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[CCMC 13238-L] CCMC Standard compliance evaluation

From: National Research Council Canada

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

Learn more about CCMC recognition Look for the trusted CCMC mark on products to verify compliance.

Product information

Product name

Tolko OSB Rim Board Plus

Product description

The product is an oriented strandboard (OSB) that is manufactured to serve as a rim board. The product is available in three grades and three thicknesses. The factored resistances of the three grades are outlined in the “APA EWS Rim Board” table. The nominal depths are available to match engineered wood joist depths of up to 610 mm.

Technical product support is provided by APA – The Engineered Wood Association.

Manufacturing plants

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

Product nameManufacturing plants
Meadow Lake, SK, CASlave Lake, AB, CA
Tolko OSB Rim Board PlusProduct 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

  Technical information

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

Evaluation requirements
Criteria number Criteria name
ANSI/APA PRR 410-2016, Grade B1Standard for Performance Rated Engineered Wood Rim Boards
ANSI/APA PRR 410-2016, Grade B2Standard for Performance Rated Engineered Wood Rim Boards
ANSI/APA PRR 410-2016, Grade C2Standard for Performance Rated Engineered Wood Rim Boards

This evaluation covers rim boards manufactured by Tolko Industries Ltd. at the following plants:

Meadow Lake, Saskatchewan:

  • Grade B1: (Performance Category 1-¼ or higher)
  • Grade B2: (Performance Category 1-⅛ or higher)
  • Grade C2: (Performance Category 1 or higher)

Slave Lake, Alberta:

  • Grade B1: (Performance Category 1-¼ or higher)
  • Grade B2: (Performance Category 1-⅛ or higher)

Administrative information


This evaluation is issued by the Canadian Construction Materials Centre (CCMC), 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.


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.


© His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, 2022

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.