(Draft) Hot Rubber Roof Systems Standard - Revision history

James Klassen: /* 12.3.2.6. Liquid Membrane Flashing */

2026-10-23T15:21:31Z

‎12.3.2.6. Liquid Membrane Flashing

James Klassen: /* 12.2.1.4. {{hilite | Liquid Membrane Flashing || 2026-October-31 }} */

2026-10-23T15:18:15Z

‎12.2.1.4. {{hilite | Liquid Membrane Flashing || 2026-October-31 }}

James Klassen: /* 10.3.3.4. Liquid Membrane Flashing */

2026-10-23T15:14:09Z

‎10.3.3.4. Liquid Membrane Flashing

James Klassen: /* 9.2.1.1. Membrane Composition, Thickness, and Selection */

2026-10-23T15:06:54Z

‎9.2.1.1. Membrane Composition, Thickness, and Selection

James Klassen: /* 9.2.1.1. Membrane Composition, Thickness, and Selection */

2026-10-23T15:04:53Z

‎9.2.1.1. Membrane Composition, Thickness, and Selection

James Klassen: /* 10.2.1.1. Flashing Membranes */

2026-10-23T14:52:00Z

‎10.2.1.1. Flashing Membranes

James Klassen: /* 14.3.2.7. Structures and Equipment */

2026-10-22T21:11:23Z

‎14.3.2.7. Structures and Equipment

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

2026-10-22T20:49:15Z

‎14.1.3.13. Structures and Equipment

James Klassen: /* 14.1.3.12. Vegetated Roof Systems */

2026-10-22T20:48:33Z

‎14.1.3.12. Vegetated Roof Systems

James Klassen: /* 13.3.2.3. Cap Flashing, Counter-flashing, and Reglet Flashing */

2026-10-22T17:59:45Z

‎13.3.2.3. Cap Flashing, Counter-flashing, and Reglet Flashing

@@ Line 4,048: / Line 4,048: @@
 </ol></li>
 <li>{{hilite | Liquid membrane flashing systems may not be used on plastic substrates|| 2025-October-25 }}.
-<li>{{hilite | When liquid membrane flashing systems are required or specified|| 2026-October-31 }}, only two--component fleece-reinforced catalyzed polymethyl methacrylate (PMMA) and polyurethane methyl methacrylate (PUMA) liquid membrane flashing systems may be used
 <ol>
 <li>on the ''drainage plane'',
@@ Line 4,057: / Line 4,058: @@
 <li>for sheet membrane reinforcement (i.e., at corners).
 </ol></li>
-<li>Two-component fleece-reinforced catalyzed polymethyl methacrylate (PMMA) and polyurethane methyl methacrylate (PUMA) liquid membrane flashing systems {{strike| must be accepted by the '''''Guarantor''''' and listed in [[Division_C | Division C]], and || 2025-October-22 }}
+<li>{{hilite | In addition to the foregoing, liquid membrane flashings systems conforming to the material requirements in Sentence (1) of [[#12.2.1.4. Liquid Flashing Systems | Article 12.2.1.4.]] || 2027-October-31 }}
 <ol>
-<li>may be used
+<li>may be used {{hilite | (subject to the ''manufacturer's'' approval) || 2027-October-31 }}
 <ol>
 <li>{{hilite | where abrasion resistance is desirable|| 2021-February-7 }}, or
 <li>{{hilite | where the ''Design Authority'' specifies its application. || 2023-June-16 }}
 </ol></li>
 <li>shall be applied to ensure that
 <ol>
 <li>the rate of application conforms to the ''manufacturer's'' published instructions, unless superseded by this Standard,
-<li>the base coating of catalyzed liquid membrane resin evenly and fully covers the masked area,
+<li>the {{hilite | base coat of liquid membrane is|| 2027-October-31 }} evenly and fully covers the masked area,
-<li>the manufacturer’s reinforcement fleece {{hilite | is cut to|| 2021-February-7 }} cover the masked area, to within 4.76 mm (1/8”) of all edges,
+<li>the manufacturer’s reinforcement {{hilite | material is set in from the edge of the masked area no more than 3.78 mm (1/8”),|| 2027-October-31 }}
-<li>the fleece is fully embedded in, and saturated with, the based coating of resin, and
+<li>{{hilite | the reinforcement is fully embedded in, and saturated with, the base coat, following the published instructions from the ''manufacturer'', and || 2027-October-31 }}
-<li>the fleece is evenly and thoroughly coated with a second application of catalyzed liquid membrane resin, covering the masked area.
+<li>{{hilite | the second coat evenly and thoroughly covers the base coat and reinforcement fabric. || 2027-October-31 }}
 </ol></li>
 </ol></li>
-<li>Where a fleece-reinforced 2-component catalyzed polymethyl methacrylate (PMMA) liquid membrane flashing system is used to terminate sheet membrane on the vertical plane, the liquid membrane flashing system must overlap the sheet membrane, and it must extend onto the vertical substrate above the sheet membrane, by no less than 50.8 mm (2") {{hilite | ('''Figure 12.3.2.-B''')|| 2026-October-31}}.
+<li>{{hilite | Regardless of where reinforced multi-coat liquid membrane flashing systems are used, application rates must follow the ''manufacturer’s'' minimum requirements, and the finished dry thickness (inclusive of reinforcement) must be at least 2.03 mm (80 mils) unless exceeded by the ''manufacturer’s'' minimum requirements. || 2027-October-31 }}
-<li>Fleece-reinforced 2-component catalyzed polymethyl methacrylate (PMMA) liquid membrane flashing system that is used as a substitute for sheet membrane flashing must be carried up a vertical plane {{hilite | above the ''finished system surface''|| 2026-October-31 }} at least 203.2 mm (8”), and no less than 203.2 mm (8") onto the horizontal field plane ({{hilite | See '''Figure 12.3.2.6.-A'''|| 2025-October-25}} {{hilite | and '''Figure 12.3.2.6.-B'''|| 2026-October-31}}).
+<li>{{hilite | Where a liquid membrane flashing system conforming to the material requirements in Sentence (1) of [[#12.2.1.4. Liquid Flashing Systems | Article 12.2.1.4.]]|| 2027-October-31 }} is used to terminate sheet membrane on the vertical plane, the liquid membrane flashing system must overlap the sheet membrane, and it must extend onto the vertical substrate above the sheet membrane, by no less than 50.8 mm (2") {{hilite | ('''Figure 12.3.2.-B''')|| 2026-October-31}}.
-<li>{{hilite | Single-component polyurethane and silicon-based liquid membrane flashing ''system''|| 2021-February-7 }}
+<li>{{hilite | A liquid membrane flashing system|| 2027-October-31 }} that is used as a substitute for sheet membrane flashing must be carried up a vertical plane {{hilite | above the ''finished system surface''|| 2026-October-31 }} at least 203.2 mm (8”), and no less than 203.2 mm (8") onto the horizontal field plane ({{hilite | See '''Figure 12.3.2.6.-A'''|| 2025-October-25}} {{hilite | and '''Figure 12.3.2.6.-B'''|| 2026-October-31}}).
 <ol>
 <li>{{hilite | may be used|| 2021-February-7 }}
 <ol>
-<li>{{hilite | to coat galvanized flashings used in the water plane, provided the application follows the requirements in [[#12.3.2.2. Galvanized Penetration Flashings | Article 12.3.2.2., "Galvanized Penetration Flashings"]]|| 2021-February-7 }},
+<li>{{hilite | to coat galvanized flashings used in the {{hilite | ''drainage plane''|| 2027-October-31 }}, provided the application follows the requirements in [[#12.3.2.2. Galvanized Penetration Flashings | Article 12.3.2.2., "Galvanized Penetration Flashings"]]|| 2021-February-7 }},
-<li>{{hilite | to flash details more than 101.6 mm (4”) above the water plane, that cannot be sealed with sheet-type membranes|| 2021-February-7 }}, or
+<li>{{hilite | to flash details more than 101.6 mm (4”) above the {{hilite | ''drainage plane''|| 2027-October-31 }} that cannot be sealed with sheet-type membranes|| 2021-February-7 }}, or
 <li>{{hilite | to seal pre-curb dowels (see [[#14.3.2.7. Structures and Equipment | Article 14.3.2.7.]])|| 2021-February-7 }}.
 </ol></li>
 <li>{{hilite | must not be used in the ''drainage plane'', or to reinforce membranes against abrasion|| 2021-February-7 }},
-<li>{{hilite | must be applied in two cured coats, unless otherwise permitted in this Standard|| 2021-February-7 }}, and
+<li>{{hilite | must be applied in two cured coats {{hilite | to achieve a minimum dry thickness of 1.52 mm (60 mils),|| 2027-October-31 }} unless otherwise permitted in this Standard|| 2021-February-7 }}, and
-<li>{{hilite | must be fleece-reinforced between coats where|| 2021-February-7 }}
+<li>{{hilite | {{hilite | must be reinforced|| 2027-October-31 }} between coats where|| 2021-February-7 }}
 <ol>
 <li>{{hilite | the application is considered permanent, || 2023-June-16 }}
@@ Line 4,099: / Line 4,094: @@
 </ol></li>
 </ol></li>
-<li>{{hilite | Accessory PMMA detailing products|| 2021-February-7 }}
+<li>{{hilite | Accessory detailing products || 2027-October-31 }}
 <ol>
-{{strike| must be accepted by the '''''Guarantor''''', acceptable to the ''manufacturer'', and listed in [[Division_C | Division C]], || 2025-October-22 }}
+<li>{{hilite | shall not be used as a substitute for reinforced liquid membrane flashing systems accepted for use in the ''drainage plane'', || 2027-October-31 }}
-{{strike| {{hilite | must be|| 2021-October-30 }} reinforced with chopped or loose fibres,|| 2025-October-22 }}
+<li>{{hilite | must be used at locations  101.6 mm (4”) or more above the {{hilite | ''finished system surface''|| 2026-October-31 }}{{strike| ''drainage plane'' || 2025-October-22 }}|| 2021-February-7 }}, {{hilite | except where complex details, such as bolt heads, cannot be properly sealed with a {{hilite | fabric-reinforced liquid flashing system|| 2027-October-31 }} || 2021-October-30 }}, and
 <li>{{hilite | must not be used where movement is expected|| 2021-February-7 }}.
 </ol></li>
@@ Line 4,111: / Line 4,104: @@
 ::{|
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 12.3.2.6.-A Application Requirements for PMMA on Roof Penetration''' || 2025-October-25 }}<br>{{hilite | Forming Part of Sentence 12.3.2.6.(4) || 2025-October-25 }}<br><small>(Click to expand illustration)</small>
+| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 12.3.2.6.-A Application Requirements for Reinforced Liquid Membrane Flashing System''' || 2027-October-31 }}<br>{{hilite | Forming Part of Sentence 12.3.2.6.(6) || 2025-October-25 }}<br><small>(Click to expand illustration)</small>
 |-
 |  [[File:Figure 12.3.-B (Generic).jpg  |link=https://rpm.rcabc.org/images/7/75/Figure_12.3.-B_%28Generic%29.jpg  | 500 px]]
@@ Line 4,118: / Line 4,111: @@
 ::{|
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 12.3.2.6.-B Illustration of Various Liquid Membrane Flashing Applications''' || 2026-October-31 }}<br>{{hilite | Forming Part of Article 12.3.2.6. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
+| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 12.3.2.6.-B Illustration of Various Liquid Membrane Flashing Applications''' || 2027-October-31 }}<br>{{hilite | Forming Part of Article 12.3.2.6. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
 |-
 | [[File:Part 12 - Figure 12.3.2.6.-B.png|link=https://rpm.rcabc.org/images/9/92/Part_12_-_Figure_12.3.2.6.-B.png | 800 px]]

@@ Line 3,749: / Line 3,749: @@
 </li></ol>
-====12.2.1.4. {{hilite | Liquid Membrane Flashing || 2026-October-31 }}====
+====12.2.1.4. {{hilite | Liquid Flashing Systems|| 2027-October-31 }}====
 <ol>
-<li>{{hilite | Polymethyl methacrylate (PMMA) and polyurethane methyl methacrylate (PUMA) liquid membrane flashing systems must be || 2026-October-31 }}
+<li>{{hilite | Liquid membrane flashing systems suitable for applications permitted in [[#12.3.2.6. Liquid Membrane Flashing | Article 12.3.2.6.]] must be || 2027-October-31 }}
 <ol>
-<li>{{hilite | catalyzed 2-component systems, || 2026-October-31 }}
+<li>{{hilite | accepted by the '''''Guarantor''''' and listed in [[Division C | Division C]], || 2027-October-31 }}
-<li>{{hilite | fleece-reinforced with the manufacturer's proprietary polyester fleece, and || 2026-October-31 }}
+<li>{{hilite | proprietary to, or accepted by, the ''manufacturer'' of the primary membrane applied to the field system, || 2027-October-31 }}
-<li>{{hilite | accepted listed in [[Division C | Division C]] of this ''Manual''|| 2026-October-31 }}.
+<li>{{hilite | applied in multiple coats, and || 2027-October-31 }}
 </li></ol>
-<li>{{hilite | Single-component polyurethane and silicon-based liquid membrane flashing system must be listed in [[Division C | Division C]]. || 2026-October-31 }}
+<li>{{hilite | Liquid membrane flashing systems suitable for use as coatings, or to flash details more than 101.6 mm (4”) above the drainage plane (Sentence (7) of [[#12.3.2.6. Liquid Membrane Flashing | Article 12.3.2.6.]]) must be || 2027-October-31 }}
 <ol>
-<li>{{hilite | must be listed in [[Division C | Division C]], and || 2026-October-31 }}
+<li>{{hilite | accepted by the '''''Guarantor''''' and listed in Division C, and || 2027-October-31 }}
-<li>{{hilite | must be reinforced with chopped or loose reinforcement fibres supplied by the ''manufacturer''. || 2026-October-31 }}
+<li>{{hilite | proprietary to, or accepted by, the ''manufacturer'' of the primary membrane applied to the field system. || 2027-October-31 }}
 </li></ol>
 </li></ol>

@@ Line 2,705: / Line 2,705: @@
 <ol>
-<li>Two-component fleece-reinforced catalyzed polymethyl methacrylate (PMMA) liquid membrane flashing systems must be accepted by the '''''Guarantor''''' and listed in [[Division_C | Division C]], and
+<li>{{hilite | Liquid membrane flashing systems || 2027-October-22 }}
 <ol>
 <li>may be used
 <ol>
-<li>on the ''drainage plane'',
+<li>{{hilite | on the ''drainage plane''|| 2021-February-7 }},
 <li>where sheet membrane flashing may not be practical or even possible,
-<li>to terminate the top edge of sheet membrane flashing,
+<li>{{hilite | to terminate the top edge|| 2021-February-7 }} of sheet membrane flashing,
-<li>for sheet membrane reinforcement (i.e., at corners),
+<li>{{hilite | for sheet membrane reinforcement (i.e., at corners)|| 2021-February-7 }},
-<li>where abrasion resistance is desirable,
+<li>{{hilite | where abrasion resistance is desirable|| 2021-February-7 }},
-<li>where resistance to sheet membrane contamination is necessary, or
+<li>{{hilite | where resistance to sheet membrane contamination is necessary|| 2021-February-7 }}, or
-<li>where the ''Design Authority'' specifies its application.
+<li>{{hilite | where the ''Design Authority'' specifies its application. || 2023-June-16 }}
 </ol></li>
 <li>must be compatible with the primary sheet membrane flashing.
@@ Line 2,722: / Line 2,723: @@
 <ol>
 <li>the substrate must be clean, dry, free of contaminants, and primed, as directed by the flashing system manufacturer,
-<li>a base layer of catalyzed liquid membrane resin must be applied within the area masked for coverage,
+<li>{{hilite | a liquid membrane base coat|| 2027-October-31 }} must be applied within the area masked for coverage,
-<li>the base coating must be reinforced with the manufacturer’s fleece, cut to size so that the fleece is set in from the masked area no more than 3.78 mm (1/8”),
+<li>the base coating must be reinforced with the manufacturer’s {{hilite | proprietary material|| 2027-October-31 }},
-<li>the fleece must be fully saturated with liquid, following the published instructions from the ''manufacturer'', and
+<li>{{hilite | the reinforcement material must || 2027-October-31 }}
-<li>the embedded fleece must be coated with a second application of catalyzed liquid membrane resin, covering the masked area.
+<ol>
 </ol></li>
-<li>On vertical sheet membrane terminations, the liquid membrane flashing system shall provide no less than 50.8 mm (2") coverage, both above and below the sheet membrane termination.
+<li>On vertical sheet membrane terminations, the liquid membrane flashing system shall provide no less than 50.8 mm (2") coverage, both above and below the {{hilite | sheet membrane edge. || 2027-October-31 }}
-<li>Application rates and guidelines issued by the manufacturer of the liquid flashing product must be followed, unless superseded by these requirements (Ref. '''Figure 12.3.2.6.-A''').
+<li>{{hilite | Application rates must follow the ''manufacturer’s'' minimum requirements, and the finished dry thickness (inclusive of reinforcement) must be at least 2.03 mm (80 mils) unless exceeded by the ''manufacturer’s'' minimum requirements. || 2027-October-31 }}
-<li>Where a fleece-reinforced 2-component catalyzed polymethyl methacrylate (PMMA) or polyurethane methyl methacrylate (PUMA) liquid membrane flashing system serves as a substitute for sheet membrane flashing, the reinforced liquid membrane flashing system must extend at least 203.2 mm (8”) up the vertical plane, and no less than 203.2 mm (8") onto the horizontal field plane.
+<li>{{hilite | Where a reinforced liquid membrane flashing system|| 2027-October-31 }} serves as a substitute for sheet membrane flashing, the reinforced liquid membrane flashing system must extend at least 203.2 mm (8”) up the vertical plane, and no less than 203.2 mm (8") onto the horizontal field plane.
 <li>When a granule surface or textured finish is specified, the granules or texturing material must be broadcast into a third coat.
 </ol></li>

@@ Line 2,000: / Line 2,000: @@
 </li></ol>
 <li>Field membrane reinforcement scrim must be a spun-bonded polyester fabric weighing no less than 30 g/m2 (1.3 oz/yard2).
 </li></ol>

@@ Line 2,000: / Line 2,000: @@
 </li></ol>
 <li>Field membrane reinforcement scrim must be a spun-bonded polyester fabric weighing no less than 30 g/m2 (1.3 oz/yard2).
 </li></ol>

@@ Line 2,559: / Line 2,559: @@
 <ol>
 <li>Sheet membranes used {{strike| to flash parapets, curbs, walls, or joints || 2023-January-26 }} {{hilite | to flash the intersection of the roof field and perimeter walls || 2024-January-31 }} must conform to the membrane requirements found in [[#9.2.1.1. Membrane Composition, Thickness, and Selection | Article 9.2.1.1.]]
-<li>{{strike| Sheet membranes used to waterproof || 2023-January-26 }} When waterproofing the vertical plane of a {{strike| "High Wall" || 2023-January-26 }} {{hilite | ''tall parapet'' above the primary membrane ''roof system'' is specified as part of the ''Contractor's'' scope of work|| 2024-January-31 }}  (Ref. [[#10.1.4.3. Tall Parapets | Article 10.1.4.3.]] and [[#10.3.4.3. Tall Parapets | Article 10.3.4.3.]]), {{hilite | the membrane used on the vertical plane of the ''parapet'' shall || 2024-January-31 }}
+<li>When waterproofing a {{hilite | ''tall parapet'' above the primary membrane ''roof system'' is specified as part of the ''Contractor's'' scope of work|| 2024-January-31 }}  (Ref. [[#10.1.4.3. Tall Parapets | Article 10.1.4.3.]] and [[#10.3.4.3. Tall Parapets | Article 10.3.4.3.]]), the membrane shall
 <ol>
-<li>{{strike| must || 2023-January-26 }} be compatible with the primary membrane,
+<li>be compatible with the primary membrane,
-<li>{{strike| must || 2023-January-26 }} be self-adhering,
+<li>be self-adhering,
-<li>{{strike| shall || 2023-January-26 }} be declared suitable {{hilite | for the application || 2024-January-31 }} by the ''manufacturer'' {{hilite | (see || 2024-January-31 }} [[Notes to Hot Rubber Standard#A-10.2.1.1.(2)(3) | Note A-10.2.1.1.(2)(3)]]),
+<li>be declared suitable {{hilite | for the application || 2024-January-31 }} by the ''manufacturer'' {{hilite | (see || 2024-January-31 }} [[Notes to SBS Standard#A-10.2.1.1.(2)(3) | Note A-10.2.1.1.(2)(3)]]),
-<li>{{strike| shall || 2023-January-26 }} possess properties consistent with the design and characteristics of the ''wall'' assembly,
+<li>possess properties consistent with the design and characteristics of the ''wall'' assembly,
-<li>{{strike| must || 2023-January-26 }} possess a high softening point and a minimum flow temperature of 87.7°C (190°F) (ASTM D5147, "Standard Test Methods for Sampling and Testing Modified Bituminous Sheet Material") and
+<li>possess a high softening point and a minimum flow temperature of 87.7°C (190°F) (ASTM D5147, "Standard Test Methods for Sampling and Testing Modified Bituminous Sheet Material") and
-<li>{{strike| shall|| 2023-January-26 }} have a thickness no less than 1 mm (.040”).
+<li>have a thickness no less than 1 mm (.040”).
 </li></ol>
 <li><span class="principles">Some membranes may be susceptible to damage from bird droppings, pet urine, and chemical contamination (oils, solvents, or any discharge from a mechanical unit), and therefore they should be protected using measures designed in consultation with the ''manufacturer''</span>.
-<li>Fleece-reinforced liquid membrane flashing systems must be accepted by the '''''Guarantor''''' and proprietary to, or accepted by, the ''manufacturer''.
+<li>Liquid membrane flashing systems {{hilite | suitable for use in the ''drainage plane'', or for terminating sheet membrane flashing on ''walls'' and ''parapets''|| 2027-October-31 }}, must be
 </li></ol>

@@ Line 5,233: / Line 5,233: @@
 <li>Pre‐curbs ({{hilite | '''Figure 14.3.2.7.-A''' || 2025-October-25 }}) must
 <ol>
-<li>achieve a finished height at least 101.6 mm (4") above the ''drainage plane'' of the highest adjacent ''roof assembly'' (For an example of this see Construction Detail [[SBS Structural Planter | "Structural Planter"]]), and
+<li>achieve a finished height at least 101.6 mm (4") above the ''drainage plane'' of the highest adjacent ''roof assembly'' (See Construction Detail [[SBS Structural Planter | "Structural Planter"]]), and
 <li>be completely enveloped with fully adhered acceptable sheet or liquid membrane flashing (including all faces of drainage knock‐outs).
 </li></ol>
-<li>All planters and water features must be fully waterproofed on the inside; sheet membrane installation must conform to the requirements in [[#10.3.2.3. General Application Requirements for Perimeters and Walls | Article 10.3.2.3.]], and liquid membrane flashing shall conform to the requirements in [[#10.3.3.4. Liquid Membrane Flashing | Article 10.3.3.4.]]
+<br>
-<li>All membrane flashing shall terminate
+::{|
 <ol>
-<li>on the outside face of the planter wall, at least 50.8 mm (2”) below the upper edge, or
+<li>{{hilite | on the outside face of the planter wall, at least 50.8 mm (2”) below the upper edge, or || 2023-June-16 }}
-<li>on the inside face of the planter wall with a cut reglet ''linear metal flashing'', caulked with sealant and installed no less than 50.8 mm (2”) above the top surface of growing media.
+<li>{{hilite | on the inside face of the planter wall with a cut reglet ''linear metal flashing'', caulked with sealant and installed no less than 50.8 mm (2”) above the top surface of growing media {{hilite | ('''Figure 14.3.2.7.-B''')|| 2027-October-31 }}. || 2023-June-16 }}
 </li></ol>
 <br>
-:{|
+::{|
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 14.3.2.7.-A Pre-curbs and Sheet Membrane Flashing''' || 2025-October-25 }}<br>{{hilite | Forming Part of Article 14.3.2.7. || 2025-October-25 }}<br><small>(Click to expand illustration)</small>
+| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 14.3.2.7.-B<br>Waterproofing Termination With Cut Reglet''' || 2027-October-31 }}<br>{{hilite | Forming Part of Sentence 14.3.2.7.() || 2027-October-31 }}<br><small>(Click to expand illustration)</small>
 |-
-| [[File:SBS Figure 14.3.1.jpg|link=http://rpm.rcabc.org/images/5/5b/SBS_Figure_14.3.1.jpg | 450 px]]
+| [[File:Illustration Unavailable (Filler Image).png |class=img-responsive | link= | 500 px]]
 |}
+<li>{{hilite | Structural installations that do not incorporate pre-curbs must be || 2023-June-16 }}
 <li>Dowels (reinforcement bar) must be
 <ol>
@@ Line 5,268: / Line 5,273: @@
 <li>applied to properly prepared surfaces,
 <li>fully cured between coats,
-<li>in keeping with the application requirements in [[#10.3.3.4. Liquid Membrane Flashing | Article 10.3.3.4.]], for 2-component reinforced liquid membrane flashing, or the manufacturer’s instructions, when using a single-component liquid membrane flashing, and</span>
+<li>in keeping with the application requirements in [[#10.3.3.4. Liquid Membrane Flashing | Article 10.3.3.4.]], for 2-component reinforced liquid membrane flashing, or the manufacturer’s instructions, when using a single-component liquid membrane flashing, and
 <li>applied no less than 50.8 mm (2”) on vertical surfaces and in a radius around the base of each dowel.
 </li></ol>

@@ Line 4,948: / Line 4,948: @@
 <ol>
-<li>Non-structural installations superimposed on a ''roof assembly''
+<li>{{hilite | Floating prefabricated components or structures|| 2027-October-31 }} superimposed on a ''roof assembly'', {{hilite | including precast concrete planter walls ('''Figure 14.1.3.13.-A'''), || 2027-October-31 }}
 <ol>
 <li><span class="recommended">are recommended for smaller installations, to</span>
 <ol>
-<li><span class="recommended">minimize the number of penetrations, curbs, or sleepers necessary for structural securement</span>,
+<li><span class="recommended">{{hilite | simplify waterproofing and minimize potentially vulnerable changes in plane or other details|| 2027-October-31 }}</span>,
 <li><span class="recommended">avoid dedicated mechanical drainage</span>, and
 <li><span class="recommended">simplify removal of materials when membrane repairs are required</span>.
 </li></ol>
 <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>must be placed on an appropriate protection layer or supported by pedestals, pavers, or other means of distributing weight and point loading,
-<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"]]).
+<li>{{hilite | shall be installed above a drainage layer with suitable supports, and || 2027-October-31 }}
 </li></ol>
-<li>{{hilite | Structurally supported || 2025-October-25 }} installations that are
+<br>
 <ol>
-<li>'''cast-in-place''' must be constructed on a pre‐curb that is continuously waterproofed as part of the primary roof membrane and waterproofed independently of the primary roof membrane.
+<li>{{hilite | the wall must be constructed on a pre‐curb that is || 2027-October-31 }}
 <ol>
-<li>to a pre‐curb that is continuously waterproofed as a continuation of the primary roof membrane, or
+<li>{{hilite | continuously waterproofed as part of the primary waterproofing, and || 2027-October-31 }}
-<li>to structural supports that are waterproofed in keeping with the requirements in [[#Part 12 - Penetrations and Curbs | Part 12]].
+<li>{{hilite | waterproofed independently of the primary roof membrane|| 2027-October-31 }}
 </li></ol>
 </li></ol>
-<li>When concrete walls or structures are constructed without a pre-curb, all concrete surfaces must be fully and continuously enveloped with the primary roof membrane (See also [[Guarantee#3.2.1.2. Limitations and Exclusions of Guarantee | Division A, Article 3.2.1.2.]]).
+<br>
 <li>Pre‐curbs must be
 <ol>
 <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>completely enveloped with fully adhered acceptable membrane flashing (including all faces of drainage knockouts), and
 <li>properly waterproofed around dowels {{hilite |in their final position, using|| 2021-February-7 }}
 <ol>
 <li>{{hilite | a 2-component catalyzed polymethyl methacrylate (PMMA) or polyurethane methyl methacrylate (PUMA) reinforced liquid membrane flashing system|| 2021-February-7 }}, or
-<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>{{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 }}{{hilite | (See '''Figure 14.3.2.7.-B'''). || 2027-October-31 }}
 </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
+<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 }}, or
-<ol>
+<li>drainage knockouts in the pre-curb ''wall'', which {{hilite | should be at least 381 mm (15”) when flashing with sheet membrane|| 2027-October-31 }} to allow for the free flow of water over or past the membrane flashing plies {{hilite | (See '''Figure 14.1.3.13.-F'''). || 2027-October-31 }}
 </li></ol>
 <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 4,942: / Line 4,942: @@
 <ol>
-<li>{{hilite | ''Vegetated Roof Systems'' (VRS) must be designed to meet the requirements in the|| 2025-October-25 }} [https://rpm.rcabc.org/index.php?title=VRA_Standard {{hilite |“RGC Standard for Vegetated Roofs”|| 2025-October-25 }}]{{hilite |; this includes membrane protection, drainage, water retention materials, filter fabrics, etc.|| 2025-October-25 }}
+<li>''Vegetated Roof Systems'' (VRS) must be designed to meet the requirements in the [https://rpm.rcabc.org/index.php?title=VRA_Standard RGC Standard for Vegetated Roofs]; this includes membrane protection, drainage, water retention materials, filter fabrics, etc.
 </li></ol>

@@ Line 4,637: / Line 4,637: @@
 </li></ol>
 <li>{{hilite | {{hilite | {{strike| Unless otherwise permitted in this Standard or by a written Variance from the '''''Guarantor''''', hidden clips|| 2025-October-22 }} Cleats (wind clips) || 2026-October-31 }} shall be secured to the vertical face of a ''parapet {{strike| wall || 2025-October-22 }}'' and shall not be mechanically attached to the top face {{strike| of the coping || 2025-October-22 }} unless otherwise permitted in this Standard or by a written Variance from the '''''Guarantor'''''. || 2024-January-31 }}
-<li>Where cleats (“wind clips”) are required, they must
+<li>Where cleats (“wind clips”) are required,
 <ol>
-<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>{{hilite | they shall|| 2027-October-31 }} conform to the fabrication requirements in [[#13.2.2.1. Fabrication of Flashing | Article 13.2.2.1.]],
-<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>{{hilite | they may be fashioned with an upper leg that rests on the ''parapet'' coping (See '''Figure 13.3.2.3.-A''') but must not be fastened through the top leg, and || 2027-October-31}}
 </li></ol>
 <br>
@@ Line 4,646: / Line 4,647: @@
 |-
 |-
-| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 13.3.2.3.-A<br>General requirements for<br>cap flashing securement''' || 2026-October-31 }}<br>{{hilite | Forming Part of Article 13.3.2.3. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
+| colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 13.3.2.3.-A<br>General requirements for<br>cap flashing securement''' || 2027-October-31 }}<br>{{hilite | Forming Part of Article 13.3.2.3. || 2026-October-31 }}<br><small>(Click to expand illustration)</small>
 |-
 | [[File:Part 13 - Illustration - Figure 13.3.2.3.-A.png|link=https://rpm.rcabc.org/images/b/b9/Part_13_-_Illustration_-_Figure_13.3.2.3.-A.png | 600 px]]