Cost: FREE
Duration: 60 minutes, includes Q&A
Where: Right from your computer. Scroll down to register.

There are four basic wetting potentials that above grade exterior wall assemblies are subject to due to the differing climates between the indoor and the outdoor climates. These barriers need to be identified and located properly within the assembly in order for the assembly to effective deal with the wetting potentials. This presentation will identify these four barriers, inform participants which barriers will deal with which potentials and show the participants where to locate the barriers based on their physical properties in order to design a successful exterior wall assembly.

This 45-minute session, followed by 15 minutes of Q&A, you will:
  • Learn basic building science
  • Learn basic building physics
  • Learn the four barriers needed for the weather barrier system
  • Learn how to properly design & specify the weather barrier system
Len Anastasi
EXO-TEC Consulting, Inc.
Len Anastasi worked in the construction industry for twenty years in masonry, waterproofing and restoration work. He currently owns EXO-TEC Manufacturing, Inc. which manufactures specialty construction products, EXO-TEC Solutions, Inc. which performs marketing work for various quality and innovative manufacturers of construction products and EXO-TEC Consulting, Inc. which performs consulting services on building enclosure issues for building owners, managers, design professionals and lawyers. In his construction and consulting work, he has performed inspections and / or repairs on over 300 buildings as well as giving expert testimony in trials and reviews on dozens of legal cases. He is a member of ASTM’s E 06 Committee on Building Performance where he has authored both proposed standards as well as proposed changes to existing standards. He is a member of the Boston Society of Architects’ Building Enclosure Council where he has presented on several topics and has been sponsored to speak at the Build Boston Exposition, AIA National Convention and CSI National Convention. He has authored several articles and papers on building enclosure performance and has spoken on these topics at several conventions, seminars and meeting.

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CertainTeed ClarkDietrich
PAREX. TotalWall EPI Hunter
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