The Build Show on Instagram: "Jake Bruton kicks off a multi-part insulation series by covering the fundamentals every builder should know. He explains how heat really moves through a home, what R-value, U-factor, and delta T actually mean, and how the 2021 energy code shifts the focus to whole-assembly performance. Tying building science to comfort, durability, moisture control, and efficiency, this episode lays a clear foundation for smarter insulation decisions—and sets the stage for deeper di