(Draft) VRA Standard - Revision history

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

James Klassen: /* 10.3.2.7. Installation of Void Fill and Filtration Layers */

2026-06-19T20:21:31Z

‎10.3.2.7. Installation of Void Fill and Filtration Layers

James Klassen: /* 10.3.2.5. Installation of Root Barrier {{hilite | and Membrane Protection Layer|| 2027-June-11 }} */

2026-06-19T20:19:58Z

‎10.3.2.5. Installation of Root Barrier {{hilite | and Membrane Protection Layer|| 2027-June-11 }}

James Klassen: /* 10.3.2.5. Installation of Root Barrier */

2026-06-19T19:08:54Z

‎10.3.2.5. Installation of Root Barrier

James Klassen: /* 10.2.1.1. Void Fill Materials */

2026-06-19T18:57:52Z

‎10.2.1.1. Void Fill Materials

James Klassen: /* 7.1.5.1. Growing Media Depth Requirements for All Assemblies */

2026-06-19T18:51:37Z

‎7.1.5.1. Growing Media Depth Requirements for All Assemblies

Show changes

@@ 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 1,943: / Line 1,943: @@
 | 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>
 |-
-| [[File:VRA - Illustration - Figure 5.1.3.3.-A.png | link=https://rpm.rcabc.org/images/f/ff/VRA_-_Illustration_-_Figure_5.1.3.3.-A.png| 550 px]]
+| [[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>

@@ Line 1,915: / Line 1,915: @@
 <li>sealed at all joints between courses of material using the ''vegetated roof system manufacturer’s'' proprietary or warrantied materials,
 <li>tightly fitted around roof penetrations, ''roof drains'', and other openings,
 <li>secured around penetration flashings,
 <li>carried up all vertical transitions (including penetration flashings) at least 304.8 mm (12”) above the finished surface of the ''growing media'', and

@@ Line 1,836: / Line 1,836: @@
 <ol>
 <li>{{hilite | A root barrier is required for every ''vegetated roof system''|| 2027-June-11 }}.
-<li>The root barrier shall conform to the material requirements in [[#5.2.1.2. Root Barriers | Article 5.2.1.2.]] and shall be one of the component materials of the ''vegetated roof system'' accepted by the '''''Guarantor''''', listed in Division C of this ''Manual''.
+<li>{{hilite | The root barrier shall conform to the material requirements in [[#5.2.1.2. Root Barriers | Article 5.2.1.2.]] and shall be one of the component materials of the ''vegetated roof system'' accepted by the '''''Guarantor''''', listed in Division C of this ''Manual''|| 2027-June-11 }}.
-<li>The root barrier must be
+<li>{{hilite | The root barrier must be|| 2027-June-11 }}
 <ol>
-<li>protected from damage prior to, during, and after installation,
+<li>{{hilite | protected from damage prior to, during, and after installation|| 2027-June-11 }},
-<li>installed directly over a clean, debris-free roof membrane,
+<li>{{hilite | installed directly over a clean, debris-free roof membrane|| 2027-June-11 }},
-<li>installed in positively overlapping courses (see Sentence (4)), in a continuous plane above the roof membrane, and kept clean where overlapping layers will be seamed,
+<li>{{hilite | installed in positively overlapping courses (see Sentence (4)), in a continuous plane above the roof membrane, and kept clean where overlapping layers will be seamed|| 2027-June-11 }},
-<li>carried horizontally wherever ''vegetation'' will be installed,
+<li>{{hilite | carried horizontally wherever ''vegetation'' will be installed|| 2027-June-11 }},
-<li>carried across all separation zones (subject to the minimum separation zone requirements in Article 5.1.3.3.) or where the vegetated roof system terminates with an open roof field (no roof divider) at least
+<li>{{hilite | carried across all separation zones (subject to the minimum separation zone requirements in [[#5.1.3.3. Separation of vegetation from roofing details | Article 5.1.3.3.]]) or where the ''vegetated roof system'' terminates with an open roof field (no roof divider) at least|| 2027-June-11 }}
 <ol>
-<li>304.8 mm (12") when the system is extensive, and
+<li>{{hilite | 304.8 mm (12") when the system is ''extensive''|| 2027-June-11 }}, and
-<li>609.6 mm (24") when the system is either semi-intensive or intensive,
+<li>{{hilite | 609.6 mm (24") when the system is either ''semi-intensive'' or ''intensive''|| 2027-June-11 }},
 </li></ol>
-<li>carried vertically up all intersecting or adjacent planes (i.e., ''curbs'', ''control joints'', ''parapets'', ''walls'') at least 203.2 mm (8”) above the finished surface of the ''growing media'',
+<li>{{hilite | carried vertically up all intersecting or adjacent planes (i.e., ''curbs'', ''control joints'', ''parapets'', ''walls'') at least 203.2 mm (8”) above the finished surface of the ''growing media''|| 2027-June-11 }},
-<li>folded down at all vertical transitions to obtain double thickness at 90-degree transitions when required by the ''vegetated roof system manufacturer'',
+<li>{{hilite | folded down at all vertical transitions to obtain double thickness at 90-degree transitions when required by the ''vegetated roof system manufacturer''|| 2027-June-11 }},
-<li>secured in place on vertical or steeply sloped surfaces (i.e., with linear metal base wall flashings), to prevent slumping,
+<li>{{hilite | secured in place on vertical or steeply sloped surfaces (i.e., with linear metal base wall flashings), to prevent slumping|| 2027-June-11 }},
-<li>trimmed to fit tightly around the base of penetration flashings,
+<li>{{hilite | trimmed to fit tightly around the base of penetration flashings|| 2027-June-11 }},
-<li>trimmed to fit closely around installed ''drain'' strainers, and
+<li>{{hilite | trimmed to fit closely around installed ''drain'' strainers|| 2027-June-11 }}, and
-<li>secured in place to prevent displacement by wind.
+<li>{{hilite | secured in place to prevent displacement by wind|| 2027-June-11 }}.
 </li></ol>
-<li>{{hilite | Adjacent courses of root barrier material installed below || 2027-June-11 }}
+<li>{{hilite | Adjacent courses of root barrier material installed below|| 2027-June-11 }}
 <ol>
 <li>{{hilite | an ''extensive vegetated roof system'' shall be overlapped at least 304.8 mm (12") (greater if specified by the ''vegetated roof system manufacturer''), and the overlap may be left loose-laid unless sealing the overlap is required by the vegetated roof system manufacturer or the ''Design Authority''|| 2027-June-11 }}.
@@ Line 1,870: / Line 1,870: @@
 <li>Root barriers installed over a ''conventionally insulated roof assembly'' shall be protected from damage with a protection layer installed below the drainage layer; the protection material shall be specified by the ''vegetated roof system manufacturer'' and acceptable to the roof system ''manufacturer'' (See [[#5.2.1.1. Membrane Protection Layer | Article 5.2.1.1.]]).
 </li></ol>
 {{strike| <li>installed directly over the roof membrane, or as otherwise specified by the ''vegetated roof system manufacturer'',
 <li>secured in place to prevent displacement by wind,

@@ Line 1,763: / Line 1,763: @@
 ====10.2.1.1. Void Fill Materials====
 <ol>
-<li>Materials used as “voiding” to reduce the dead load of an ''intensive green roof system'' must be
+<li>Materials used as “voiding” to reduce the dead load of an ''intensive green roof system'' {{hilite | are not considered part of the ''vegetated roof system'' and therefore are not covered by a '''''RoofStar Vegetated Roof Guarantee''''' (See [[#1.1.1.2. Coverage and Limitations | Article 1.1.1.2.]]), but they|| 2027-June-11 }} must be
 <ol>
 <li>specified or permitted by the ''green roof design professional'',