Water Vapor Permeance – Why Does it Matter?

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Wednesday, April 13, 2016; 11:00 AM - 12:00 PM Eastern
Cost: FREE

This is the second part of a two-part webinar series on water vapor permeance. The first webinar defined permeance. This webinar discusses why it matters. The permeance of the paint system applied to a building can affect the performance of the entire wall assembly. The same system that successfully protects a building in Rhode Island could lead to the formation of condensation within the walls in Miami, Florida. This webinar presents the results of thermo-dynamic modeling that was undertaken using WUFI-ORNL/IBP software. A comparison of different scenarios will be presented illustrating the results that the permeance of interior/exterior coating systems can have on the performance of the wall assembly in buildings located in different climate zones.

Learning objectives:
1) Recognize the differences in “vapor drive” and “water-vapor permeance of coatings” in building wall assemblies.
2) Identify differences in the performance of a building wall assembly when an impermeable, semi-permeable, and permeable system is used on the exterior and interior surface.
3) Identify differences in the performance of identical building wall assemblies located in different climate zones.
4) Recognize the value in using WUFI in making judgements on coating selection.
Downloadable File:
(right-click and choose 'Save Target As' to download; all downloads are copyright of their author.)

Harold F. DeCelle, Project Engineer - Commercial Services Group
KTA-Tator, Inc.

Harold De Celle is a Project Engineer for KTA's Commercial Services Group with over 35 years of experience in Construction and Building Design. He rs proficient in AutoCAD. Harold performs building envelope evaluations on commercial structures for various KTA clients nationwide. He routinely performs forensic-type evaluations on existing buildings which consist of destructive and non-destructive testing. He is proficient in the use of diagnostic equipment and instrumentation such as various types of moisture meters, infrared thermography, water spray rack equipment to assess wind driven rain and fiber optics. Prior to joining KTA Harold was the Vice-President/Owner of De Celle Post & Beam, lnc. and designed and built post and beam buildings. He holds a B.S. in Civil Engineering-Structures from University of North Carolina-Charlotte and holds memberships with ASCE, and the National Honor Society and was awarded the UNC-Charlotte - The William States Lee College of Engineering Civil & Environmental Engineering Ann M. Johnson Hats Off! Academic Achievement Award in 2013. He holds certification for WUFI-ORNL WUFI-PRO, Weather Analyzer and MPI Architectural Coating Technologist (ACT) with honors.

Kevin Brown, Technical Director, Commercial Services Group
KTA-Tator, Inc.

Kevin J. Brown is Technical Director for the Commercial Services Group for KTA-Tator Inc., where he develops and implements maintenance programs for commercial clients with architectural/commercial problems related to paint failures. He holds a CXLT (Certified XL Tribometrist), NACE Level 2 coating inspector certification and RRO (Registered Roof Observer) certification. Mr. Brown has a BS degree and MBA from Gardner-Webb University in Boiling Springs, N.C. He also has attended several seminars at World of Concrete, SSPC, and PACE on floor restoration and coating systems. Kevin has more than 15 years of experience in the field of retail facility management, overseeing building maintenance and preventative maintenance programs for more than 1,700 stores including store repaints, floor coating replacement and long-range budget planning.

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Tagged categories: D+D; KTA-Tator; North America

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