[CCMC 14173-R] CCMC Canadian code compliance evaluation
From: National Research Council Canada
5050 South Service Rd., Unit 200
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It is the opinion of the Canadian Construction Materials Centre that the evaluated products, when used as metal roofing in accordance with the conditions and limitations stated in this evaluation, comply with the following code:
National Building Code of Canada 2015
|ID||Code provision||Solution type|
|09-03-03-02-00-0-00||18.104.22.168. Galvanized Sheet Steel||Acceptable|
|09-26-01-02-00-0-00||22.214.171.124.(1) Roofs shall be protected with roofing, i ...||Acceptable|
|09-26-02-00-00-0-00||9.26.2. Roofing Materials||Alternative|
The above opinion(s) is/are 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.
- Vicwest True Nature Cedar CreekTM Shake
- Vicwest True Nature Coastal Wave™
- Vicwest True Nature North RidgeTM Slate
Vicwest's True Nature Cedar Creek™ Shake, True Nature North Ridge™ Slate, and True Nature Costal Wave™ tile 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 True Nature Cedar Creek™ Shake and the True Nature North Ridge™ Slate panels have a nominal measurement of 1 287 mm x 345 mm. The side edges of the True Nature Cedar Creek™ Shake and the True Nature North Ridge™ Slate panels have an interlocking overlap to allow for fitting between adjacent panels. 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 True Nature Coastal Wave™ tile has a nominal measurement of 1 295 mm x 368 mm. The side edges of the True Nature Coastal Wave™ tile have the first rib overlapping the last rib of the previous tile. The front edge is bent down to overlap the top edge of the lower tile. The top edge is formed to make a ledge to receive the lower edge of the upper tile and to accommodate fasteners.
Panels are to be installed working left to right.
The panels emulate the look of wood shake, stone slate, and a terracotta tile pattern. 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 plant:
|Product names||Manufacturing plant|
|Stratford, ON, CA|
|Vicwest True Nature Cedar CreekTM Shake||Product evaluated by the CCMC|
|Vicwest True Nature Coastal Wave™||Product evaluated by the CCMC|
|Vicwest True Nature North RidgeTM Slate||Product evaluated by the CCMC|
Product evaluated by the CCMC Indicates that the product from this manufacturing facility has been evaluated by the CCMC
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, True Nature North Ridge™ Slate and True Nature Coastal Wave™ 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 True Nature Cedar Creek™ Shake and True Nature North Ridge™ Slate panels must be no more than 195 mm on centre (o.c.), using the pre-drilled holes along the fastening tab on the top.
- Fastener spacing on the True Nature Coastal Wave™ tiles must be no more than 370 mm o.c. (every 2nd flute), with a minimum of 4 screws per tile.
- 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 Vicwest True Nature Coastal Wave™ tile metal roofing 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.
- Refer to manufacturer's installation instructions for restrictions on walkability on 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 Table footnote (1)|
|Pressure (kPa)||Time (s)||Requirement||Result Table footnote (1)|
|-0.5||10||No evidence of deformation, permanent damage or failure||Pass|
|-5.8||10||Max. sustained load Table footnote (2)|
Dynamic pressure water infiltration
|Wind speed (km/h)||Simulated rainfall (L/m2·min)||Time (min)||Requirement||Result Table 4 footnote (1)|
|80||3.4||5||No leakage or damage||Pass|
Use of Canadian Construction Materials Centre (CCMC) assessments
This assessment must be read in the context of the entire CCMC Registry of Product Assessments, any applicable building code or by-law requirements, and/or any other regulatory requirements (for example, the Canada Consumer Product Safety Act, the Canadian Environmental Protection Act, etc.).
It is the responsibility of the user to confirm that the assessment they are using is current and has not been withdrawn or superseded by a later version on the CCMC Registry of Product Assessments.
The National Research Council of Canada (NRC) has evaluated only the characteristics of the specific product described 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 (such as authorities having jurisdiction, design professionals and specifiers). This evaluation is valid when the product is used as part of permitted construction, respecting all conditions and limitations stated in the evaluation, and in accordance with applicable building codes and by-laws.
This evaluation is provided without representation, warranty or guarantee of any kind, expressed or implied, and the NRC provides no endorsement for any evaluated product. The NRC accepts no responsibility whatsoever arising in any way from any and all use of or reliance on the information contained herein or the use of any evaluated product. 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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© His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, 2023
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.