[CCMC evaluation requirements] CAN/CGSB-37.54-95, Type 4, Class B

From: National Research Council Canada

This document provides a summary of the minimum requirements imposed by the Canadian Construction Materials Centre (CCMC) for all evaluations based on the below criteria document. Additional requirements may be imposed by the CCMC when necessary for a particular evaluation, and are detailed in the individual evaluation.

Criteria document


These evaluations apply to flexible polyvinyl chloride (PVC) membranes for use as roofing and waterproofing membranes.

The standard provides a basis for evaluating PVC membranes used on decking subject to pedestrian traffic, although additional criteria such as skid resistance, abrasion resistance and resistance to puncture from sustained loads may also be important. These additional criteria have not been included in these assessments.

The standard classifies the membranes into four types and four classes of products:

  • Type 1 - non-reinforced - for flashing only;
  • Type 2 - containing embedded fibres;
  • Type 3 - with a non-embedded fabric backing; and
  • Type 4 - reinforced with an embedded fabric.
  • Class A - non-exposed roofing;
  • Class B - exposed roofing;
  • Class C - waterproofing; and
  • Class D - asphalt compatible.

Where Class A or C membranes have been subjected to only 600 hours of accelerated weathering, their class shall be designated as:

  • Class A - non-exposed roofing: low ultraviolet (UV) exposure; and
  • Class C - waterproofing: low ultraviolet (UV) exposure.

The following evaluation requirements are for a Type 4, Class B product

Material requirements

The evaluation holder must demonstrate that the product meets the following requirements (additional requirements may be imposed by the CCMC when necessary, and are detailed in the individual evaluation):

Material requirements Footnote (1)
Property Unit Requirements
Overall thickness mm 1.2
Coating thickness Footnote (2) mm 0.4
Tensile strength MPa n/a Footnote (3)
Breaking strength kN/m 35
Elongation at break % 15 Footnote (4)
Initial lap joint strength Footnote (5) % of tensile/breaking strength 75
Lap joint strength after 7 d in boiling water Footnote (6) % of tensile/breaking strength 70
Low-temperature impact 8 out of 10 pass
Retention of properties after heat aging – tensile/breaking strength % of original 90
Retention of properties after heat aging – elongation Footnote (4) % of original 90
Retention of properties after heat aging – low-temperature flexibility % of original Pass
Low-temperature flexibility Pass
Resistance to accelerated weathering – visual inspection No cracking, blistering or appreciable colour change
Resistance to accelerated weathering – elongation % of original Footnote (4) 90
Resistance to accelerated weathering – low-temperature impact 8 out of 10 pass
Resistance to accelerated weathering – low-temperature flexibility Pass
Water vapour transmission Max. g/m 2 in 24 h 4.0
Effect of water absorption – mass increase Maximum % 3.0
Effect of water absorption – tensile breaking strength % of original 90
Effect of water absorption – elongation % of original Footnote (4) 90
Dimensional change without loading Maximum % 0.5
Dimensional change with loading – machine direction Maximum % 0.5
Dimensional change with loading – cross-machine direction Maximum % 0.2
Core penetration N 30

Additional information

If stated in the Listing, the proponent has provided information related to:

Fire classification of roof covering

The membrane was tested in accordance with CAN/ULC-S107-10, “Standard Methods of Fire Tests of Roof Coverings.”

Fire-resistance rating

The membrane used in a roofing assembly was tested in accordance with CAN/ULC-S101-14, “Standard Method of Fire Endurance Test of Building Construction and Materials.”

Wind uplift resistance of membrane-roofing assemblies

The membrane used in a roofing assembly tested in accordance with CAN/CSA-A123.21-10, “Dynamic Wind Uplift Resistance of Membrane-Roofing Systems.”

© Canadian General Standards Board. This standard is withdrawn by CGSB due to limited use and support for their revision. Therefore, the information contained therein may no longer represent the most current, reliable, and/or available information on these subjects. CGSB hereby disclaims any and all claims, representation or warranty.

Installation requirements

The CCMC requires that evaluation holders provide instructions for the installation of the product(s) that:

Additionally, polyvinyl chloride sheet applied roofing membrane shall be installed in accordance with the manufacturer’s instructions and CGSB 37-GP-55M, “Application of Sheet Applied Flexible Polyvinyl Chloride Roofing Membrane.”

Manufacturing requirements

The CCMC requires that evaluation holders, at a minimum, demonstrate that the associated production process:

Labelling requirements

The CCMC requires that evaluation holders ensure that product labels:

Additionally, the containers holding the rolled material must be suitably marked to show the following information:

  • manufacturer or distributor’s name;
  • trade name of the product;
  • type and class;
  • the phrase “Low UV exposure” (if applicable);
  • recommended adhesives (if applicable);
  • the phrase “CAN/CGSB-37.54-95” (indicating conformance to the standard);
  • mass; and
  • coverage.

Classification information

Products falling within the scope of this document are commonly classified by:


  • 07 50 00 Membrane Roofing
  • 07 54 19 Polyvinyl-Chloride Roofing

Published CCMC evaluations

The following products have been evaluated to these requirements by the CCMC:

CCMC number:Manufacturer:Product name(s):
13293-LTuff Industries Inc. Tufdek
13299-LDuro-Last Roofing Inc. Duro-Last® 50-Mil Membrane, Duro-Last® 60-Mil Membrane
13680-LProtan AS Protan International Roofing PROTAN SE1.8
13695-LDuro-Last Roofing Inc. Duro-Fleece Plus
14011-LDuro-Last Roofing Inc. Duro-Fleece
14012-LDuro-Last Roofing Inc. Duro-Tuff
13312-LCarlisle SynTec Canada Sure-Flex™ PVC, Sure-Flex™ KEE-HP
13574-LMule-Hide Products Co. Inc. Mule-Hide PVC Membrane
14437-LFirestone Building Products CanadaFirestone PVC Membrane, Firestone PVC XR Membrane, Firestone PVC KEE Membrane, Firestone PVC KEE XR Membrane

Code references

National Building Code of Canada 2015

Code references Code provision
Table Applicable to Environmental Separators and Assemblies Exposed to the Exterior
Table Roofing materials
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