As a lightweight closed-cell foam, expanded polystyrene, or EPS, is popular in a multitude of applications, including crafts, insulation and construction projects that call for firm closed-cell foam. The unique structure of polystyrene provides almost total resistance to moisture and water vapor which makes it ideal for a range of areas and applications without worry. In addition to the water resistance, polystyrene foam has a superior R-value, so polystyrene sheets will insulate to keep heating or cooling inside of any room or commercial space and will not rot, mold or attract fungi or mildew. If you have any questions about this reliable solution, please Contact Us for assistance on the matter.
Single: One (1) sheet of 24" x 48"
Standard Size: 24" x 48"
Sizes up to 48 inches by 96 inches and thicknesses up to 32 inches are available to accomodate a range of project needs. Please Contact Us for details.
Custom Cutting is Available!
When our standard size won't work for your project, we can cut custom sizes of polystyrene for any project you may have. Please Contact Us for details.
Product may be subject to a $5.00 exemption charge per pack shipped to the West Coast. This includes, but is not limited to: AZ, CA, CO, ID, MT, NM, NV, OR, TX, UT, WA, and WY. We may contact you if this surcharge applies to your order. See our Shipping Page for more details.
Products may carry a size tolerance depending on the style and job. Please see our Tolerance Table.
Standard Sheet Sizes
Standard sheets of foam are cut slightly larger than the listed size to compensate for shrinkage during packaging, transit, and delivery. Sheets may contain rough edges.