Happy New Year!

The January 2023 SeaBEC Lunch Meeting Will Be Presented Online and In-Person at OAC!

RSVP to attend this meeting by clicking HERE

Renew or apply for your SeaBEC Membership for 2023

Visit www.seabec.org to join or renew your membership today

All SeaBEC Members and guests are welcome. This event is free for SeaBEC members and $10 for guests.  

2200 1st Ave. S, Ste 200
Seattle, WA 98134

Thursday, Jan. 19, 2023

Add to Calendar 

11:30 am - 11:40 am SeaBEC Business + Announcments
11:40 am - 1:00 pm Speaker Presentation and Q&A 

Meeting Sponsored by:

Follow SeaBEC on 

Are Highly Permeable Membranes Too Permeable?

Low permeance vapor barriers, once thought to improve performance, may in fact increase interior condensation and trap moisture within the wall assembly. Due to the problems with impermeable water-resistive barrier (WRB) installation, many architects are now incorporating highly vapor-open WRB systems in their designs. But many still believe too much permeability is bad for a wall assembly. Studies show that highly permeable WRB systems increase substrate drying, and reduce the wet time of absorptive claddings allowing permeable WRB membranes to enhance the wall assembly performance. This presentation investigates the current research on vapor open systems and discusses how more permeability enhances wall assembly performance. During this presentation we will examine:
     • Water vapor transmittance
     • Water hold out vs. airtight
     • Drying capacity
     • Vapor barriers vs. vapor open

 Scott D. Wood is the Senior Building Scientist at VaproShield, providing product support on manufactured materials and investigation/testing of properties for new product development. As a building scientist, he provides technical support for the company's representatives, clients, and assists in the development and updating product literature. Scott is President of SWA Consulting. as an ITC certified Level III Thermographer with decades of experience performing condition monitoring and building applications using thermography. He has many publications in areas of both thermography and building science. Mr. Wood provides investigations, consulting, presentations and training in Building & Thermography Sciences. Since his creation of the course in 2003, he provides the only 4-day Building Science Thermography class for Level I and Level II that provides instruction in the use of infrared thermography in building applications.

This presentation is pending approval for 1 hour of AIA continuing education credits.




 Mark your Calendar

SeaBEC Meeting, Thursday, February 16, 2023