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[CCMC 14091-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

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Compliance opinion

National Building Code of Canada 2015

ID Code provision Solution type
09-29-10-04-00-0-009.29.10.4. Moisture-Resistant BackingAlternative
09-30-02-02-00-0-009.30.2.2. Materials and ThicknessAlternative

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 names

  • 1/2" HardieBacker® 500 backerboard
  • 1/4" HardieBacker® EZ Grid® underlayment
  • 1/4" HardieBacker® underlayment

Product description

HardieBacker® 6.4 mm (1/4 in.) underlayment, HardieBacker® 6.4 mm (1/4 in.) EZ Grid® underlayment, and HardieBacker® 10.3 mm (1/2 in.) 500 backerboard are fibre-cement boards made mainly of hydraulic Portland cement, and reinforced integrally with cellulose fibres.

HardieBacker® 6.4 mm (1/4 in.) underlayment is manufactured in the following dimensions:

  • 914 mm or 1 219 mm wide,
  • 1 524 mm or 2 438 mm long, and
  • nominally 6.4 mm thick.

HardieBacker® 6.4 mm (1/4 in.) EZ Grid® underlayment is manufactured in the following dimensions:

  • 914 mm wide,
  • 1 524 mm long, and
  • nominally 6.4 mm thick.

HardieBacker® 10.3 mm (1/2 in.) 500 backerboard is manufactured in the following dimensions:

  • 812 mm, 914 mm or 1 219 mm wide,
  • 1 524 mm or 2 438 mm long, and
  • nominally 10.3 mm thick.

HardieBacker® 6.4 mm (1/4 in.) underlayment and HardieBacker® 10.3 mm (1/2 in.) 500 backerboard have a smooth finished surface and square edges.

HardieBacker® 6.4 mm (1/4 in.) EZ Grid® underlayment has a smooth surface with a grid pattern and nail alignment feature. This assists installers by providing grid lines and marks for cutting to size and nail placement designed to facilitate building applications for the attachment of tile.

1. Length
2. Width
3 10.3 mm or 6.4 mm

Figure 1. HardieBacker® 10.3 mm (1/2 in.) 500 backerboard

  1. Length
  2. Width
  3. 10.3 mm or 6.4 mm

Manufacturing plants

This evaluation is limited to products produced at the following plants:

Product namesManufacturing plants
Cleburne, TX, USMcCarran, NV, USPeru, IL, USPulaski, VA, USTacoma, WA, US
1/2" HardieBacker® 500 backerboardProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMC
1/4" HardieBacker® EZ Grid® underlaymentProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMC
1/4" HardieBacker® underlaymentProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMCProduct evaluated by the CCMCProduct 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.

HardieBacker® 10.3 mm (1/2 in.) 500 backerboard

  • The product may be used as an interior backerboard on wood or metal studs for ceramic tile installations around showers, tubs and other interior areas requiring a moisture-resistant backing.
  • The product is not water impermeable. Any areas behind the product that must be kept totally free of moisture, water or steam must be protected by a water-impermeable membrane installed between the board and the framing.
  • The product must be installed and fastened with corrosion-resistant fasteners only.
  • The interior backerboard installation is limited to support spacing no greater than 400 mm on centre (o.c.) and must be carried out in accordance with the manufacturer’s instructions. In these installations, the panel is not providing appropriate bracing that complies with Subsection 9.23.13., Bracing to Resist Lateral Loads Due to Wind and Earthquake, of Division B of the NBC 2015. The product must not be used in areas that need to provide lateral strength or other structural loading resistance. 

HardieBacker® 6.4 mm (1/4 in.) and HardieBacker® 6.4 mm (1/4 in.) EZ Grid® underlayment

  • The products may be used as a panel-type underlay for resilient flooring, parquet flooring, ceramic tile, felted synthetic fibre floor coverings or carpeting. The products must be installed over subflooring that meets Subsection 9.23.15., Subflooring, of Division B of the NBC 2015, and in accordance with the manufacturer’s instructions.
  • The products may not be used as a panel-type underlay installed over lumber subflooring or panel-type subflooring whose edges are unsupported.
  • The products must not be used where they may be subjected to impact.
  • The products shall be fastened at least 9.5 mm (3/8 in.) from edge of board in all directions.
  • The products or their wrapping must be identified with the following information:
    • product name,
    • manufacturer’s name or logo, and
    • the phrase “CCMC 14091-R.”

  Technical information

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

Evaluation requirements
Criteria number Criteria name
CCMC-TG-092813.04-15CCMC Technical Guide for Cement Board

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

Material requirements
Table 1. Results of testing the water absorption requirements of the product
Property Unit Requirement Result
Water absorption
(48 h submersion)
10.3 mm (1/2 in.) % by weight Report value 34.0
6.4 (1/4 in.)  37.0

 

Performance requirements
Table 2. Results of testing the performance requirements of HardieBacker® 10.3 mm (1/2 in.) 500 backerboard
Property Unit Requirement Result
Humidified deflection ≤ 1/360 Pass
Linear variation machine direction % ≤ 0.20 0.08
cross-machine direction 0.07
Flexural strength MPa ≥ 5.17 5.40
Hardness core N ≥ 2 200 4 448Table footnote (1)
end 4 448
edge 4 448
Hard body impact resistance indentation dry mm ≤ 1.9Table footnote (2) 1.39
wet 1.87
failure load dry N∙m 10.9 No failure at 10.9
wet No failure at 10.9
Soft body impact resistance visual inspection  N/A No damage Pass
failure load N∙m 20.4 Pass
Fastener pull-through resistance  N ≥ 289 986
Fastener lateral resistance  dry N ≥ 400

1 027 at 
9.5 mm (3/8 in.) from edge

wet 769 at 
9.5 mm (3/8 in.) from edge

 

Table 3. Results of testing the performance requirements of HardieBacker® 6.4 mm (1/4 in.) and HardieBacker® 6.4 mm (1/4 in.) EZ Grid® underlayment
Property Unit Requirement Result
Linear variation machine direction % ≤ 0.20 0.07
cross-machine direction 0.09
Flexural strength MPa ≥ 5.17 5.26
Hardness core N ≥ 2 200 4 387
end 4 448
edge 4 367
Hard body impact resistance indentation dry mm ≤ 1.9Table footnote (1) 1.37
wet 1.24
failure load N∙m 10.9 FailsTable footnote (2)
Soft body impact resistance visual inspection N/A No damage Pass
failure load N∙m 20.4 FailsTable footnote (2)
Fastener pull-through resistance N ≥ 179 445
Fastener lateral resistance dry N ≥ 400 742 at 9.5 mm (3/8 in.) from edge
wet 525 at 9.5 mm (3/8 in.) from edge

 

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.

Disclaimer

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.

Language

Une version française de ce document est disponible.
In the case of any discrepancy between the English and French version of this document, the English version shall prevail.

Copyright

© 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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