• Low cost per R-value
  • Superior dimensional stability
  • Resistant to moisture
View Technical Data

Geofoam Projects

Proven Performance You Can Count On

STYRO-FLEX expanded polystyrene (EPS) roof insulation is compatible with all major roofing materials and systems, making it ideal for use in ballasted, mechanically fastened and fully-adhered roof assemblies, and under both membrane and built-up coverings. STYRO-FLEX EPS provides permanent high R-Values, superior dimensional stability and documented resistance to moisture absorption and physical degradation.

Available in flat, tapered and compound tapered panels, STYRO-FLEX EPS roof insulation offers unparalleled cost-effectiveness and design flexibility. With a long history of proven performance, STYRO-FLEX EPS provides building owners, architectural specifiers and contractors the confidence that comes from its successful application in millions of square feet of high-performance roof systems.

Discover The Benefits Of STYRO-FLEX Roof Insulation

  • The lowest cost per R-Value of any rigid insulation board provides high insulating values that will not diminish over time.
  • Superior dimensional stability helps assure that your roof insulation system remains tight and energy-efficient, and your membrane fully supported.
  • Resistant to the effects of moisture, yet it breathes, is not a vapor barrier and needs no venting.
  • Compressive strengths ranging from 10 – 25 psi that can accommodate specific roof traffic and loads without deforming.
  • Sizes that offer more slope and dimension options than other insulations.
  • Independent test reports document superior in-situ performance in a wide variety of roof applications.

Product Specifications

7220 - Roof Deck Insulation: STYRO-FLEX EPS roof insulation is available in tapered and flat panels and in a variety of slopes. Ideal for use in ballasted, mechanically fastened and fully-adhered roof assemblies, and under both membrane and built-up coverings.


Ballasted
Roof Assembly

Mechanically Fastened
Roof Assembly

Fully-Adhered
Roof Assembly
Factory fabricated hip and valley panels eliminate time consuming field fabrication of mitered corners.

Product Dimensions

STYRO-FLEX EPS roof insulation is available in a range of sizes to meet your specific application:
Thickness: 1/4 inch – 36 inches
Width: 24 inches – 48 inches
Length: 48 inches – 96 inches

Environmental Assurance

STYRO-FLEX EPS does not contain ozone-depleting CFCs or HCFCs.

Technical Data

Styro-Flex Design Considerations Styro-Flex Design Considerations
(90 KB)

Styro-Flex Physical Properties ASTM C578 Styro-Flex Physical Properties ASTM C578
(85 KB)

Styro-Flex Safety Data Sheet Styro-Flex Safety Data Sheet
(603 KB)

UL Evaluation Report ER 13418 UL Evaluation Report ER 13418
(61 KB)

UL Flame Spread and Smoke Developed Data UL Flame Spread and Smoke Developed Data
(92 KB)

UL Roof Deck Construction No. 458 UL Roof Deck Construction No. 458
(143 KB)