Template:Part 11 (Waterproofing Roofs - SBS) - Revision history

James Klassen: /* Flange-type Roof Drains */

2021-08-27T15:53:46Z

‎Flange-type Roof Drains

James Klassen: /* Liquid Membrane Flashing */

2021-07-20T15:18:10Z

‎Liquid Membrane Flashing

James Klassen: /* Roof Drains and Scuppers */

2021-07-09T20:29:08Z

‎Roof Drains and Scuppers

James Klassen at 20:19, 9 July 2021

2021-07-09T20:19:39Z

James Klassen: /* Definitions */

2021-07-09T15:39:48Z

‎Definitions

James Klassen: /* General */

2021-06-07T15:58:00Z

‎General

James Klassen: /* General */

2021-06-07T15:49:32Z

‎General

James Klassen: /* General */

2021-06-07T15:48:22Z

‎General

James Klassen at 16:12, 14 April 2021

2021-04-14T16:12:33Z

James Klassen at 21:36, 5 February 2021

2021-02-05T21:36:21Z

Show changes

@@ Line 368: / Line 368: @@
 #The cap membrane must overlap the base membrane patch, and terminate on the flange at the bowl.
 <div id="DRAIN_SCUPPER"></div>
 ====<big>Scuppers and Overflows</big>====

@@ Line 541: / Line 541: @@
 <li>{{hilite | there is a joint between two supports and the liquid membrane must serve as a bridge|| 2021-February-7 }}.
 </ol></li>
-<li>{{hilite | may not be used to terminate membranes, seal hard-flash penetrations at the water plane, or reinforce membranes against abrasion|| 2021-February-7 }}.
+<li>{{hilite | may not be used to terminate membranes, seal hard-to-flash penetrations at the water plane, or reinforce membranes against abrasion|| 2021-February-7 }}.
 </ol></li>
 <li>{{hilite | Accessory PMMA detailers {{hilite | must be|| 2021-October-30 }} reinforced with chopped or loose fibres, and|| 2021-February-7 }}

@@ Line 158: / Line 158: @@
 <li>'''Cast-iron Roof Drains''' must be
 <ol>
 <li>supplied with a sump receiver and under-deck clamp.
 <li>installed by the trade supplying the roof drain.

@@ Line 79: / Line 79: @@
 </li></ol>
 <div id="CURB_PENETRATION_DESIGN"></div>
 ===Design (Curbs and Penetrations)===
 ====RoofStar 15-Year Guarantee====
@@ Line 145: / Line 146: @@
 #Membranes used to flash (strip in) drains and penetrations shall be reinforced with polyester or a composite scrim, but in any event must conform to the membrane requirements found in '''9.2.1 Composition, Thickness and Selection'''.
 <div id="DRAIN_MATERIALS"></div>
 ===Roof Drains and Scuppers===
 <span class="reference">Roof drains are comprised mainly of two parts: a bowl or flange that is affixed to the roof deck with mechanical fasteners or a proprietary clamping mechanism; and an integral drain stem that connects the bowl or flange to the leader. Roof drains are sized according to the diameter of the drain stem.  As stated above under Section 1: Design, the appropriate size and number of roof drains for any given roof area is determined by the relevant building code in force (ref. ''British Columbia Plumbing Code, Division B – Part 2; 2.4.10.4 Hydraulic Loads from Roofs or Paved Surfaces'')</span>.
@@ Line 214: / Line 216: @@
 </li></ol>
 <div id="CURB_PEN_MATERIALS"></div>
 ===Curbs and Penetration Flashings===
 #All membrane-flashed roof flashings for cylindrical penetrations must be manufactured with materials and methods that meet or exceed the requirements set out in ''CSA B272, Prefabricated Self-Sealing Roof Vent Flashings''.  Testing by a qualified third party is required to verify compliance with this standard.
@@ Line 249: / Line 252: @@
 </li></ol>
 <div id="GENERAL_APPLICATION"></div>
 ==Application==
 ===General===
@@ Line 286: / Line 290: @@
 ##the top edge of membrane plies must be terminated on a vertical surface and other means of termination are not practicable or even possible.
 <div id="DRAIN_APPLICATION"></div>
 ===Roof Drains===
 ====<big>General</big>====
@@ Line 293: / Line 298: @@
 #When a 2-part liquid membrane flashing is specified for reinforcement of drain sumps, the liquid membrane flashing must continuously cover the sides of the sump, overlapping both the sump bottom and the roof field by at least 100 mm (4”).
 #{{hilite | When a roof supports ''overburden'' or is secured with ballast, drains must be installed together with a surrounding ballast guard that promotes water flow.  This requirement is in addition to the requirement for a separation space required for ''Vegetated Roof Systems''.  See also '''14.1.2.2.3''' ('''6''')|| 2020-July-3 }}.
 <div id="DRAIN_CAST"></div>
@@ Line 340: / Line 344: @@
 </li></ol>
 <div id="DRAIN_INSERT"></div>
 ====<big>Roof Drain Inserts (Replacement Roofing)</big>====
 <ol>
@@ Line 351: / Line 356: @@
 </li></ol>
 <div id="DRAIN_SPUN"></div>
 ====<big>Flange-type Roof Drains</big>====
 #Flange-type roof drains must be installed after the primary field base membrane has been fully installed.
@@ Line 361: / Line 367: @@
 #The cap membrane must overlap the base membrane patch, and terminate on the flange at the bowl.
 <div id="DRAIN_SCUPPER"></div>
 ====<big>Scuppers and Overflows</big>====
 #'''''Open scupper drains''''' may be constructed to match the height of the ''parapet'' or roof edge, and must be fully sealed with the field and perimeter membrane flashing.
@@ Line 368: / Line 375: @@
 ##any protrusion and its flashing.
 #'''''Scuppers''''' and '''''overflows''''' must be
 ##embedded in a layer of trowelled membrane-compatible mastic.
 ##primed on exposed flanges to receive membrane flashing.
@@ Line 374: / Line 382: @@
 ##flashed with cap membrane that overlaps the base and terminates on the flange.
 #Clamping collars must be securely installed as designed and where specified.
 <div id="CURB_PEN_INSTALLATION"></div>
 ===Curbs and Penetration Flashings===
 ====<big>General</big>====
@@ Line 494: / Line 503: @@
 </ol></li>
 <div id="CURB_PEN_ALTERANTIVES"></div>
 ====<big>Alternative Membrane Flashing Approaches</big>====
 #When field membranes or flashing plies are heat-welded, or if required by construction sequencing, site personnel must assess the best approach.
@@ Line 503: / Line 513: @@
 ###The application standards for flashings with flanges must then be followed (see '''11.3.3.1 General''').
 <div id="CURB_PEN_LIQUID"></div>
 ====<big>Liquid Membrane Flashing</big>====
 <ol>
@@ Line 564: / Line 575: @@
 |}
 <div id="CURB_PEN_POCKETS"></div>
 ====<big>Sealant Pockets</big>====
 #<span class="recommended">Sealing penetration flashings with sheet membranes or reinforced liquid membrane flashing should be considered impractical before pourable sealant pockets are used</span>.
@@ Line 575: / Line 587: @@
 ##sealant pockets must be sealed to the roof membrane.
 ##a site-formed non-bituminous flexible roof membrane storm collar must be fitted and secured to the penetration with stainless steel clamps.
 ===Guardrails===

@@ Line 19: / Line 19: @@
 :;''Secondary roof drain'': means an alternate drainage path in the event of large rain events or significant snow melt, typically situated at a higher elevation than a ''primary roof drain''.
 ;:
 <div id="DRAIN_DESIGN"></div>
 ===Design (Drainage)===
 ====RoofStar 15-Year Guarantee====

@@ Line 287: / Line 287: @@
 ===Roof Drains===
 ====<big>General</big>====
 #Roof drains and cap membrane seams must be offset from each other at least 300 mm (12”), measured from the edge of the drain.
 #All insert-type drains shall be connected to internal leaders using only mechanical compression type seals. “O”- rings, mastics and caulking are not acceptable methods for sealing these types of drains to leaders.