Guidelines for Complying With Building Code Requirements for Roof Assemblies: International Building Code, 2009 Edition

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3 Guidelines for Complying With Building Code Requirements for Roof Assemblies: International Building Code, 2009 Edition

4 National Roofing Contractors Association W. Higgins Road, Suite 600 Rosemont, IL (847) Fax: (847) Website: Published by the National Roofing Contractors Association W. Higgins Road, Suite 600, Rosemont, IL by the National Roofing Contractors Association All rights reserved Published 2012 Printed in the United States of America Portions of this publication include excerpts from the International Building Code, 2009 Edition, International Fire Code, 2009 Edition, International Plumbing Code, 2009 Edition and International Existing Building Code, 2009 Edition published by International Code Council Inc., Washington, D.C. Reproduced with permission. All rights reserved. 2 Guidelines for Complying With Building Code Requirements for Roof Assemblies: 2009 International Building Code

5 FOREWORD Codes provide the minimum legal requirements for the construction, maintenance, and operation of buildings and structures. A model building code is developed and maintained by an independent standards organization. This arrangement creates a forum to debate proposed revisions and encourages consistency in the application of code provisions. Jurisdictions often choose to adopt a model building code (with or without local amendments). This saves the effort of jurisdictions developing their own codes and allows them to benefit from the shared experience of others using the same model code. The 2009 International Codes (I-codes ) published by the International Code Council (ICC ) includes the International Building Code (IBC), International Existing Building Code (IEBC), International Energy Conservation Code (IECC), International Fire Code (IFC), International Fuel Gas Code (IFGC), International Mechanical Code, ICC Performance Code, International Plumbing Code, International Private Sewage Disposal Code, International Property Maintenance Code, International Residential Code, International Wildland-Urban Interface Code and International Zoning Code. This publication identifies the roofing-related provisions of IBC 2009 as well as referenced portions of IFC 2009, IPC 2009 and IEBC 2009 and serves as a guide to identify the minimum requirements for various roof assemblies. This publication is best used with The NRCA Roofing Manual. To construct quality, long-lasting roof assemblies, due care is needed in their design, manufacture, installation, and repair and maintenance to ensure components work together as intended. Guidelines for Complying With Building Code Requirements for Roof Assemblies: 2009 International Building Code 3

6 ABOUT THE INTERNATIONAL CODE COUNCIL The International Code Council is a member-focused association dedicated to helping the building safety community and construction industry provide safe, sustainable and affordable construction through the development of codes and standards used in the design, build and compliance process. Most U.S. communities and many global markets choose the international codes. ICC Evaluation Service (ICC-ES), a subsidiary of the International Code Council, has been the industry leader in performing technical evaluations for code compliance fostering safe and sustainable design and construction. Headquarters: 500 New Jersey Ave. NW, Sixth Floor, Washington, DC District Offices: Birmingham, Ala.; Chicago; Los Angeles (888) Guidelines for Complying With Building Code Requirements for Roof Assemblies: 2009 International Building Code

7 TABLE OF CONTENTS Introduction... 7 How to Use This Guide... 8 Chapter 1 Introduction to the International Building Code, 2009 Edition... 9 Chapter 2 Code Requirements Applicable to all Roof Assemblies Fire Resistance Impact Resistance Uplift Resistance Weather Protection and Roof Drainage Attic Ventilation Reroofing Chapter 3 Roof System-specific Code Requirements Asphalt Shingles Clay and Concrete Tile Metal Roof Panels Metal Roof Shingles Mineral-surfaced Roll Roofing Slate Shingles Wood Shingles Wood Shakes Built-up Roofing Polymer-modified Bitumen Roofing Thermoset Single-ply Roofing Guidelines for Complying With Building Code Requirements for Roof Assemblies: 2009 International Building Code 5

8 3.12 Thermoplastic Single-ply Roofing Spray Polyurethane Foam Roofing Liquid-applied Coatings Vegetative Roofs Appendixes: Appendix A International Fire Code, 2009 Edition (IFC 2009): Roofing-related Requirements...63 Appendix B International Plumbing Code, 2009 Edition (IPC 2009): Roofing-related Requirements...70 Appendix C International Existing Building Code, 2009 Edition (IEBC 2009) Roofing-related Requirements...79 Appendix D International Energy Conservation Code, 2009 Edition (IECC 2009)...87 Appendix E International Residential Code, 2009 Edition (IRC 2009)...88 Appendix F National Fire Protection Association (NFPA) 1, Fire Code, 2009 Edition Summary of Roofing-related Topics...89 Appendix G National Fire Protection Association (NFPA) 241, Standard for Safeguarding Construction, Alteration, and Demolition Operations, 2009 Edition Summary of Roofing-related Topics Appendix H Provisions for Alternative Designs, Materials and Methods of Construction Guidelines for Complying With Building Code Requirements for Roof Assemblies: 2009 International Building Code