Closed-cell spray foam is one of the best ways to insulate BC basements. It controls moisture against concrete, seals air leaks, and delivers about R-6 per inch. But if you're finishing a basement suite, rec room, or storage area, you'll almost always need a spray foam thermal barrier before the job is complete. Most homeowners use ½-inch drywall, which protects the foam and finishes the walls at the same time. Western Insulation explains basement thermal barrier rules, rim joist protection, and moisture tips for West Coast homes in our latest guide. Read more: https://westerninsulation.ca/spray-foam-thermal-barrier-bc/