Water damage is the #1 cause of construction defects, leading to lawsuits, rot, and costly repairs. Matt takes you through real-world examples of both good and bad construction practices, analyzing sheathing, waterproofing, and window installation techniques. From outdated cardboard sheathing and poorly installed house wrap to modern ZIP System solutions, this episode exposes critical mistakes that can lead to leaks, mold, and structural failure. You’ll learn why sill pans are a must, how incorrect flashing can ruin a home, and why recessed tankless water heaters are a disaster waiting to happen. Plus, Matt shares lessons from his own early career mistakes and shows how modern best practices can create durable, high-performance homes. If you’re a builder, homeowner, or just passionate about building science, this episode will give you a clear, no-nonsense way to evaluate any construction project. Don’t get stuck with a bad house—know the signs and build better!