Door Cores

Door cores are manufactured from high-quality expanded polystyrene (EPS)

StarRFoam Door cores are lightweight, closed cell, rigid insulation manufactured from expanded polystyrene (EPS). Available with advanced laminate facers. The facers shed water to reduce moisture build-up in the cavity wall.
  • Commercial and residential doors
  • User Friendly
  • Environmentally friendly
  • Termite protection available
  • Cost-effective
  • Stable R-Values
  • Moisture resistant
  • Proven performance
  • Mold resistant
  • No CFC, HFC, HCFC, or formaldehyde
  • Available sizes:
  • 4'x8' sheets
  • 3/8" to 5" thicknesses in 1/8" increments
  • Contact your local sales representative for custom shapes and sizes.
Kingman, AZ

4555 Olympic Way
Kingman, AZ 86401


928-681-2800

Anthony, TX

1004 Omar Road
Anthony, TX 79821


915-886-4636

Arlington, TX

3220 E. Avenue F
Arlington, TX 76011


800-722-6218

Properties Type XI Type I Type VIII Type II Type IX Type XIV Type XV Test Method
Nominal Density (psi) 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
Compressive Strength @10% deformation, min. (psi) 5.0 10-18 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
  • Door Cores