wikitable"
 |-
 ! style="width:150px;vertical-align:center; text-align:center;background-color:#cedf90"     | <big>System Type</big> !! style="width:400px;background-color:#EAF9C0;"     | <big>Constituent Type</big> !! style="Width:150px;vertical-align:center;text-align:center;background-color:#EAF9C0;"     |<big>Percentage</big>

@@ Line 1,015: / Line 1,015: @@
 </li></ol>
-====5.1.3.3. Separation of Vegetation from Roofing Details====
+====5.1.3.3. Separation of vegetation from roofing details====
 (See [[Notes to VRA Standard#A-5.1.3.3. | Note A-5.1.3.3.]])
@@ Line 1,526: / Line 1,526: @@
 <li>shall be expressly warrantied by the ''vegetated roof system manufacturer'' (See [[#1.1.3.2. Permitted Vegetated Roof Systems | Article 1.1.3.2.]] for other conditions applicable to the renovation of an existing ''vegetated roof system'').
 </li></ol>
-</li></ol>
+{| class="wikitable" style="margin-left: auto; margin-right: auto; border: none;"
 |-
 {|
 |-
 |-
-| colspan="1"; style="text-align:center;width:600px;" | '''Table 7.2.1.2.'''<br>'''Growing Media (Soil) Content by Volume*'''<br>Forming Part of Article 7.2.1.2.
+| colspan="1"; style="text-align:center;width:700px;" | '''Table 7.2.1.2.'''<br>'''Growing Media (Soil) Content by Volume*'''<br>Forming Part of Article 7.2.1.2.
 |-
 |}
@@ Line 1,558: / Line 1,557: @@
 |}
 :<small>*Adapted from the “Green Roof Design and Installation Resource Manual”, Vol. II, Table 5.6.1 (GRHC); for cross-reference<br>purposes, also see the Canadian Landscape Standard, Section 5.</small>
 ====7.2.1.3. Growing Media Blending and Validation Testing====

@@ Line 1,527: / Line 1,527: @@
 </li></ol>
 </li></ol>
-<br>
+:::{| class="wikitable" style="margin-left: auto; margin-right: auto; border: none;"
-<div class="col-md-12">
+|-
 {|
 |-
 |-
-| colspan="1"; style="text-align:center;width:650px;" | '''Table 7.2.1.2.'''<br>'''Growing Media  (Soil) Content by Volume<big>*</big>'''<br>Forming Part of Article 7.2.1.2.<br><small>(Click to expand)</small>
+| colspan="1"; style="text-align:center;width:600px;" | '''Table 7.2.1.2.'''<br>'''Growing Media (Soil) Content by Volume*'''<br>Forming Part of Article 7.2.1.2.
 |-
-| [[File:VRA Standard Table 7.2.1.2..png |link=https://rpm.rcabc.org/images/4/40/VRA_Standard_Table_7.2.1.2..png| 650 px]]
+| rowspan="4"  style="vertical-align:center; text-align:center;background-color: #b7c656"  | INTENSIVE and<br>SEMI-INTENSIVE || style="height:36px;vertical-align:center; text-align:center;"	|   lightweight aggregate  || style="height:36px;vertical-align:center; text-align:center;"	| 35% - 60%
 |}
 :<small>*Adapted from the “Green Roof Design and Installation Resource Manual”, Vol. II, Table 5.6.1 (GRHC); for cross-reference<br>purposes, also see the Canadian Landscape Standard, Section 5.</small>
 ====7.2.1.3. Growing Media Blending and Validation Testing====

@@ Line 1,015: / Line 1,015: @@
 </li></ol>
-====5.1.3.3. Separation of vegetation from roofing details====
+====5.1.3.3. Separation of Vegetation from Roofing Details====
 (See [[Notes to VRA Standard#A-5.1.3.3. | Note A-5.1.3.3.]])

@@ Line 83: / Line 83: @@
 <div style="text-align:center">
 '''First Edition''': June 13, 2024
-<br>'''Previous Edition''': N/A
+<br>'''Previous Edition''': October 25, 2024
-<br>'''Current Edition''': Adopted October 25, 2024
+<br>'''Current Edition''': June 11, 2026
 <br><br>
-All changes to this Standard are effective<br><big>'''November 1, 2024'''</big>
+All changes to this Standard are effective<br><big>'''July 1, 2026'''</big>
 </div>
 <div style="text-align:center">

@@ Line 2,137: / Line 2,137: @@
 <li>In addition to the foregoing, the ''qualified green roof installer'' responsible for maintenance shall maintain the ''green roof'' in accordance with best practices, including (without limitation) the following tasks:
 <ol>
 <li>repeat seeding or planting, where necessary (replant bare areas immediately),
 <li>replace potted ''vegetation'' that has died,
 <li>roll any frost-lifted portion of the system,
 <li>cut back, trim, prune, or thin out ''vegetation'', as needed,
-<li>mulch vegetation (See [[Notes to VRA Standard#A-11.3.2.2.(8)(5)| A-11.3.2.2.(8)(5)]]),
+<li>{{hilite | inspect anchors and bracing for trees or other woody ''plants'' (check for signs of constriction, pressure, and chafing damage), and adjust as needed|| 2027-June-11 }},
 <li>reconnect or reposition any disconnected trays or mats,
 <li>adjust anchors or bracing for large ''plants'',
@@ Line 2,152: / Line 2,154: @@
 <li>water (irrigate, where the roof has an irrigation system) the ''vegetated roof system''.
 </li></ol>
 <li>''Growing media'' shall be
 <ol>

@@ Line 1,941: / Line 1,941: @@
 |-
 |-
-| colspan="1"; style="text-align:center;width:550px;" | {{hilite | '''Figure 10.3.2.8.-A'''<br>'''Site-formed Edge Metal Corner'''|| 2027-June-11 }}<br>Forming Part of Article 10.3.2.8.<br><small>(Click to expand)</small>
+| colspan="1"; style="text-align:center;width:550px;" | {{hilite | '''Figure 10.3.2.8.-A'''<br>'''Site-formed Edge Metal Corner'''|| 2027-June-11 }}<br>{{hilite | Forming Part of Article 10.3.2.8.|| 2027-June-11 }}<br><small>(Click to expand)</small>
 |-
 | [[File:Figure 10.3.2.8.-A.png | link=https://rpm.rcabc.org/images/1/10/Figure_10.3.2.8.-A.png| 550 px]]

@@ Line 1,937: / Line 1,937: @@
 <li>''Overflow drains'' must be unobstructed by any edging or substructure layers and must be visible for ease of inspection and maintenance.
 </li></ol>
 ====10.3.2.9. Installation and Commissioning of Irrigation Systems====

@@ Line 1,926: / Line 1,926: @@
 <ol>
 <li>''Separation zone'' fill must be laid directly on a filtration layer, above a continuous drainage layer or directly over drainable materials acceptable to the ''vegetated roof system manufacturer''.
-<li>Edging ([[#5.2.1.3. Edging | Article 5.2.1.3.]]) shall be installed around all perimeters of the ''growing media'', either above or below the drainage mat (the location shall be specified by the ''vegetated roof system manufacturer'' or, in the absence of such direction, by the ''green roof design professional''), to delineate required vegetation-free ''separation zones'' and must be cut and fastened together to form a continuous, rigid retaining border for ''growing media''.
+<li>{{hilite | Edging|| 2026-June-11 }}
-<li>''Roof drains'' must be protected from roots and ''vegetation'' with a ''separation zone'' and a ballast guard or an enclosed inspection chamber (See [[#5.1.3.3. Separation of vegetation from roofing details | Article 5.1.3.3.]] and [[# | Article 6.1.3.1.]]).
+<ol>
 <li>''Overflow drains'' must be unobstructed by any edging or substructure layers and must be visible for ease of inspection and maintenance.
 </li></ol>