: Stocks EPS sheets in multiple densities with custom order options for sizes up to 48"x96" and thicknesses up to 25 inches.

Specialty distributors are the best choice for custom dimensions, specific densities (1lb to 3lb), or professional fabrication services like hot-wire or waterjet cutting.

: Best for project-ready packs of craft foam blocks, 24"x48" sheets, and floral foam.

: A specialty shop for hobbyists needing specific XPS foam for terrain building and architectural models. Specialty Foam Suppliers

Polystyrene foam can be purchased through diverse channels depending on whether you need it for small-scale DIY crafts, large-scale construction insulation, or custom industrial fabrication.

For small quantities, quick shipping, or standard sizes, major online marketplaces offer a wide variety of Expanded Polystyrene (EPS) and Extruded Polystyrene (XPS) products.

: Operates a national network with over 100 shipping locations. They provide everything from small craft foam to heavy-duty construction insulation.