: Foil-faced boards (common in Polyiso) act as a radiant barrier and vapor retarder, while unfaced boards are more breathable.
You can buy foam insulation board at major home improvement retailers, specialized building supply stores, and online industrial marketplaces. Where to Buy where can i buy foam insulation board
: Home Depot and Menards are primary sources for common brands like Owens Corning and SilveRboard . : Foil-faced boards (common in Polyiso) act as
: XPS is highly moisture-resistant, making it the standard for below-grade or foundation use. specialized building supply stores