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Session 504

October 31, 3:00 p.m. - 4:00 p.m.

Massachusetts Room (Lobby Level)

Click here for session handout.

Testing Envelope Assemblies: Windows, Doors, Floors, and Walls

Fred McKnight


Turner Building Science & Design - Lyndonville, VT

Session Description 


I don’t know a facility owner anywhere that would accept a leaky wall assembly, skylight, or foundation wall. Making the building enclosure work for the owner requires that the components of the wall and roof assemblies be installed properly and that the components of each assembly are integrated to provide a water proof assembly that is also air tight and energy efficient. What tests should be completed on the separate assemblies and integrated components to verify that the assemblies will meet owner’s expectations, or at least the specifications? We’ll review what tests, measurements, and observations are good to complete during new construction project or renovation project of existing assemblies. Tests to consider include adhesion tests, cohesion test, density tests, air tightness testing, water intrusion tests, testing for conductive and convective heat energy losses.

Learning goals:

1. Obtain an understanding of what tests should be completed on wall assemblies including those for air, vapor, thermal and water restive barriers.
2. Obtain information to evaluate test conditions to provide acceptable and accurate results.
3. Review assembly parameters (sequence of installation) to obtain the surest, most restive connections and joints, and at assembly discontinuality. 
4. Gain confidence in interpreting test results.

Presentation Categories:  Building Design & Construction; Investigations, Testing & Research


Presentation Level: Basic, Intermediate

About Fred McKnight:


Mr. McKnight has over 30 years of experience in performing, HVAC Design, IAQ evaluations, building Enclosure and HVAC commissioning in both industrial and non-industrial environments. Frederick received his B.S. in Natural Science from Lyndon State College and an A.S. in Mechanical Engineering from Vermont Technical College. 

Mr. McKnight and Turner Building Science are members of ABAA (Air Barrier Association of America) and BCA (Building Commissioning Association). Frederick has been appointed as a certified Field Auditor for ABAA He was also part of the technical committee that help write the US Army Corp of Engineers (ACE) Air Leakage Test Protocol for Building Enclosures Standard v2:2011-09-01 and developed a standard for whole building air leakage testing for submission to ASTM. 

Mr. McKnight is a registered Professional Engineer with the State of Vermont. In addition, he holds a LEED AP designated by the US Green Building Council and a Certified Commission Authority (CxA) designation from ACG / AABB.