4-foot by 8-foot expanded polystyrene sheets cut from large billets to your chosen thickness. Available in three densities to match your
application. Stock thicknesses cover insulation, structural, and craft needs.
Sheet Size: 96" L x 48" W. Stock Thicknesses: 1/2", 3/4", 1", 1-1/2", 2", 3", 4". Custom thicknesses available on request.
Density Options
Density
R-Value (per inch)
Best For
1.0 lb/ft³
R-3.85
General insulation, packaging, scenic and theatrical work, craft, props, signage.
1.5 lb/ft³
R-4.17
ICF, SIP cores, EIFS and stucco backing, premium wall and roof insulation, soundproofing.
Lightweight. A fraction of the weight of plywood, gypsum, or concrete for the same panel size.
Closed-cell structure. Won't absorb water, rot, support mold growth, or break down over time.
High R-value per dollar. One of the most cost-effective rigid insulations on the market.
Easy to cut and shape with hot wire, utility knife, saw, or router.
Coatable. Accepts polymer-modified basecoats, stucco, EIFS systems, and most adhesives.
Made in the USA. Manufactured to ASTM C578 standards.
Common Applications
Wall and roof insulation. ICF (Insulating Concrete Forms). SIP (Structural Insulated Panel) cores. EIFS and stucco backing. Pool and spa
covers. Soundproofing and sound deadening. Cold storage and walk-in coolers. Tile and shower substrate. Scenic, theatrical, and trade show
construction. Custom packaging and crating.
Need a custom thickness, length, or shape?
We CNC-cut and hot-wire shape these sheets into panels, gables, ICF blanks, decorative trim, and architectural moldings. Contact us for
custom fabrication quotes.
