Hot Rubber Roof Systems Standard - Revision history

James Klassen: /* 14.1.3.13. Structures and Equipment */

2026-04-21T14:52:37Z

‎14.1.3.13. Structures and Equipment

James Klassen: /* 14.1.3.11. Wearing Surfaces */

2026-04-20T21:03:01Z

‎14.1.3.11. Wearing Surfaces

James Klassen: /* 14.1.2.2. RoofStar 15-year Guarantee */

2026-04-20T18:38:58Z

‎14.1.2.2. RoofStar 15-year Guarantee

James Klassen: /* 3.1.3.2. Calculation of Specified Wind Loads */

2026-04-10T21:02:23Z

‎3.1.3.2. Calculation of Specified Wind Loads

James Klassen: /* 3.1.3.2. Calculation of Specified Wind Loads */

2026-03-31T16:34:49Z

‎3.1.3.2. Calculation of Specified Wind Loads

James Klassen: /* 1.1.3.3. Membrane Integrity Testing */

2026-03-19T18:49:14Z

‎1.1.3.3. Membrane Integrity Testing

James Klassen: /* 11.1.4.3. Membrane Gutters */

2026-03-06T18:55:37Z

‎11.1.4.3. Membrane Gutters

James Klassen: /* 10.1.4.3. {{hilite | Tall Parapets || 2024-January-31 }} */

2026-03-04T19:26:43Z

‎10.1.4.3. {{hilite | Tall Parapets || 2024-January-31 }}

James Klassen: /* 9.3.2.1. Preparation of Substrate */

2026-02-26T16:39:05Z

‎9.3.2.1. Preparation of Substrate

James Klassen: /* 13.3.2. All Systems */

2026-02-13T18:03:58Z

‎13.3.2. All Systems

@@ Line 4,749: / Line 4,749: @@
 <li><span class="recommended">simplify removal of materials when membrane repairs are required</span>.
 </li></ol>
-<li>must take into account inevitable roof renewal (see [[Notes to Hot Rubber Standard#A-14.1.3.13. | Note A-14.1.3.13.]]),
+<li>{{hilite | must take into account inevitable roof renewal || 2023-June-16 }} (see [[Notes to SBS Standard#A-14.1.3.13. | Note A-14.1.3.13.]]),
 <li>must be placed on an appropriate protection layer or supported by pedestals, pavers, or other means of distributing weight and point loading, and
 <li>may be placed on an ''insulated roof system'' provided the insulation will support all anticipated dead loads, live loads and point loads (See [[#14.1.3.2. Loads | Article 14.1.3.2., "Loads"]]).
@@ Line 4,767: / Line 4,767: @@
 <li>at least 101.6 mm (4") in height above the drainage plane of the highest adjacent ''roof assembly'',
 <li>completely enveloped with fully adhered acceptable membrane flashing (including all faces of drainage knock‐outs), and
-<li>properly waterproofed around dowels in their final position, using
+<li>properly waterproofed around dowels {{hilite |in their final position, using|| 2021-February-7 }}
 <ol>
-<li>a 2-component catalyzed polymethyl methacrylate (PMMA) or polyurethane methyl methacrylate (PUMA) reinforced liquid membrane flashing system, or
+<li>{{hilite | a 2-component catalyzed polymethyl methacrylate (PMMA) or polyurethane methyl methacrylate (PUMA) reinforced liquid membrane flashing system|| 2021-February-7 }}, or
-<li>two cured coats of an Accepted polyurethane or silicon-based single-component liquid flashing system (See [[#12.3.2.6. Liquid Membrane Flashing | Article 12.3.2.6., "Liquid Membrane Flashing"]]).
+<li>{{hilite | two cured coats of an Accepted polyurethane or silicon-based single-component liquid flashing system (See [[#12.3.2.6. Liquid Membrane Flashing | Article 12.3.2.6., "Liquid Membrane Flashing"]])|| 2021-February-7 }}.
 </li></ol>
 </li></ol>
 <li>When a structural planter adjoins a ''protected roof system'', the planter design must include
 <ol>
 <li>a plumbed mechanical drain {{hilite | conforming to the requirements for planter drains in the [https://rpm.rcabc.org/index.php?title=VRA_Standard “RGC Standard for Vegetated Roofs”] || 2025-October-25 }}, {{strike| inclusive of
@@ Line 4,782: / Line 4,780: @@
 <li>maintenance access, || 2024-October-29 }} or
 {{strike| </li></ol> || 2024-October-29 }}
 <li>When a structural planter adjoins an ''insulated roof system'', only a plumbed mechanical drain is permissible.
 <li><span class="recommended">A design review is advisable when a structural water feature incorporates penetrations for wiring, lights, or other submerged features</span>.
@@ Line 4,787: / Line 4,787: @@
 <li>Drains, re-circulation inlets, and outlets used in water features, must include clamping rings, and must be sealed to the membrane ''assembly''.
 <li>When a leak detection system is specified, only non‐ferrous metal drains may be used.
 </li></ol>

@@ Line 4,695: / Line 4,695: @@
 <ol>
 <li>When a wearing surface is specified,
 <ol>

@@ Line 4,559: / Line 4,559: @@
 </li></ol>
-====14.1.2.2. RoofStar 15-year Guarantee====
+====14.1.2.2. Reserved====
 ===={{hilite | 14.1.2.3. RoofStar Vegetated Roof Guarantee || 2025-October-25 }}====

@@ Line 869: / Line 869: @@
 <li>A ''registered professional'' "skilled in the work concerned" must perform or validate the calculation of ''Specified Wind Loads'' (See the "British Columbia Building Code 2024", Division C, Part 2, [https://www2.gov.bc.ca/assets/gov/farming-natural-resources-and-industry/construction-industry/building-codes-and-standards/revisions-and-mo/bcbc_2024.pdf#page=836 Article 2.2.1.2., "Structural Design"]), using
 <ol>
-<li>the [https://nrc.canada.ca/en/research-development/products-services/software-applications/wind-load-calculators-roof-cladding-vegetated-roof-assembly "Wind Uplift Resistance Calculator"] (formerly "Wind-RCI"), or
+<li>the [https://nrc.canada.ca/en/research-development/products-services/software-applications/wind-roof-calculators-internet-wind-rci Wind-Roof Calculators on the Internet (Wind-RCI)], or
 <li>the formulae and procedures in the "British Columbia Building Code 2024", Division B, Part 4, [https://www2.gov.bc.ca/assets/gov/farming-natural-resources-and-industry/construction-industry/building-codes-and-standards/revisions-and-mo/bcbc_2024.pdf#page=529 Subsection 4.1.7.,"Wind Load"] (See [[Notes to SBS Standard#A-3.1.1.1. | Note A-3.1.1.1.]]).
 </li></ol>

@@ Line 911: / Line 911: @@
 <li>Mansards are a ''roof system'' and are therefore subject to the requirements in this Part.
 <li>Securement of an adjoining ''water-shedding system'' shall be made in accordance with the requirements in the applicable Standard.
-<li>{{hilite | Wind loads for a ''roof assembly'' supporting a ''vegetated roof system'' shall be determined in accordance with the requirements of the Building Code and || 2025-October-25 }} [https://rpm.rcabc.org/index.php?title=VRA_Standard#3.1.3.3. Resistance to Specified Wind Loads | Article 3.1.3.3.]] {{hilite | of the “RGC Standard for Vegetated Roofs”|| 2025-October-25 }}.
+<li>{{hilite | Wind loads for a ''roof assembly'' supporting a ''vegetated roof system'' shall be determined in accordance with the requirements of the Building Code and || 2025-October-25 }} [https://rpm.rcabc.org/index.php?title=VRA_Standard#3.1.3.3._Resistance_to_Specified_Wind_Loads Article 3.1.3.3.] {{hilite | of the “RGC Standard for Vegetated Roofs”|| 2025-October-25 }}.
 {{strike| <li>''Vegetated Roof Systems'' specified for || 2024-October-24 }}
 <ol>

@@ Line 265: / Line 265: @@
 <li>''overburden'', amenities, or equipment exceed 152.4 mm (6”) in depth{{strike| (see Figure 1.1.3-A) || 2024-October-24 }}.
 </li></ol>
-<li>{{hilite | When the ''roof assembly'' supports a ''vegetated roof system'' covered by a '''''RoofStar Guarantee''''' an electrical current membrane integrity test is optional (not required)  || 2025-October-25 }}<span class="recommended">{{hilite | but recommended || 2025-October-25 }}</span>.{{hilite | An electrical current membrane integrity test is required immediately prior to the installation of a ''vegetated roof system'' || 2025-October-25 }}.
+<li>{{hilite | When the ''roof assembly'' supports a ''vegetated roof system'' covered by a '''''RoofStar Guarantee''''',|| 2025-October-25 }} <span class="recommended">{{hilite | an electrical current membrane integrity test is recommended but is not required|| 2025-October-25 }}</span>; {{hilite | however, when an integrity test is specified by the ''Design Authority'', it must be carried out immediately prior to the installation of a ''vegetated roof system'' || 2025-October-25 }}.
 <li>An electrical current membrane integrity test must be performed by an RGC-recognized service provider listed in [[Division_C | Division C]].
 <li>Flood testing employed as a secondary or alternative membrane integrity test <span class="recommended">is strongly discouraged for ''conventionally insulated roof systems'' because of the risk of extensive damage to ''system'' components or the building interior</span>, and is best suited for ''protected roof systems'' (See [[Notes to Hot Rubber Standard#A-1.1.3.3.(5) | Note A-1.1.3.3.(5)]]).

@@ Line 3,023: / Line 3,023: @@
 <li>rainfall and snow load calculations for the building location,
 <li> drain type, size, and flow rate, and
-<li>{size and placement of the ''overflow drain''.
+<li>size and placement of the ''overflow drain''.
 </li></ol>
 <li>New membrane ''gutters'' shall be designed with a minimum width of 304.8 mm (12”) and a depth not exceeding the ''gutter’s'' width.

@@ Line 2,326: / Line 2,326: @@
 ====10.1.4.3. {{hilite | Tall Parapets || 2024-January-31 }}====
 <ol>
 <li>When a {{strike| ''roof system'' transitions to a ''wall'' greater than 609.6 mm (24") in height (a "High Wall"), and the ''wall'' || 2023-January-26 }} {{hilite | ''parapet'' higher than 609.6 mm (24") (a ''tall parapet'') || 2024-January-31 }} is specified as part of the ''Contractor’s'' scope of work,

@@ Line 2,057: / Line 2,057: @@
 <li>Substrates must be primed, if required by the ''manufacturer''.
 <li>All plane transitions must be prepared or reinforced in the manner specified by the ''manufacturer''.
 <ol>
 <li>must cure at least 28 days before receiving adhered membranes, but this limitation may be reduced if both the building envelope engineer and the ''manufacturer'' expressly permit membrane application within the first 28 days after pouring, and their respective signed letters of permission are furnished to the '''''Guarantor''''' forthwith, to be included with the ''project'' record ("adhered", as used in this requirement, means fully or intermittently bonding any membrane to the deck with an adhesive, hot asphalt (bitumen), or heat),

@@ Line 4,288: / Line 4,288: @@
 <li>is copper and zinc, and the material thickness or weight exceeds the weight or gauge requirements in [[#13.2.1.2. Sheet Metal Grade and Gauge | Article 13.2.1.2.]]
 </li></ol>
-<li>{{hilite | '''Straight (linear) joints''' between lengths of ''linear metal flashing'' must be fully seamed using only an S-lock ({{hilite | '''Figure 13.3.2.2.-A'''|| 2025-October-25 }}) or Standing Seam ({{hilite | '''Figure 13.3.2.2.-B'''|| 2025-October-25 }}), but this requirement does not apply to|| 2021-October-30 }}
+<li>{{hilite | '''Straight (linear) joints''' between lengths of ''linear metal flashing'' must be fully seamed using only a Standing Seam ({{hilite | '''Figure 13.3.2.2.-A'''|| 2025-October-25 }}) or S-lock ({{hilite | '''Figures 13.3.2.2.-B''' and '''C'''|| 2025-October-25 }}), but this requirement does not apply to|| 2021-October-30 }}
 <ol>
 <li>{{hilite | flashing fashioned from 22-gauge metal (or heavier)|| 2021-October-30 }}, or
@@ Line 4,333: / Line 4,333: @@
 <br>
-::{|
+{|
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''{{hilite | Figure 13.3.2.2.-A || 2026-October-31 }} Standing Seam'''<br>Forming Part of Sentence 13.3.2.2.(5)<br><small>(Click to expand illustration)</small> || 2025-October-25 }}
+| colspan="1"; style="text-align:center;width:600px;" | {{hilite | '''{{hilite | Figure 13.3.2.2.-A || 2026-October-31 }} Standing Seam'''<br>Forming Part of Sentence 13.3.2.2.(5)<br><small>(Click to expand illustration)</small> || 2025-October-25 }}
 |-
 | [[File:MF - Standing Seam.png | link=https://rpm.rcabc.org/images/a/a3/MF_-_Standing_Seam.png | 500 px]]
 |}
+<br>
-<li>'''S-locked seams''' {{hilite | (See '''Figure 13.3.2.2.-B''')|| 2026-October-31 }} must be secured through flashing tab (leaf) with at least one (1) acceptable low-profile flat head screw when the seam is longer than 101.6 mm (4”), but fasteners must not be spaced more than 203.2 mm (8”) O.C.
+<li>'''S-locked seams''' {{hilite | (See '''Figure 13.3.2.2.-B''' and '''Figure 13.3.2.2.-C''')|| 2026-October-31 }} must be secured through flashing tab (leaf) with at least one (1) acceptable low-profile flat head screw when the seam is longer than 101.6 mm (4”), but fasteners must not be spaced more than 203.2 mm (8”) O.C.
 <br>
 <br>
-::{|
 |-
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | {{hilite | '''Figure 13.3.2.2.-B S-Lock, Double''' || 2026-October-31 }}<br>Forming Part of Sentence 13.3.2.2.(11)<br><small>(Click to expand illustration)</small> || 2025-October-25 }}
+| colspan="1"; style="text-align:center;width:600px;" | {{hilite | '''Figure 13.3.2.2.-B S-Lock, Single'''|| 2026-October-31 }}<br>Forming Part of Sentence 13.3.2.2.(11)<br><small>(Click to expand illustration)</small> || colspan="1"; style="text-align:center;width:600px;" | {{hilite | '''Figure 13.3.2.2.-C S-Lock, Double'''|| 2026-October-31 }}<br>Forming Part of Sentence 13.3.2.2.(11)<br><small>(Click to expand illustration)</small>
 |-
-| [[File:MF - S-Lock, Double.png | link=https://rpm.rcabc.org/images/b/b6/MF_-_S-Lock%2C_Double.png | 500 px]]
+| [[File:MF - S-Lock, Single.png | link=https://rpm.rcabc.org/images/0/09/MF_-_S-Lock%2C_Single.png | 500 px]] || [[File:MF - S-Lock, Double.png | link=https://rpm.rcabc.org/images/b/b6/MF_-_S-Lock%2C_Double.png | 500 px]]
 |}
 <li>'''Flat butt seams''' {{hilite | (See '''Figures 13.3.2.2.-C''' and '''13.3.2.2.-D''') || 2026-October-31 }}
@@ Line 4,360: / Line 4,362: @@
 |-
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 13.3.2.2.-C Flat butt seams''' || 2026-October-31 }}<br>{{hilite | Forming Part of Article 13.3.2.2. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
+| colspan="1"; style="text-align:center;width:600px;" | {{hilite | '''Figure 13.3.2.2.-C Flat butt seams''' || 2026-October-31 }}<br>{{hilite | Forming Part of Article 13.3.2.2. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
 |-
 | [[File:Part 13 - Illustration - Figure 13.3.2.2.-C.png|link=https://rpm.rcabc.org/images/f/f0/Part_13_-_Illustration_-_Figure_13.3.2.2.-C.png | 600 px]]
@@ Line 4,368: / Line 4,370: @@
 |-
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 13.3.2.2.-D Flat butt seams''' || 2026-October-31 }}<br>{{hilite | Forming Part of Article 13.3.2.2. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
+| colspan="1"; style="text-align:center;width:600px;" | {{hilite | '''Figure 13.3.2.2.-D Flat butt seams''' || 2026-October-31 }}<br>{{hilite | Forming Part of Article 13.3.2.2. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
 |-
 | [[File:Part 13 - Illustration - Figure 13.3.2.2.-D.png|link=https://rpm.rcabc.org/images/9/92/Part_13_-_Illustration_-_Figure_13.3.2.2.-D.png | 600 px]]
@@ Line 4,408: / Line 4,410: @@
 <li>Where cleats (“wind clips”) are required, they must
 <ol>
-<li>{{hilite | conform to the fabrication requirements in || 2026-October-31 }} [[#13.2.2.1. Fabrication of Flashing | {{hilite | Article 13.2.2.1.|| 2026-October-31 }}]]{{hilite | , and || 2026-October-31}}
+<li>{{hilite | conform to the fabrication requirements in [[#13.2.2.1. Fabrication of Flashing | Article 13.2.2.1.]], and || 2026-October-31}}
 <li>be fastened as close to the bottom edge (hook) as practical but must not be fastened further than a maximum of {{hilite | 25.4 mm (1") || 2026-October-31 }} from the bottom edge (hook).
 </li></ol>