January 27, 2007

Water management is based on the basic principles of physics. The concepts of drainage, wetting and drying potential are generally easy to understand. Explaining with graphics, text, or words what needs to be done for proper water management can be pretty straight forward, since we are dealing with ideal concepts and situations. The in field installation of these details, however, often requires some care to ensure that they perform properly. Repetitive installations and a need to get installations done quickly can lead to poor installations that can cause problems. Special guidance is sometimes needed as to how products should be installed and where special care should be taken to ensure problem free performance of the building enclosure system. This guide explains the concepts of drainage, wetting and drying potential using graphics in relationship to window installations and building envelope penetrations. Also, a special review of in-field installation practices is included.