Where Can I Buy Foam Insulation Board May 2026

: Foil-faced boards (common in Polyiso) act as a radiant barrier and vapor retarder, while unfaced boards are more breathable.

: Polyiso typically offers the highest R-value per inch (approx. R-6.0), followed by XPS (R-5.0), and EPS (R-3.6 to R-4.2). Moisture Resistance where can i buy foam insulation board

: Websites like Insulation4US and Pexuniverse offer a wider range of densities and specific-use boards (e.g., under-slab or joist-specific). : Foil-faced boards (common in Polyiso) act as

: Suppliers like Woodland Building Supply or Arnold Lumber often stock specialized professional-grade materials. Popular Products by Type The "best" board depends on where you are installing it. Recommended Product Best Use Case XPS (Extruded Polystyrene) Owens Corning FOAMULAR NGX F-150 Go to product viewer dialog for this item. Basements, exterior sheathing, and moist environments. Polyiso (Polyisocyanurate) Johns Manville AP Foil Faced Polyiso Go to product viewer dialog for this item. Recommended Product Best Use Case XPS (Extruded Polystyrene)