Polystyrene Foam 24"x48"
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Features

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"

4-Pack: Four (4) sheets of 24" x 48"

Standard Size: 24" x 48"
Sizes up to 48 inches by 96 inches and thicknesses up to 25 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.

Made in the USA
Made in the USA.
Details
Potential Uses for Polystyrene Foam
1LB Density: Construction, insulation, arts and crafts, and cake interiors
2LB Density: Construction, insulation, arts and crafts, and hot tub covers
3LB Density: Construction, insulation, arts and crafts, and hot tub covers
Resources Notes

Exemption Charge, Single
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.

Exemption Charge, 4-Pack
Product may be subject to a $15.00 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.

Manufacturing Tolerances
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.

Reviews
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Verified Buyer
Great Product for cabin insulation
George Long | October 10th, 2024
I was searching for 3" thick for cabin insulation prior to chinking. This is a great product, fast delivery. Thank you
Verified Buyer
Great Product!
Federico Otero | September 18th, 2024
Great Product! Very happy with the quality. I appreciate the packaging! The products always arrive i good condition.
Verified Buyer
Love it
Enid | June 19th, 2024
Made an order and called to make a change on size. Received it and was able to use for craft purposes. Love it! Will definitely order more!
Perfect for my needs
stephanie | April 15th, 2023
I needed to ship one of my hand forge swords and the most secure way is to get a giant foam block, cut it in half so now i have two 6x12x40 pieces, and then cut a channel in each half for the sword to sit. Perfectly executed with this product. Would have been a huge hassle otherwise. Foam Factory delivered a high quality product to me in time window they had quoted. nothing but professionalism. thank you foam factory!
Polystyrene Foam 24"x48"x7"
Joe dePontbriand | November 25th, 2022
This foam "block" solved a problem with our granite block front steps. The top block was covering a large open cavity between the granite and the ground level. Critters were using this space as a den/home. I had filled with crushed stone, thinking this would prevent winter movement of the granite block with water/snow melt-freezing cycles. It did not. The granite block moved away from the patio slab anyway. Stone masons suggested I fill the void with a foam material that would not cause this expansion/contraction issue. This Polystyrene Foam 24"x48"x7" fit the void after cutting it into 12"x48"x7" pieces. The "Poly Foam" easily compresses during freeze cycles, and is closed cell so it doesn't absorb moisture. We'll see how this performs over time. Tks Foam Factory for your quality products/selections. Joe d
Great product
Michael Hoffman | November 11th, 2022
Purchase was easy. Inventory of sizes was exceptional. Customer service was great, and people were friendly. My order was shipped when I ask for it and I received it fast in great condition. Will be a returning buyer. Thank you.
4” Polystyrene
George | July 27th, 2022
Excellent service, packaging, and shipping. Product will be shaped into mountains for an annual community Christmas train layout.
Fantastic Product and Wonderful Customer Service
Alex Perlman | April 12th, 2022
My aerospace team at Lehigh University used the 4" thick, 2LB density EPS foam billets to manufacture wings and tail for our RC aircraft. The foam has proven to be easy to machine, fairly durable and strong. We plan to continue using this material for future builds.