Preparing for siding installation involves focusing on exterior door and window trims. Various materials like Hardy, vinyl, and PVC Borden Batten are explored. A unique window trim assembly is designed for effective water management, featuring drainage techniques. Versatex PVC is selected for durability, with specific fastening methods. Strategies like weep holes and head flashing are implemented to prevent moisture issues, while a non-traditional trim design enhances aesthetics and reduces maintenance.