Current with the latest International Building Code, this guide for architects and builders covers the principles and approaches to water infiltration prevention for a variety of building types, from residential to commercial buildings. Beginning with an overview of general principles and theories, the book includes specific information on applications such as below-grade conditions, sealants and membranes, then progresses to focus on specific issues surrounding the implementation of these systems. Led by noted expert Elmer Botsai, the book is written by a team of architects recognized for experience in building diagnostics.