[CCMC 12959-R] CCMC Canadian code 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.

Compliance opinion

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as a polyester roof sheathing felt 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
05-06-01-01-00-0- Except as provided in Sentence ...Acceptable
09-26-01-02-00-0- Roofs shall be protected with roofing, i ...Acceptable
09-26-02-00-00-0-009.26.2. Roofing MaterialsAlternative
09-26-11-03-00-0- Roof FeltsAlternative

Ontario Building Code

Ruling No. 01-01-85 (12959-R) authorizing the use of this product in Ontario, subject to the terms and conditions contained in the Ruling, was made by the Minister of Municipal Affairs and Housing on 2001-10-15 (revised 2017-03-22) pursuant to s.29 of the Building Code Act, 1992 (see Ruling for terms and conditions). This Ruling is subject to periodic revisions and updates.

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

Polymax 180

Product description

The product is a polyester roof sheathing felt made of non-woven, spun-bonded, heat-stabilized polyester fabric that is impregnated with a roofing grade asphaltic bitumen to form a highly absorbent base sheet and ply sheet for built-up roofing (B.U.R.).

Typical installation of the product is shown in the following figure.

Figure 1. “Polymax 180”

Manufacturing plant

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

Product nameManufacturing plant
Surrey, BC, CA
Polymax 180Product 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 product is intended to be used as a base sheet and ply sheet in B.U.R. systems.
  • When the product is used in roof coverings installed on buildings governed by Part 3 of the NBC 2015, the roof covering must conform to a Class A, B or C classification determined in accordance with Article, Roof Covering Classification, of Division B of the NBC 2015.
  • When the product is used as part of a rated roof assembly governed by Part 3, Part 5, and/or Part 9 of Division B of the NBC 2015, the roof assembly must be rated according to Articles, Determination of Ratings, and, Fire-Resistance and Fire-Protection Ratings, of Division B of the NBC 2015.
  • A B.U.R. using the product must be constructed in accordance with Article and Subsection 9.26.11., Built-Up Roofs, of Division B of the NBC 2015. The product surfaces must be mopped dry to avoid blistering.
  • The product’s ply sheets are not watertight until totally saturated with hot asphalt. Exposed unfinished membranes must be kept dry and protected by an impermeable membrane until the product is fully covered with asphalt.
  • This Evaluation Report is applicable only to products identified by the phrase “CCMC 12959-R.”

  Technical information

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

Evaluation requirements
Criteria number Criteria name
CCMC-TG-075113.01-15CCMC Technical Guide for Roof Sheathing Felt
Performance requirements
Table 1. Results of testing of physical and mechanical properties of the product
Property Unit Requirement (type II)Table footnote (1) Result
Unit mass of matTable footnote (2) g/m2 ≥ 180 190
Minimum thickness mm ≥ 0.51 1.24
Breaking load kN/m ≥ 5.2

17.8 MD

Table footnote (3)

11.6 XD

Elongation % ≥ 25

44 MD

55 XD

Trapezoid tearing strength N ≥ 107

153.7 MD

152.6 XD

Puncture strength N ≥ 169 336.9
Heat distortion stability % change ≤ 2

1.1 MD

0.4 XD

Moisture at point of manufacture % ≤ 1.0 0
Mass of bituminous saturant (asphalt) g/mTable footnote (4) ≥ 308 395
Percentage of bituminous saturant % ≥ 170 206
Mass of comminuted surfacing (sand) g/m2 ≤ 100 5.95
Net dry mass of asphalt-impregnated polyester feltTable footnote (5) g/m2 ≥ 488 585
Pliability at 25ºC 12.7-mm (1/2-in.) radius bend - No failure Passed
Pliability at –5ºC 12.7-mm (1/2-in.) radius bendTable footnote (6) - No failure Passed
Loss on heating at 105ºC for 5 h % ≤ 4 0.25
Behaviour on heating - No flowing, sagging, blistering or absorption of the coating Passed
Water vapour permeance (desiccant method) n/g (Pa•s•m2) Report value 5382.98Table footnote (7)
Strain energy kN/m ≥ 3.0

6.05 MD

4.22 XD

Dynamic cold temperature cycling - Peel strength must be min. 80% of original value Passed
Straightness mm ≤ 50 5
Flatness dry mm ≤ 10 3
mopped - Comparable to flatness of modified bituminous sheet membrane Passed


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.


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, 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.

Date modified: