In this episode of The Build Show, Stephanie takes us to Heber, Utah for an in-depth, above-the-slab look at one of the most detailed underslab preparations she’s ever walked through. Before the concrete is poured, she breaks down every layer of the system—from HVAC ducts and plumbing layout to the active radon mitigation loop, vapor barrier installation, Owens Corning XPS insulation, and the radiant heat tubing grid.

Stephanie explains why each component matters, how it ties back to building code, and what builders should know to avoid common mistakes. Whether you're new to construction or looking to elevate your underslab practices, this episode offers a clear, high-level understanding of the unseen work that ensures long-term performance, safety, and homeowner comfort.

Watch more of Stephanie's video and follow her on Instagram.
Stephanie Dailey's Episodes
Stephanie Dailey's Instagram