How to Build a Gable In 5 Easy steps

Building a gable involves five key steps: (1) Sheet the gable by aligning OSB with the truss bottom and ensuring half-on uprights for proper support; (2) Install Tyvek weather barrier by aligning the bottom, rolling out 6-7 feet, securing it, then pulling it tight and flat before working upward; (3) Tape all joints for a continuous weather seal; (4) Add foam insulation when an insulated attic space exists, aligning edges and securing with adhesive; (5) Install fascia by creating blocks, marking 2-foot on-center spacing, cutting foam around edges, and matching the truss angle (e.g., 7/12 pitch) while accounting for blade curve and roof steepness when cutting.