Roof Insulation - Fan Fold

StarRFoam Fan Fold is a lightweight, closed cell, rigid insulation manufactured from expanded polystyrene (EPS). StarRFoam Fan Fold can be used in Single Ply recover applications to save time and money. It is available with reflective metallic, clear, and white facers and is available in 200 sqft bundles. StarRFoam Fan Fold meets or exceeds ASTM C578, Standard Specification for Rigid, Cellular, Polystyrene Thermal Insulation.

Applications

  • Recover applications
  • Single-ply roof applications
  • Siding underlayment
  • Basement walls
  • Crawl spaces
  • Waterpoofing protecting board
  • Below grade insulation
  • Interior walls
  • Radiant heated floors

Benefits

  • Stable R-values
  • Proven performance
  • Environmentally friendly
  • Moisture resistant
  • Energy efficient
  • Cost-effective
  • Code approvals
  • User friendly
  • Durable
  • Energy Star approved
  • Increased R-values
  • Labor savings
  • Termite protection available
  • No CFC, HFC, HCFC, or formaldehyde

Product Data Sheets

Foam Product Type Application View / Download
Fan Fold All Roof Insulation View Download

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  • Available sizes:
  • 200 sq. ft. fanfold bundles with thickness of 3/8" to 1/2"
  • Refreltive, metallic, clear, or white facers
  • Contact your sales representative for more information
Properties Type I Type VIII Type II
Nominal Density (pcf) 0.9 1.15 1.35
Thermal Resistance (R-Value)
(per inch) at @25°F 4.35 4.55 4.35
(per inch) at @40°F 4.17 4.25 4.20
(per inch) at @40°F 3.85 3.92 4.17
Water Vapor Permeability (perms) 5.0 3.5 3.5
Water Absorption (max. % volume) 4.0 3.0 3.0
Oxygen Index, Min. 24% 24% 24%
Properties Type I Type VIII Type II
Comprehensive Strength @10% deforamtion, min. (pcf) 10-14 13-18 15-21
Flexural Strength (min. psi) 25.0 30.0 35.0
Dimensional Stability 2.00% 2.00% 2.00%
Flame Spread <20 <20 <20
Smoke Devolped 150-300 150-300 150-300
StarRGard Thickness Design Temp R-Value*
1/4"

25°

40°

75°

3.90

3.85

3.80

3/8"

20°

40°

75°

4.50

4.40

4.30

1/2"

20°

40°

75°

5.00

4.90

4.80

3/4"

20°

40°

75°

6.10

5.90

5.70