Building airtightness continues to grow as a design consideration or requirement in most modern building designs. However, due to the complex nature of architectural design, building components, system options, involvement of multiple trades, and the pace of modern construction, achieving airtightness in a building is often easier said than done.
Airtightness is virtually always achieved by installing some form of an Air & Vapor Barrier (AVB). An AVB is utilized to prevent moisture flow from entering the building envelope. An AVB may consist of many different products or systems, all of which have an appropriate time and place for consideration.