[CCMC 13473-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.

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Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as a cold, liquid-applied polyurethane roofing membrane in accordance with the conditions and limitations stated in this evaluation, complies with the following code:

National Building Code of Canada 2015

Code provision Solution type
9.26.1.2.(1) Roofs shall be protected with roofing, i ...Acceptable
9.26.2. Roofing MaterialsAlternative

Ontario Building Code

Ruling No. 13473-R (13473-R) authorizing the use of this product in Ontario, subject to the terms and conditions contained in the Ruling, was made by the Minister of Municipal Affairs and Housing on 2015-09-29 pursuant to s.29 of the Building Code Act, 1992 (see Ruling for terms and conditions). This Ruling is subject to periodic revisions and updates.


The above opinion is based on the evaluation by the CCMC of technical evidence provided by the evaluation holder, and is bound by the stated conditions and limitations. For the benefit of the user, a summary of the technical information that forms the basis of this evaluation has been included.

  Product information

Product name

FlexStone

Product description

The product is a roofing membrane system consisting of three distinct layers of liquid-applied polyurethane coatings that, once cured, form a seamless, monolithic roofing membrane.

The base coat (TUFF) is a water-catalyzed, aromatic urethane. The middle layer (COLORCOAT AR) is a single-component, aliphatic polyurethane. The top layer (MULT-I-GLAZE) includes acrylic flakes overlaid with a clear coat of single-component, aliphatic polyurethane (isocyanate saturated with polyester backbone).

Manufacturing plants

This evaluation is valid only for products produced at the following plants:

  • Fontana, California, United States

  Conditions and limitations

The CCMC’s compliance opinion is bound by this product being used in accordance with the conditions and limitations set out below.

  • The product must be installed on a concrete or plywood substrate that provides positive drainage, where the minimum roof slope is 1 in 50 and the maximum is 1 in 25.
  • When the product is used in buildings requiring a fire classification as per the NBC 2015, the product must be tested in accordance with the criteria in CAN/ULC-S107-10, “Methods of Fire Tests of Roof Coverings” in order to determine the product’s fire classification.
  • When the product is used in a roof assembly that requires a fire-resistance rating, the rating must be determined based on the results of tests conducted in conformance with CAN/ULC-S101-14, “Standard Methods of Fire Endurance Tests of Building Construction and Materials.”
  • The substrate must be free of debris, clean, and dry prior to installing the product.
  • The product must be installed by manufacturer-approved installers.
  • The product must be installed in accordance with the manufacturer’s installation instructions.
  • Usage of the product is limited to areas exposed to light, pedestrian traffic.
  • The packaging for the product containers must be identified with the following information:
    • manufacturer’s name or logo; and
    • the phrase “CCMC 13473-R.”

  Technical information

This evaluation is based on demonstrated conformance with the following criteria:

Evaluation requirements
Criteria number Criteria name
CCMC-TG-075610.02-15CCMC Technical Guide for Cold, Liquid-Applied Elastomeric Roofing Membrane (Exposed to Light Pedestrian Traffic)

CCMC’s Technical Guide for “Cold-Applied, Liquid, Elastomeric Roofing (Exposed to Light Pedestrian Traffic)” sets out the nature of the technical evidence required by the CCMC to enable it to evaluate a product as an acceptable or alternative solution in compliance with the NBC 2015. The Report Holder has submitted test results for CCMC’s evaluation. Testing was conducted at an independent laboratory recognized by the CCMC. The corresponding test results for “FlexStone” are summarized below.

 

Physical requirements
Results of testing of physical properties of “FlexStone”
Property Material layer Unit Requirement Result
Linear dimensional change in length FlexStone % ≤ ±1 −0.5
Linear dimensional change in width FlexStone % ≤ ±1 −0.4
Water absorption Base coat with middle coat % ≤ ±3 2
Tensile strength (tension) Base coat MPa Report value 2.55
FlexStone ≥ 1.86 2.92
Elongation Base coat % Report value 364
FlexStone ≥ 200 250
Water vapour permeance FlexStone ng/(Pa·s·m2) Report value 69.4
Flexibility – mandrel bend Base coat - No cracking or flaking Pass
Tear resistance Base coat kN/m ≥ 5.8 10.0
Abrasion resistance FlexStone mg ≤ 50 8
Indentation hardness Base coat Durometer units Report value 58
FlexStone 82 ± 5 69Table footnote (1)
Static puncture Base coat

 

N

4 out of 5 samples ≥ 150 and must pass watertightness test 5 out of 5 at 23 ± 2°C
Base coat 5 out of 5 at −15 ± 2°C
Dynamic impact (puncture) Base coat

 

J

20 out of 24 samples ≥ 9 and must pass watertightness test 24 out of 24 at 23 ± 2°C
Base coat 24 out of 24 at −15 ± 2°C
Peel adhesion Base coat N/m ≥ 875 concrete 1 043
Base coat ≥ 525 plywood 1 303
Crack bridging as received Base coat - No evidence of cracking, splitting, pinholes or loss of adhesion Pass
Crack bridging after heat aging Base coat - No evidence of cracking, splitting, pinholes or loss of adhesion Pass
Performance requirements
Results of testing of performance properties of “FlexStone”
Property Material Layer Unit Requirement Result
Retention of tensile strength after H2O solution Base coat % of original ≥ 70 average

90 (2.30 MPa)

Retention of tensile strength after NaCl solution Base coat % of original ≥ 70 average

85 (2.17 MPa)

Retention of tensile strength after heat aging Base coat % of original Report value

90 (2.30 MPa)

Retention of tensile strength after heat aging FlexStone % of original ≥ 90 average

95 (2.77 MPa)

Retention of elongation after heat aging Base coat % Report value

56 (204% of original)

Retention of elongation after heat aging FlexStone % ≥ 90 average

90 (225% of original)

Retention of tensile strength after accelerated weathering FL/UV – 5000 hours Base coat % of original Report value

85 (2.17 MPa)

Retention of tensile strength after accelerated weathering FL/UV – 5000 hours FlexStone % of original ≥ 90 average

85 (2.48 MPa)Table footnote (1) 

Retention of elongation after accelerated weathering FL/UV – 5000 hours Base coat % Report value

47 (171% of original)

Retention of elongation after accelerated weathering FL/UV – 5000 hours FlexStone % ≥ 90 average

82 (205% of original)Table footnote (2)

Glass transition before heat aging Base coat °C Report value −49.7
Glass transition after heat aging Base coat °C Report value −44.4
Change in glass transition (ΔTg) from before and after heat aging Base coat °C ≤ ± 8 5.3
Glass transition before accelerated weathering FL/UV – 5000 hours Base coat °C Report value −49.7
Glass transition after accelerated weathering FL/UV – 5000 hours Base coat °C Report value −46.3
Change in glass transition (ΔTg) from before and after accelerated weathering FL/UV – 5000 Base coat °C ≤ ± 8 3.4
Watertightness after static puncture Base coat - No leakage Pass at 23 ± 2°C
Base coat No leakage Pass at −15 ± 2°C
Watertightness after dynamic impact (puncture) Base coat - No leakage Pass at 23 ± 2°C
Base coat No leakage Pass at −15 ± 2°C

 

Administrative information

Disclaimer

This evaluation is issued by the Canadian Construction Materials Centre (CCMC), a part of the Construction Research Centre at the National Research Council of Canada (NRC). The evaluation must be read in the context of the entire CCMC Registry of Product Assessments and the legislated applicable building code in effect.

The CCMC was established in 1988 on behalf of the applicable regulator (i.e., the provinces and territories) to ensure—through assessment—conformity of alternative and acceptable solutions to regional building codes as determined by the local authority having jurisdiction (AHJ) as part of the issuance of a building permit.

It is the responsibility of the local AHJs, design professionals, and specifiers to confirm that the evaluation is current and has not been withdrawn or superseded by a later issue. Please refer to the website or contact:

Canadian Construction Materials Centre
Construction Research Centre
National Research Council of Canada
1200 Montreal Road
Ottawa, Ontario, K1A 0R6
Telephone: 613-993-6189
Fax: 613-952-0268

The NRC has evaluated the material, product, system or service described herein only for those characteristics stated herein. The information and opinions in this evaluation are directed to those who have the appropriate degree of experience to use and apply its contents (i.e., AHJs, design professionals and specifiers). This evaluation is only valid when the product is installed in strict compliance with the stated conditions and limitations of evaluation and the applicable local building code. In circumstances where no applicable local building permit is issued and that no confirmation of compliance ‘for use in the intended field application’ is undertaken, this evaluation is null and void in all respects. This evaluation is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the NRC provides no endorsement for any evaluated material, product, system or service described herein. The NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this evaluation with respect to its compliance to the referenced code(s) and standard(s). The NRC is not undertaking to render professional or other services on behalf of any person or entity nor to perform any duty owed by any person or entity to another person or entity.

Language

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In the case of any discrepancy between the English and French version of this document, the English version shall prevail.

Copyright

© 2021 Her Majesty the Queen in Right of Canada, as represented by the National Research Council of Canada.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the CCMC.

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