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[CCMC 08774-L] CCMC Standard compliance evaluation

From: National Research Council Canada

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

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Product information

Product name

Therm-O-Light (Type 1)

Product description

The product is a cellulose-fibre thermal building insulation made from paper or paperboard stock and modified with chemical additives.

Manufacturing plant

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

Product nameManufacturing plant
St. Thomas, ON, CA
Therm-O-Light (Type 1)Product 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
CAN/ULC-S703-09, Type 1Standard for Cellulose Fibre Insulation for Buildings

This product shall be installed as outlined in the Annex and according to the following application charts.

Open spaces coverage chart
RSI value (m2·K/W) Minimum applied thickness (mm) Minimum design (settled) thickness (mm) Mass per unit area (kg/m2) Coverage per 13.6-kg bag (m2) Coverage per 15.0-kg bag (m2)
2.1 92 82 2.0 6.7 7.4
3.5 153 136 3.4 4.0 4.4
5.6 244 218 5.4 2.5 2.8
7.0 305 272 6.8 2.0 2.2
8.8 381 341 8.5 1.6 1.8
10.6 458 409 10.2 1.3 1.5

Closed cavities coverage chart
RSI value (m2·K/W) Framing (mm) Mass per unit area (kg/m2) Coverage per 13.6-kg bag (m2) Coverage per 15.0-kg bag (m2)
2.3 38 × 89 4.3 3.2 3.5
3.6 38 × 140 6.7 2.0 2.2

For open spaces, the chart is based on a thermal resistance value of 25.9 m2·K/W and a design density of 25.8 kg/m2. For closed cavities, it is based on a thermal resistance value of 26.6 m2·K/W and a design density of 48.0 kg/m2.

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.