EPS Blocks - EPS Blocks

Expanded Polystyrene (EPS) is a lightweight, closed cell, rigid, plastic foam insulation material produced from solid beads of polystyrene. The EPS beads are expanded and then molded into large EPS Blocks then used in walls, roofs, floors, attics, crawl spaces, EIFS, stucco, and architectural shapes. EPS offers design flexibility, high R-Values for thermal insulation, superior dimensional stability, and resistance to moisture absorption and physical degradation. EPS is the ideal, cost-effective and easy-to-use material in all types of buildings, from houses and offices to factories and schools. StarRfoam meets or exceeds the requirements of ASTM C578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation.
 EPS Blocks

Product Data Sheets

Foam Product Type Application View / Download
StarRFoam - EPS ALL View Download
StarRFoam EPS I (10 psi) View Download
StarRFoam EPS VIII (15 psi) View Download
StarRFoam EPS II (20 psi) View Download
StarRFoam EPS IX (25 psi) View Download
StarRFoam EPS XIV (40 psi) View Download
StarRFoam EPS XV (60 psi) View Download

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Properties Type XI Type I Type VIII Type II Type IX Type XIV Type XV Test Method
Nominal Density (pcf) 0.7 1.0 1.25 1.5 2.0 2.5 3.0 ASTM C303
Thermal Resistance (R-Value) ASTM C518 or C177
(per inch) at @25°F 3.60 4.35 4.55 4.76 5.00 5.05 5.10
(per inch) at @40°F 3.40 4.17 4.25 4.55 4.76 4.85 5.05
(per inch) at @40°F 3.20 3.85 3.92 4.17 4.35 4.50 4.60
Water Vapor Permeability (perms) 5.0 5.0 3.5 3.5 2.5 2.5 2.5 ASTM E96
Water Absorption (max. % volume) 4.0 4.0 3.0 3.0 2.0 2.0 2.0 ASTM C272
Oxygen Index, Min. 24% 24% 24% 24% 24% 24% 24% ASTM D 2863
Properties Type XI Type I Type VIII Type II Type IX Type XIV Type XV Test Method
Comprehensive Strength @10% deforamtion, min. (pcf) 5.0 10-14 13-18 15-21 25-33 40.0 60.0 ASTM D1621
Flexural Strength (min. psi) 10.0 25.0 30.0 35.0 50.0 60.0 75.0 ASTM C203
Dimensional Stability 2.00% 2.00% 2.00% 2.00% 2.00% 2.00% 2.00% ASTM D2126
Flame Spread <20 <20 <20 <20 <20 <20 <20 ASTM E84
Smoke Devolped 150-300 150-300 150-300 150-300 150-300 150-300 150-300 ASTM E84