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Roof Insulation - Holey Board

StarRFoam Holey Board is a lightweight, closed cell, rigid insulation manufactured from expanded polystyrene (EPS). It is available with reflective metallic, clear, and white facers. StarRFoam EPS meets or exceeds ASTM C578 Type I, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation.

Applications

  • Lightweight concrete systems
  • Can be used for slope creation

Benefits

  • Lightweight
  • Stable R-value
  • Proven performance
  • Environmentally friendly
  • Cost-effective
  • Moisture resistant
  • Mold resistant
  • User friendly
  • Durable
  • Code approvals
  • No CFC, HCFC, HFC, or formaldehyde
  • Termite protection available

Product Data Sheets

Foam Product Type Application View / Download
Holey Board All Roof Insulation View Download

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  • Available sizes:
  • 2’x4′ and 2’x8′ boards
  • 4’x4′ and 4’x8′ boards
  • 3/4″ to 20″ thickness
  • Contact your local sales representative for custom shapes and sizes.
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