Advanced Thermal Concepts on Instagram: "Building Envelope Mistakes | Rainwater, Drainage & Flashing Explained! A home’s insulation isn’t the only thing that matters the exterior building envelope is just as critical. Rainwater and moisture mismanagement are some of the most common causes of rot, mold, and structural damage. In this video, we cover: Why rain screening & drainage planes are vital 🏠 Proper techniques with house wrap & ZIP System ⚙️ How to correctly seal around windows and doors �