O118.2-08

(reaffirmed 2013)

Eastern white cedar shingles

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Standards Update Service

O118.2-08

February 2008

Title: Eastern white cedar shingles

Pagination: 36 pages (viii preliminary and 28 text), each dated February 2008

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CSA Standard

O118.2-08

Eastern white cedar shingles

Published in February 2008 by Canadian Standards Association A not-for-profit private sector organization

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ISBN 978-1-55436-518-0

Technical Editor: Dwayne Torrey

© Canadian Standards Association — 2008

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.

Contents

Technical Committee on Wood Shingles and Shakes v Subcommittee on Eastern White Cedar Shingles vii Preface viii

1. Scope 1

   
   

2. Reference publications 1

   
   

3. Definitions 2

   
   

4. General requirements 5

   
   

5. Grade A (blue label) shingles 5

   1. Grading 5

   2. Diagonal grain 5

   3. Heartwood and sapwood 5

   4. Decay 5

   5. Edges 5

   6. Length 5

   7. Thickness 6

   8. Width 6

   9. Torn grain 6

   10. Waves 6

   11. Knots and holes 6

       
       

6. Grade B (red label) shingles 6

   1. Grading 6

   2. Diagonal grain 6

   3. Heartwood and sapwood 6

   4. Decay 6

   5. Edges 6

   6. Length 7

   7. Thickness 7

   8. Width 7

   9. Torn grain 7

   10. Waves 7

   11. Checks 7

   12. Ring shake 7

   13. Wane 7

   14. Knots and holes 7

       1. Intergrown and sound knots 7

       2. Dead, encased, loose, and unsound knots and holes 7

       3. Pitch (resin) 8

          
          

7. Grade BW (brown label) shingles 8

   
   

8. Grade C (black label) shingles 8

   1. Diagonal grain 8

   2. Heartwood and sapwood 8

      
      

      February 2008 iii

   3. Decay 8

   4. Edges 8

   5. Length 8

   6. Thickness 8

   7. Width 9

   8. Torn grain 9

   9. Waves 9

   10. Checks 9

   11. Wane 9

   12. Knots and holes 9

   13. Pitch (resin) 9

       
       

9. Grade D (green label) shingles 9

   1. Grading 9

   2. Length 10

   3. Width 10

   4. Edges 10

   5. Thickness 10

      
      

10. Rebutted-rejointed shingles 10

    1. Grading 10

    2. Edges and butt 10

    3. Length 10

    4. Width 10

    5. Thickness 10

       
       

11. Specialty products 11

    
    

12. Packaging and coverage 11

    1. Bundle thickness 11

    2. Running millimetres 11

    3. Coverage 11

       
       

13. Labelling 11

    1. Information on label 11

    2. Label colours 11

    3. Special circumstances 11

       
       

14. Quality control 12

    
    

15. Preservative treatment 12

    
    

16. Fire retardant treatment 12

Annexes

A (informative) — Conformity assessment program 15

1. (informative) — Use of shingles 18

2. (informative) — Fasteners 23

D (informative) — Pressure preservative treatment 25

E (informative) — Fire retardant treatment quality control 26

Figures

1. — Cedar shingle terminology 13

2. — Sample label 14

iv February 2008

Technical Committee on Wood Shingles and Shakes

1. Nabhan National Research Council Canada, Ottawa, Ontario

   
   

   Chair

   
   

2. Tardif Maibec Inc., Québec, Québec

Vice-Chair

1. Badke Intertek Testing Services NA Ltd., Coquitlam, British Columbia

   Associate

   
   

2. Canton Maritime Lumber Bureau, Amherst, Nova Scotia

W. Clayton Thorough-Fair Building Consultants Limited, Surrey, British Columbia

R. Engh BC Shake & Shingle Association, Mission, British Columbia

W. Gies Vancouver, British Columbia

Representing Royal Architectural Institute of Canada

S. Harris Quality Auditing Institute Ltd., Port Moody, British Columbia

Associate

D. Mooney Cedar Shake and Shingle Bureau, Mission, British Columbia

P.I. Morris FP Innovations — Forintek Division, Vancouver, British Columbia

D. Rousseau Québec Forest Industry Council, Québec, Québec

Associate

I. Soligo D’Veneto Developments Ltd., Vancouver, British Columbia

B. Thompson British Columbia Ministry of Forests and Range,

Victoria, British Columbia

A. Tiruneh Alberta Municipal Affairs, Edmonton, Alberta

H. Walthert Canadian Institute of Treated Wood, Ottawa, Ontario

J. Watson Roofing Contractors Association of British Columbia, Langley, British Columbia

D. Williams Canada Mortgage and Housing Corporation, Saskatoon, Saskatchewan

February 2008 v

H.T. Zerr Unicrete Products Ltd., Calgary, Alberta

D. Torrey Canadian Standards Association, Mississauga, Ontario

Project Manager

vi February 2008

Subcommittee on Eastern White Cedar Shingles

G. Tardif Maibec Inc., Québec, Québec

Chair

1. Badke Intertek Testing Services NA Ltd., Coquitlam, British Columbia

   
   

2. Canton Maritime Lumber Bureau, Amherst, Nova Scotia

D. Rousseau Québec Forest Industry Council, Québec, Québec

D. Torrey Canadian Standards Association, Mississauga, Ontario

Project Manager

February 2008 vii

Preface

This is the second edition of CSA O118.2, Eastern white cedar shingles. It supersedes the previous edition published in 1981 and replaces CSA O118.2-M1981, Eastern White Cedar Shingles.

This Standard specifies grading, manufacturing, packaging, labelling, and conformity assessment requirements for eastern white cedar shingles.

This Standard provides a new nomenclature for shingle grades (A, B, BW, C, and D). An effort has also been made to harmonize certain aspects of this Standard, e.g., terminology, with CSA O118.1-08, Western red cedar shakes and shingles, and CSA O118.3-93, Northern Pine Tapersawn Shakes.

Major funding for the development of this edition was provided by the Québec Forest Industry Council and its member organizations.

This Standard was prepared by the Subcommittee on Eastern White Cedar Shingles, under the jurisdiction of the Technical Committee on Wood Shingles and Shakes and the Strategic Steering Committee on Forest Products, and has been formally approved by the Technical Committee. It will be submitted to the Standards Council of Canada for approval as a National Standard of Canada.

February 2008

Notes:

1. Use of the singular does not exclude the plural (and vice versa) when the sense allows.

2. Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

3. This publication was developed by consensus, which is defined by CSA Policy governing standardization — Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this publication.

4. CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee.

5. All enquiries regarding this Standard, including requests for interpretation, should be addressed to Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.

   Requests for interpretation should

   1. define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

   2. provide an explanation of circumstances surrounding the actual field condition; and

   3. be phrased where possible to permit a specific “yes” or “no” answer.

Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are published in CSA’s periodical Info Update, which is available on the CSA Web site at www.csa.ca.

viii February 2008

O118.2-08

Eastern white cedar shingles

1. Scope

   
   

   1.1

   This Standard applies to shingles manufactured from eastern white cedar (Thuja occidentalis L.). It specifies minimum grading, manufacturing, packaging, labelling, and conformity assessment requirements.

   Note: See Annex A for a suggested conformity assessment program for use by third-party inspection and certification agencies and Annex B for recommendations on the use of shingles (including rebutted-rejointed shingles).

   
   

   1.2

   The sizes specified in this Standard are for shingles before drying unless otherwise indicated.

   
   

   1.3

   This Standard does not apply to shingles that have been remanufactured as shims.

   
   

   1.4

   This Standard is a manufacturing Standard and does not apply to installed shingles.

   
   

   1.5

   Where this Standard refers to “shingles”, the terminology is also intended to include rebutted-rejointed shingles unless the context indicates otherwise.

   
   

   1.6

   In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

   
   

   1.7

   The values given in SI (metric) units are the standard. The values given in parentheses are for information only.

   
   

2. Reference publications

This Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below, including all amendments published thereto.

CSA (Canadian Standards Association)

CSA O80 Series (in preparation)

Wood preservation

February 2008 1