[CCMC 14173-R] CCMC Canadian code compliance evaluation
From: National Research Council Canada
5050 South Service Rd., Unit 200
|Code compliance:||NBC 2015|
In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.Learn more about CCMC recognition
Code compliance opinion
It is the opinion of the Canadian Construction Materials Centre that Vicwest's True Nature Cedar Creek™ Shake and True Nature North Ridge™ Slate, when used as metal roofing in accordance with the conditions and limitations state in this evaluation, comply with the following Canadian code(s):
National Building Code of Canada 2015
|Code provision||Solution type|
|220.127.116.11.(1) Roofs shall be protected with roofing, i ...||Acceptable|
|9.26.2. Roofing Materials||Alternative|
|18.104.22.168. Galvanized Sheet Steel||Acceptable|
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 which forms the basis of this evaluation has been included.
Vicwest's True Nature Cedar Creek™ Shake and True Nature North Ridge™ Slate are sheet steel roofing systems consisting of a basic panel that is pressure-formed from 0.38 mm thick Galvalume® and installed directly on sloped roofs with a minimum slope of 1 in 4 that require a roofing underlay. The sheet steel is coated with a 10,000 series polyvinylidene fluoride (PVDF) paint system to resist weathering and rust.
The products have a nominal measurement of 1 287 mm x 345 mm. The butt edge is bent in on itself to form a lower locking mechanism. The top edge is formed to make a clip to receive the lower edge of the panel. The top edge also has a lip to receive the fasteners. The side edges have interlocking overlap to allow for fitting between adjacent panels. Panels are to be installed working left to right.
The panels emulate the look of wood shake and stone slate. All systems include accessory strips for hip and ridge cap, and associated flashings. The panels come in a variety of colours.
This evaluation is valid only for products produced at the following plants:
- Stratford, Ontario, Canada
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 CCMC's compliance opinion is bound by Vicwest's True Nature Cedar Creek™ Shake and True Nature North Ridge™ Slate being used in accordance with the conditions and limitations set out below.
- The panels must be installed on roofs having a minimum slope of 1 in 4.
- The products are limited to installations where no fire-resistance rating is required.
- The panels must be installed over solid sheathing in compliance with the requirements of Subsection 9.23.16., Roof Sheathing, of Division B of the NBC 2015.
- Flashing must be installed in compliance with the requirements of Subsection 9.26.4., Flashing at Intersections, of Division B of the NBC 2015.
- The panels must be installed with eave protection as indicated in Subsection 9.26.5., Eave Protection for Shingles and Shakes, of Division B of the NBC 2015.
- The panels must be installed with an underlay complying with the requirements of Subsection 9.26.6., Underlay beneath Shingles, of Division B of the NBC 2015 and as per manufacturer specifications. For slopes between 1 in 3 and 1 in 4, the underlayment must be a self-adhered membrane specified by the manufacturer.
- Only the panels with PVDF paint coatings are part of this evaluation. Panels with any other type of coating have not been evaluated by the CCMC.
- Only fasteners and accessories supplied by the manufacturer may be used in conjunction with the panels. The fasteners and accessories must be compatible with the base metal of the panels.
- Fastener spacing on the panels must be no more than 195 mm on centre (o.c.), using the pre-drilled holes along the fastening tab on the top.
- The Vicwest True Nature Cedar Creek™ Shake and True Nature North Ridge™ Slate metal roofing tiles must be installed by trained installers in strict conformance to the manufacturer's current instructions issued as of May 2021.
- The roofing systems are for use in locations where access is limited for maintenance or repair purposes. When access to the roof is needed, temporary walkways or roof boards are recommended to avoid any permanent damage to the panels.
- In case of any discrepancies between the conditions and limitations of this CCMC evaluation and the manufacturer's installation requirements, the conditions and limitations of the CCMC evaluation shall govern.
- The products or their packaging must be clearly identified with "CCMC 14173-R."
This evaluation is based on demonstrated conformance with the following criteria:
|Criteria number||Criteria name|
|CCMC-TG-074113-15A||CCMC Technical Guide for Metal Roof Panels|
|Thickness of base metal (mm)||≥ 0.33||-||0.44|
|Coating quality||Smooth and uniform, free of pinholes,
cracks, blisters and flaking
|Total dry film thickness (µm)||≥ 25||ASTM D 7091||27|
|Dry film hardness||No rupture||ASTM D 3363||Pass|
|Coating adhesion –dry||No removal of film||ASTM D 3359Table footnote (1)||Pass|
|Coating adhesion – wet||No removal of film||ASTM D 3359Table footnote (1)||Pass|
|Impact resistance||No removal of film||-||Pass|
|Salt spray resistance||≥ 7 ratingTable footnote (2)||ASTM B 117Table footnote (3)||7|
|Weathering (accelerated)||No sign of any color change,
chalking, or cracking
|ASTM G 155Table footnote (4)||Pass|
|Abrasion resistance||≥ 40||ASTM D 968||47|
|Acid resistance||No loss of integrity or
|Flexibility||No flaking or cracking||ASTM D 522, Test method B||Pass|
|Traffic load of 900 N||No signs of any plastic deformation or permanent openings at the lap that would adversely affect the function of the roofing system||Pass|
|Pressure (kPa)||Time (s)||Requirement||ResultTable 3 footnote (1)|
|-0.5||10||No evidence of deformation, permanent damage or failure||Pass|
Dynamic pressure water infiltration
|Wind speed (km/h)||Simulated rainfall (L/m2·min)||Time (min)||Requirement||ResultTable 4 footnote (1)|
|80||3.4||5||No leakage or damage||Pass|
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
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.
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© 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.