In this episode of the Build Show, Travis breaks down the challenges of maintaining air-sealing continuity when installing European-style inset windows. He explains why interior air sealing is typically preferred, how clips and shims complicate sealant application, and why his team backs up their interior approach with exterior tapes like SIGA Fentrim. Travis also compares options—backer rod with Big Stretch, flexible foam, and spray foam—showing why proper joint geometry and bonding matter for long-term performance. It’s a practical look at achieving a durable, continuous air control layer around modern window installs.

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