Roof Insulation - Tapered

StarRFoam Tapered is lightweight, closed cell, rigid insulation manufactured from expanded polystyrene (EPS). StarRFoam EPS meets or exceeds ASTM C578, Standard Specification for Rigid, Cellular, Polystyrene Thermal Insulation.
 Tapered Insulation

Applications

  • Lightweight concrete systems
  • Can be used for slope creation

Benefits

  • Stable R-Value
  • Proven Performance
  • Environmentally friendly
  • Moisture resistant
  • Cost-effective
  • Lightweight
  • Eliminates poding water
  • Mold resistant
  • Termite protection available
  • User friendly
  • Durability
  • Code approvals
  • Can eliminate fillers up to 40″
  • No CFC, HCFC, HFC, or formaldehyde

Product Data Sheets

Foam Product Type Application View / Download
Tapered All Roof Insulation View Download

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  • Available sizes:
  • 4’x4′ panels
  • 4’x8′ panels
  • No limitation on slope
  • Contact your sales representative for more information
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