[CCMC 13105-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

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Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that the evaluated products, when used as roofing materials in new and existing constructions in accordance with the conditions and limitations stated in this evaluation, comply with the following code:

National Building Code of Canada 2015

ID Code provision Solution type
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

The above opinion is 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

  • Enviroshake®
  • Enviroslate®

Product description

“Enviroshake® and Enviroslate®” roofing tiles are manufactured from a mixture of industrial plastic(s), recycled rubber elastomers and cellulosic fibre materials. The materials are compounded in a proprietary formulation and processed to resemble taper-sawn wood shakes and slate roofing tiles accordingly.

“Enviroshake®” is available in widths of 400 mm (full), 134/266 mm (2/3 – 1/3 split) and 200/200 mm (50 – 50 split) and are 508 mm long. Each shake tapers from 6 mm at the butt to 3 mm. Similar to wood shakes, these exposed shakes will fade to silver/grey after approximately six months.

“Enviroslate®” shingles are 305 mm wide and 508 mm long. They are stamped to resemble natural slate tiles, and the exposed section will fade slightly during the first six months of exposure.

An illustration of the product

Figure 1. “Enviroshake® and Enviroslate®” shingle

  1. nail
  2. full shake
  3. split shake

Figure 2. Typical installation details

  1. apron flashing
  2. “Enviroshake® and Enviroslate®” shingle
  3. caulk
  4. felt paper underlay
  5. solid sheathing
  6. eave protection
  7. prefinished metal fascia
  8. metal drip edge
  9. starter course
  10. minimum 25-mm clearance around all openings
  11. vent stack
  12. flashing
  13. metal flashing
  14. back pan

Manufacturing plant

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

Product namesManufacturing plant
Chatham, ON, CA
Enviroshake®Product evaluated by the CCMC
Enviroslate®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 product must be installed on roofs having a minimum slope of 1 in 3. The product can be installed on roofs having a minimum slope of 1 in 4 provided the solid sheathing sections are completely covered with self-adhered modified bituminous eave protection.
  • The shingles must be installed over solid sheathing complying with the requirements of Subsection 9.23.16., Roof Sheathing, of Division B of the NBC 2015.
  • The product is limited to installations where no fire-resistance rating is required.
  • The use of the product is limited to geographical areas where the wind load, as factored for local exposure conditions and building height, does not exceed 140 km/h.
  • An underlayment consisting of a minimum of two layers of Type 15 organic felt must be installed in accordance with the manufacturer’s installation instructions.
  • The product must be used in conjunction with self-adhered modified bituminous eave protection extending a minimum of 900 mm up from the edge of the roof. The eave protection must be overlapped with Type 15 or Type 30 felt.
  • The product must be installed with regular galvanized roofing nails of at least 38 mm in length, which must be spaced 25 mm from each side of the shake and 70 mm under succeeding courses. Full shakes require at least two nails per shake and split shakes require at least four nails.
  • This Evaluation Report is applicable only to products with the phrase “CCMC 13105-R” on their packaging.
  • The product must be installed in strict conformance to the manufacturer’s installation instructions.

  Technical information

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

Evaluation requirements
Criteria number Criteria name
CCMC-TG-073153.01-15CCMC Technical Guide for Recycled Plastic Composite Shakes
Material requirements
Table 1. Results of testing the physical and mechanical properties of the product
Property Requirement Result
Density (kg/m3) Report value 1.038
Impact izod (J/m) ≥ 45.0 42.1Table footnote (1)
Dimensional stability (%) width


≤ 5.0

length 0.27
thickness 2.8
Water absorption (%) (by volume) ≤ 3.0 2.2
Strain energy original (kN/m) Report value 0.715
Modulus of ruptureTable footnote (2) (kPa) Report value 67.37 dry
27.92 soaked
Ozone resistance No cracks Pass


Performance requirements
Table 2. Results of testing the performance requirements of the roofing system
Test Requirement Result
Traffic load (N) > 900 Pass
Nail pull-through (N) > 440 874
Accelerated weathering exposure (2 000 h) – strain energy (%) 80% retention, no defects other than colour change > 100
Heat aging - strain energy (%) ≥ 80% retention of original > 100
Freeze/thaw (24 cycles) No deleterious effects Pass


Table 3. Result of testing the wind uplift bend of the products
Location Uplift height (mm) Load direction Load applied (N) Load specified Comment
Second course: centre of butt end, inner tile 3.0 Perpendicular and outward 21 Min. 20.4 N Pass
51.0 Perpendicular and outward 73 Force required to pull tile 51.0 mm Max. load
Top course: centre of butt end, inner tile 3.0 Perpendicular and outward 22 Min. 20.4 Pass
51.0 Perpendicular and outward 74 Force required to pull tile 51.0 mm Max. load
Second course of butt end, inner tile - Perpendicular and outward 30.6 No cracking, breaking or falling off the deck Pass


Table 4. Results of testing the wind resistance of the products
Interval Wind speed (km/h) Observation Result
1 80 No loss of integrity or damage noted Pass
2 100 No loss of integrity or damage noted Pass
3 120 No loss of integrity or damage noted Pass
4 140 No loss of integrity or damage noted Pass
5 170 No loss of integrity or damage noted Two shakes brokeTable footnote (1)


Table 5. Results of testing the dynamic water infiltration of the products
Wind speed (km/h) Duration of test (min) Observation
50 15 No loss of integrity or damage noted
100 15 No loss of integrity or damage noted
140 5 No loss of integrity or damage noted
170 5 No loss of integrity or damage noted


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.

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