Specification

TECHNICAL NOTE #102

HD-EPS INSULATION TECHNICAL DATA

Physical Properties of High Density EPS Insulation

Specification Reference: ASTM C578

Cellofoam

high density expanded polystyrene (HD-EPS) insulation is a rigid, foamed plastic with resilient closed cells

molded in a range of densities and sizes to meet your application and specification requirements. Our HD-EPS is produced

with modified bead containing a fire retardant and provides all of the characteristics required for long-term performance:

permanent R-Value, inherent water resistance, excellent physical strength, and dimensional stability. Contains No CFC,

HCFC or HFC.

Cellofoam

HD-EPS provides a high R-Value at a comparatively low cost, especially compared to XPS and ISO, making it

the insulation choice for roof, exterior and interior wall, below grade, cold storage and other applications. Several laminated

polymeric facer options are available for different applications. Formulations with insect/termite resistance are also available.

Our EPS does not support mold or fungal growth.

WARNING: This product is combustible and if exposed to a fire of sufficient heat and intensity may burn rapidly. It should not be left exposed or

inadequately protected. Consult specific instructions and applicable building codes for use of this product.

Conyers, GA 888-772-6383 Orlando, FL 800-423-3626 Sallisaw, OK 800-864-1518

Whiteland, IN 800-582-9007 Winchester, VA 800-864-1518

www.cellofoam.com

The performance data herein reflects Cellofoam North America Inc.’s expectation based on

tests conducted in accordance with recognized standard methods. The sale of these products

shall be subject to Terms and Conditions of Sale, including those limiting warranties as set forth

in Cellofoam North America Inc.’s invoices. No agent, employee, or representative of Cellofoam

North America Inc. or its subsidiary or affiliated companies is authorized to modify this

disclaimer.

Cellofoam

High Density EPS Properties

1,2,

Units

25 PSI

40 PSI 60 PSI

ASTM C578 TYPE IX XIV XV

Compressive Resistance @ 10% def., min. psi (kPa) 25 (173) 40 (276) 60 (414)

Density, min. lb/ft³ (kg/m³) 1.8 (29) 2.4 (38.4) 3.0 (48.0)

Thermal Resistance of 1.0 in. thickness, min. °Fft²h/Btu (°Cm²/W)

at 40ºF 4.6 (0.81) 4.6 (0.81) 4.7 (0.83)

at 75ºF 4.2 (0.74) 4.2 (0.74) 4.3 (0.76)

Flexural Strength, min. psi (kPa) 50 (345) 60 (414) 75 (517)

Water Vapor Permeance of 1.0 in. thickness, max. perm ng/Pa·s·m² 2.5 2.5 2.5

Water Absorption by total immersion, max. volume % 2.0 2.0 2.0

Oxygen Index, min. volume % 24.0 24.0 24.0

Flame Spread index < 20 < 20 < 20

Smoke Developed Index 150-300 150-300 150-300

1. When tested in accordance with ASTM C578 Test Methods

2. All HD-EPS insulation manufactured by Cellofoam North America Inc. meet ASTM C578 standard specifications

3. UL Certified - See UL ER7260-01