In this episode of the Build Show, Zack Dettmore discusses the challenge of retrofitting windows for durability in existing homes with existing security systems. Expert Kaylin Gomez showcases a solution involving window extensions with sloped heads to prevent water damage and promote drainage. The focus is on optimizing durability and water management in a practical and effective way, despite the constraints of the existing structure. The approach taken prioritizes simplicity and execution over complexity to ensure a high-performance outcome. The key takeaway is the importance of adapting and problem-solving in the field to achieve effective results in retrofitting windows for existing homes.