The highest performing wall assemblies are the ones designed to realistically manage moisture and dry out, and not those designed with the unachievable goal of completely locking out all water. The good news is that there are a growing number of methods for moisture management driven by advances in material technology, evolving building codes, and a growing awareness among end-users for mold prevention, IAQ, and energy efficiency. In this article, we’ll focus on weather-resistant barriers WRBs, also commonly referred to as building wrap or housewrap.