Spray foaming your garage is a great way to improve comfort, control temperature, and reduce energy loss. But garages are part of your building, which means a spray foam thermal barrier is typically required under BC code. Many homeowners choose plywood or OSB instead of drywall because it's durable and holds screws for shelves, tools, and storage systems. Before you insulate, make sure your plan includes the right covering so you pass inspection without surprises. Western Insulation's 2026 guide covers garage requirements plus approved materials for every room in your home. Read the full guide: https://westerninsulation.ca/spray-foam-thermal-barrier-bc/