Canadian Wood-Frame House Construction by Canada Mortgage and Housing Corporation (CMHC) has been a popular publication for builders, homeowners (current and prospective) and students of housing technology since its first edition appeared in 1967. It continues to be a widely used reference for numerous college and university courses and is one of many continuing efforts by CMHC to provide accessible, affordable and sustainable housing for Canadians. HOW TO USE THIS BOOK Canadian Wood-Frame House Construction is a concise description of Canadian wood-frame house construction and references several other publications that provide additional information. This book is not intended to be a complete reference on wood-frame house construction, but it is an introductory book for understanding and applying wood-frame house construction principles. Though Canadian Wood-Frame House Construction is based on the requirements of the 2010 edition of the National Building Code (NBC), it is not a substitute for the NBC. Readers are encouraged to refer to the housing-related codes and standards in their jurisdictions for a complete set of requirements. The book also provides some recommendations that go beyond the requirements of the NBC. The organization of Canadian Wood-Frame House Construction generally corresponds to the construction sequence for a typical house. In this updated version, information about the functions of the building envelope has been moved close to the front (see Chapter 5) Canada Mortgage and Housing Corporation xiii