Bryan walks through the process of sealing air gaps behind a bathtub, an often-overlooked step in energy-efficient construction. Aiming for a Zero Energy Ready Home certification, he emphasizes maintaining continuous control layers, even behind enclosures like tubs or fireplaces. He showcases materials from SIGA—like Tweenet tape, Myrex membrane, and Rissan tape—used in conjunction to maintain airtight seals. Brian highlights the importance of strategic material use for both performance and budget, sharing practical advice for combining insulation and air-sealing products. His passion and builder humor shine through as he wraps with encouragement: "Now go build something!"