Building tight, durable homes doesn’t have to be complicated, but it does require getting the details right, especially around wall penetrations. Even small gaps around ducts, hose bibs, wiring, and line sets can weaken an otherwise good air-barrier system if they’re not sealed properly.
In this live, studio demonstration, RDH Building Science specialist James Bourget will break down a full wall mock-up to show how air-barrier gaskets work—and why they’re often a more dependable option than tapes, sealants, or self-adhered membranes. Participants will see step-by-step installations for a range of common penetrations and how gaskets tie into typical membrane sequencing.
Drawing on real job-site challenges, this session will walk through practical strategies for planning penetrations, installing components, and standardizing details so air- and water-control layers remain continuous. You’ll see installation examples both before and after sheathing membranes go on to understand how gaskets can handle everyday construction variability and those inevitable late-stage penetrations, without compromising performance.
This session is ideal for builders, architects, and trades looking for simple, buildable ways to improve airtightness, reduce rework, and extend the life of the enclosure. The goal: give you a clear, visual understanding of how gasketed penetrations can help you deliver tighter, higher-performing homes with less hassle.
By the end of this course, trainees will be able to:
Immediately following our training session, make sure to stick around for an exclusive 10-minute bonus Q&A with today’s sponsor! This is a great chance to see how you can apply what you’ve just learned using ready-to-use-off-the-shelf products, saving you the time and effort of having to build your own from scratch. Join us right after the main session to ask your questions and find the perfect “plug-and-play” solution to improve the airtightness in your next project.
PRESENTED BY: James Bourget | RDH Building Science
*Did you miss the Part 1 webinar – ‘High-Performance Enclosures: Layer by Layer’? The online recording is now available HERE!
*This webinar was developed with the support of 
All online courses require successful completion of the following components:
There is no textbook for this session. All materials are contained within the presentation during the webinar session. Any supplementary materials provided by the speaker will be emailed to students post-session, if applicable.