MARS Tested Roof Assemblies - Revision history

James Klassen at 18:51, 24 February 2025

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James Klassen at 21:04, 21 August 2023

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James Klassen at 15:29, 18 November 2021

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James Klassen at 15:23, 18 November 2021

2021-11-18T15:23:58Z

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James Klassen at 15:10, 18 November 2021

2021-11-18T15:10:09Z

James Klassen at 14:39, 7 October 2021

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James Klassen at 15:17, 5 October 2021

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James Klassen at 20:37, 26 July 2021

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James Klassen at 17:04, 23 February 2021

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 <big><big>Wind Uplift Resource Centre</big></big><br>

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 The tables on this page display a collection of test data and downloadable reports offered for the purpose of designing and constructing a roof capable of resisting negative wind pressures, commonly referred to as "wind uplift" loads.  The data and reports are offered without endorsement by the RCABC; they are provided as a courtesy by the '''''RoofStar Guarantee Program''''' to assist the ''Design Authority'' with the task of designing a roof that satisfies Code requirements, that meets the designer's specific and numerous design preferences, and that will qualify for a '''''RoofStar Guarantee'''''.
-The ''British Columbia Building Code'' (or the Code having jurisdiction) requires a roof to be capable of resisting ''Specified Wind Loads'' (see the ''British Columbia Building Code, Part 4 (4.1.7 Wind Loads) and Part 5 (5.2.2.2 Determination of Wind Load)'', inclusive of the notes in the appendices).  The reader will note that there are optional pathways by which a membrane roof design can comply with the Code.  One pathway is the use of a "Tested Assembly" - a roof assembly tested in controlled laboratory conditions to resist simulated wind pressures and gusts.  The test must be conducted in strict conformity to ''CSA-A123.21 Standard test method for the dynamic wind uplift resistance of membrane roofing systems'' (''CSA-A123.21'').  The results of the test are published in a report signed off by the accredited testing agency.  Each report details the materials and securement methods of the assembly.  Every detail in a Tested Assembly report is critical for the performance of a roof designed on the basis of the tested assembly.
+The ''British Columbia Building Code'' (or the Code having jurisdiction) requires a roof to be capable of resisting ''Specified Wind Loads'' (see the ''British Columbia Building Code, Part 4 (4.1.7 Wind Loads) and Part 5 (5.2.2.2 Determination of Wind Load)'', inclusive of the notes at the end of each Part).  The reader will note that there are optional pathways by which a membrane roof design can comply with the Code.  One pathway is the use of a "Tested Assembly" - a roof assembly tested in controlled laboratory conditions to resist simulated wind pressures and gusts.  The test must be conducted in strict conformity to ''CSA-A123.21 Standard test method for the dynamic wind uplift resistance of membrane roofing systems'' (''CSA-A123.21'').  The results of the test are published in a report signed off by the accredited testing agency.  Each report details the materials and securement methods of the assembly.  Every detail in a Tested Assembly report is critical for the performance of a roof designed on the basis of the tested assembly.
 ''CSA-A123.21'' classifies assembly tests by the method of securement, and these are simplified with three acronyms:

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-!		colspan="5" rowspan="1"; style="vertical-align:center;text-align:center; background-color:#54595d"	|		<span style="color:#fff">Tested Assembly Report Data</span>
+!		colspan="5" rowspan="1"; style="vertical-align:center;text-align:center; background-color:#4682b4"	|		<span style="color:#fff">Tested Assembly Report Data</span>
 !		colspan="3" rowspan="1"; style="vertical-align:center;text-align:center; background-color:#808080"	|		<span style="color:#fff">Primary Materials</span>
 !		colspan="4" rowspan="1"; style="vertical-align:center;text-align:center; background-color:#A9A9A9"	|		<span style="color:#fff">Other System Materials & Deck</span>
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 !		colspan="2" rowspan="1" style="vertical-align:top;background-color:#c8ccd1"	|		Dynamic Uplift Resistance
 !		class="unsortable" colspan="1" rowspan="2" style="vertical-align:center;text-align:center;"	|		Roof<br>Assembly<br>Summary
 !		class="unsortable" colspan="1" rowspan="2" style="vertical-align:center;text-align:center;"	|		Test Report
 !		class="unsortable" colspan="1" rowspan="2" style="vertical-align:center;text-align:center;" 	|		Cap<br>Membrane
 !		class="unsortable" colspan="1" rowspan="2" style="vertical-align:center;text-align:center;"	|		Base<br>Membrane
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 |	style="vertical-align:center;text-align:center;" |	<b>										-40	</b>
 |		<html><!-- Single button --><div class="btn-group"><button type="button" class="btn btn-warning dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">View summary<span class="caret"></span></button><ul class="dropdown-menu">										<li><a href="#"><b>EXAMPLE ONLY</b></a></li><li><a href="#"><b>Cap membrane</b>: application/securement method</a></li><li><a href="#"><b>Base membrane</b>: mechanically fastened</a></li><li><a href="#"><b>Insulation overlay</b>: (optional) various securement options</a></li><li><a href="#"><b>Insulation (top layer)</b>: mechanically fastened</a></li></li><li><a href="#"><b>Insulation (bottom layer)</b>: N/A</a></li><li><a href="#"><b>Air/Vapour control layer</b>: various securement options</a></li><li><a href="#"><b>Deck overlay (thermal barrier)</b>: various securement options</a></li><li><a href="#"><b>Roof deck</b></a></li>	</ul></div></html>
-|	style="vertical-align:center;text-align:center;" |											[[MARS Tested Roof Assemblies | '''Report link 1-A''']]
+|	style="vertical-align:center;text-align:center;" |											[[AARS Tested Roof Assemblies | '''Report link 1-A''']]
 |		<html><!-- Single button --><div class="btn-group"><button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">View options <span class="caret"></span></button><ul class="dropdown-menu">										<li><a href="#">Membrane Option 1</a></li><li><a href="#">Membrane Option 2</a></li><li><a href="#">Membrane Option 3</a></li>	</ul></div></html>
 |		<html><!-- Single button --><div class="btn-group"><button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">View options  <span class="caret"></span></button><ul class="dropdown-menu">										<li><a href="#">Membrane Option 1</a></li><li><a href="#">Membrane Option 2</a></li><li><a href="#">Membrane Option 3</a></li>	</ul></div></html>

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 Tested Assembly reports must always be read together with the '''''RoofStar Guarantee Standard''''' for the membrane system that is specified.  For example, a roof assembly might be tested with a particular material or in a particular way that does not conform to the Standard.  To conform to the Standard, some modifications to the Tested Assembly may be required, which may then preclude its use - for example, adding an insulation overlay panel where none was tested, because the assembly design requires one in order to conform to the Standard.
-When a conflict is apparent or obvious the ''Design Authority'' may find a way to 'yes' by examining the alternative materials listed in many Tested Assembly reports.  Alternatives include membranes, insulation overlays, insulation panels and roof deck overlays (commonly listed as "thermal layers").  Some materials are listed as "optional" which means that while the assembly was tested without the constituent material (a deck overlay, for example), the ''Design Authority'' may opt to use one of the materials listed in the report.  Drop-down menus of the tables displayed to the right (see the "View options" buttons) list Accepted Materials that can be used in each Tested Assembly.
+When a conflict is apparent or obvious the ''Design Authority'' may find a way to 'yes' by examining the alternative materials listed in many Tested Assembly reports.  Alternatives include membranes, insulation overlays, insulation panels and roof deck overlays (commonly listed as "thermal layers").  Some materials are listed as "optional" which means that while the assembly was tested without the constituent material (a deck overlay, for example), the ''Design Authority'' may opt to use one of the materials listed in the report.  Drop-down menus of the tables displayed to the right (see the "View options" buttons) list Accepted Materials that can be used in each Tested Assembly.  Air or vapour control layers are not listed, because the '''''RoofStar Guarantee Program''''' does not accept and list these materials within Division C of the RPM.
 If in doubt about how to use the Tested Assembly reports together with the '''''RoofStar Guarantee Standard''''', contact the [mailto:guarantees@rcabc.org '''''RoofStar Guarantee Program'''''] via email, or by calling (604) 882-9734.

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 <big><big>Tested Assemblies and RoofStar Guarantee Standards</big></big>
-Tested Assembly reports must always be read together with the '''''RoofStar Guarantee Standards''''' for the membrane system that is specified.  For example, a roof assembly might be tested with a particular material or in a particular way that does not conform to the Standards.  To conform to our Standards, some modifications to the Tested Assembly may be required, which may then preclude its use - for example, adding an insulation overlay panel where none was tested, because the assembly design requires one in order to conform to the '''''RoofStar Guarantee Standards'''''.
+Tested Assembly reports must always be read together with the '''''RoofStar Guarantee Standard''''' for the membrane system that is specified.  For example, a roof assembly might be tested with a particular material or in a particular way that does not conform to the Standard.  To conform to the Standard, some modifications to the Tested Assembly may be required, which may then preclude its use - for example, adding an insulation overlay panel where none was tested, because the assembly design requires one in order to conform to the Standard.
 When a conflict is apparent or obvious the ''Design Authority'' may find a way to 'yes' by examining the alternative materials listed in many Tested Assembly reports.  Alternatives include membranes, insulation overlays, insulation panels and roof deck overlays (commonly listed as "thermal layers").  Some materials are listed as "optional" which means that while the assembly was tested without the constituent material (a deck overlay, for example), the ''Design Authority'' may opt to use one of the materials listed in the report.  Drop-down menus of the tables displayed to the right (see the "View options" buttons) list Accepted Materials that can be used in each Tested Assembly.
-If in doubt about how to use the Tested Assembly reports together with the '''''RoofStar Guarantee Standards''''', contact the [mailto:guarantees@rcabc.org '''''RoofStar Guarantee Program'''''] via email, or by calling (604) 882-9734.
+If in doubt about how to use the Tested Assembly reports together with the '''''RoofStar Guarantee Standard''''', contact the [mailto:guarantees@rcabc.org '''''RoofStar Guarantee Program'''''] via email, or by calling (604) 882-9734.
 <div id="Substitutions"></div>
 <big><big>Accepted Materials and Material Substitutions</big></big>
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 We have selected Tested Assembly reports based on the membranes that will qualify for a '''''RoofStar Guarantee Program''''', but there are tested assemblies that include one or more ''Secondary Materials'' that are not ''Accepted'' by the '''''RoofStar Guarantee Program'''''.  Drop-down lists clearly show this by indicating when a material is "not accepted".  To ensure that the entire roof system complies with the Accepted Material requirements of the '''RoofStar Guarantee Program''', follow the requirements in '''3.2.1 Material Substitutions in Tested Assemblies''':
-:"When a manufacturer's Tested Assembly incorporates materials (and listed alternates) that are not part of the RoofStar Guarantee Program, the Design Authority must identify appropriate substitutions for those materials from the list of RoofStar-accepted Materials and consult the manufacturer concerning compatibility with the Tested Assembly. and direct the user to consult the membrane manufacturer in order to determine which ''Accepted'' materials will qualify as alternates."
+:"When a manufacturer's Tested Assembly incorporates materials (and listed alternates) that are not part of the '''''RoofStar Guarantee Program''''', the ''Design Authority'' must identify appropriate substitutions for those materials from the list of RoofStar-accepted Materials and consult the manufacturer concerning compatibility with the Tested Assembly. and direct the user to consult the membrane manufacturer in order to determine which ''Accepted'' materials will qualify as alternates."
 |}
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