Over the past 10 years there have been significant changes to codes and regulations for the design and construction of thermally efficient, air-tight buildings.

We will examine:

• Comparisons between self-adhered and mechanically attached water-resistive vapor -permeable air barrier membrane systems.

• Connection details and construction methods to achieve a continuous plane of barrier to control air leakage in accordance with the 2012 IECC International Energy Conservation Code / ASHRAE 90.1-2010.

This presentation will review the technical issues of:

• Technical issues related to uncontrolled air movement vapor diffusion

• Principles of wall design

• Functional “build to the design”

 • How air barriers, in-conjunction with vapor permeable membranes, save money

About the Presenters:

Alan A. Wiechert, RRO, Principal, Building Envelope Solutions

Alan is the principal and founder of Building Envelope Solutions LLC.  Alan has been a part of the Building Enclosure Council – National Institute of Building Sciences (www.nibs.org/page/bec) since its conception. He is active with the Roofing Consultants Institute and is a Registered Roof Observer.  He holds a position on the Engineering Society of Detroit's Construction Committee and consults on building envelope applications.  Alan has been associated with a variety of applications including panelization, Living Building, Net Zero Energy, CLT, and Passive House solutions.  He was recognized for outstanding presentation; "Is Black the new Green” at the DTE Energy Symposium.  As a consultant offering analysis and building envelope expertise, he helped save the La-Z-Boy Company an estimated 5 million dollars in energy over a 20-year period. He earned his bachelor’s degree at Central Michigan University..