This presentation initially took place at IIBEC's 2022 International Convention and Trade Show in Orlando, Florida. 

How do you make sure penetrations through your already installed air and water barrier are watertight? The method of sealing of cladding attachments through the wall assembly are critical to the building performance. To create a relevant, data-backed solution, a robust test plan was developed using a statistical test design and implemented to test all the variables of interest. Then, a statistical model was built to predict the probability of leaks with various sealing solutions. The process was used to determine which type of flashing and sealing solution is best to ensure watertightness after cladding attachments are installed over polyisocyanurate insulating sheathing. This presentation shares the basis of the test plan and research methodology as well as the findings on sealing penetrations through this system.

Andrea Wagner Watts, LEED Green Associate

DuPont Performance Building Solutions | East Aurora, NY

Andrea Wagner Watts is the commercial application leader for DuPont Performance Building Solutions. In the 15 years, she has worked in the construction industry, she has successfully helped develop multiple sealants and air/water barrier system solutions. Currently, she focuses on improving the overall performance of the building enclosure through application innovation and new product development. Watts has published on building science, interfaces, durability, and resiliency. She has two patents, is a LEED Green Associate, and is the Technical Committee co-chair for the Air Barrier Association of America. Watts holds a bachelor of science degree in civil engineering from Cornell University.