[CCMC 14450-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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Compliance opinion

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as a high-density, polyurethane plastic cladding system in new and retrofit constructions falling under Part 9, Housing and Small Buildings, in accordance with the conditions and limitations stated in this evaluation, complies with the following code:

National Building Code of Canada 2015

ID Code provision Solution type
09-27-01-01-00-0- Where cladding materials other than thos ...Acceptable
09-27-02-00-00-0-009.27.2. Required Protection from PrecipitationAcceptable
09-27-02-02-00-0- Except as provided in Sentence ...Alternative
09-27-03-00-00-0-009.27.3. Second Plane of ProtectionAcceptable
09-27-12-00-00-0-009.27.12. Vinyl SidingAlternative

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.

Product information

Product name


Product description

The product is an exterior cladding system consisting of high-density polyurethane plastic panels that are either injection- or compression-moulded. The panels are profiled along the top- and right-side edges such that the horizontal and vertical joints are shiplapped. The exterior face of the panels are embossed to provide a masonry-like (natural stone or brick) pattern. The panels are available in different colours simulating natural stone.

installation of the cladding panel using mechanical fastener

Figure 1. NextStoneTM plastic cladding panel system

Manufacturing plant

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

Product nameManufacturing plant
Dongguan City, China
NextStone™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 cladding system is intended to be used over concrete, masonry, and plywood or oriented strandboard (OSB) sheathing installed over wood framing.
  • The cladding must not be used as an exterior wall covering in buildings that are required to be of noncombustible construction, or in buildings in which the exterior cladding is required to be noncombustible, in accordance with the NBC 2015.
  • Fasteners for the cladding must be corrosion-resistant, compatible with the cladding material, and positioned to permit expansion and contraction due to temperature changes. Use 62 mm (2 1/2 in.) No. 8 corrosion-resistant screws spaced at 406 mm (16 in.) on centre (o.c.).
  • The 19-mm air space that is created by furring incorporated behind the “NextstoneTM” cladding must remain unobstructed to form a clear drainage layer behind the cladding, and meet the NBC provision for low-permeance material as per Sentence, Position of Low Permeance Materials, of Division B of the NBC 2015.
  • The cladding must be installed in accordance with the manufacturer’s written installation guide (see NextStone™ Installation Guides).
  • The cladding must be installed with a suitable flashing that will drain water to the exterior and protect the exposed top edge of the cladding. Installed flashing must be in accordance with the requirements of Subsection, Flashing Materials of Division B of the NBC 2015.
  • At least one layer of sheathing membrane conforming to Article, Required Sheathing, of Division B of the NBC 2015, must be applied beneath the cladding.
  • A clearance of not less than 200 mm shall be provided between finished ground and cladding.
  • A clearance of not less than 50 mm shall be provided between a roof surface and cladding.
  • Conditions and limitations of this evaluation report shall supersede in case there are discrepancies between this evaluation report and the manufacturer’s written installation guide or manual.
  • This Evaluation Report is applicable only to products identified on the packaging with the phrase “CCMC 14450-R.”

  Technical information

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

Evaluation requirements
Criteria number Criteria name
CCMC-TG-074640-15CCMC Technical Guide for High Density Polyurethane Cladding

The evaluation holder has submitted technical documentation for CCMC’s evaluation. Testing was conducted at laboratories recognized by CCMC. The corresponding technical evidence for this product is summarized below.

Prescriptive requirements

Cladding material characteristics

Table 1. Test results for cladding material characteristics
Property Unit Requirement Results
DensityTable footnote (1) kg/m3 > 100 161
Tensile modulus MPa Report value 91
Compressive strength at 10% deformation MPa ≥ 1.0 1.9
Tensile strength at yield MPa Report value 2.5
Tensile strength at yield after ultraviolet (UV) resistance test % 80% of original value 115
Coefficient of linear expansion cm/cm/°C < 0.000081 0.000059
Flexural modulus MPa Report vaue 88
Flexural strength MPa ≥ 1 2.5
Loss of flexural strength % < 25 9.3
Abrasion resistance - No cracking, checking, or loss of finish at 100L of sand Pass
Water absorption % < 1% or 0.6 mg/cm2 (whichever is smaller) 0.4
Hardness of panel - Report value 325
Hardness after acid rain resistance test % 80% of original value 103
Loss of panel hardness % > 80 93

Dimensional tolerance

Test results for dimensional tolerance
Property Unit Requirement Result
Length and width mm ±3 Pass
Thickness mm ±1.6 Pass
Squareness mm ±4.0 Pass
Warpage mm 1:400 Pass
Slew mm/m ≤ 1.3 of length Pass
Edge straightness mm/m ≤ 1.3 of length and width Pass
Performance requirements

Cladding performance

Table 2. Test results for cladding performance
Property Unit Requirement Result
Impact resistance - The cladding system shall be capable of withstanding the applied impact loads without deterioration in the performance or safety of the system. Pass
Acid rain resistance - The surface shall not have any defects and/or occurrences of new voids. Pass
Fastener pull through N ≥400 443Table footnote (1)
Wind load resistance - The cladding system shall be capable of resisting and transmitting to its points of support the positive and negative forces that are generated by the design wind loads, without any fracture or permanent deformation of the surfaces resulting from such design wind loads. Pass at Q50 ≤ 0.85 kPa
(non-post-disaster buildings)Table footnote (2)Table footnote (3)Table footnote (4)
Durability - The durability of the cladding is assessed by observing changes in appearance (e.g., cracking, crazing) and by measuring the loss of flexural strength. Pass
Accelerated weathering resistance - No visual surface or physical change, such as cracking, flaking or other deleterious effects after 2 000 hours of UV exposure. Pass


Administrative information

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, 2024

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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