Choose Your Ideal Insulation Type

Insulspan offers both White EPS and Grey GPS insulation solutions for our SIP products. Both options are rigid, closed-cell, plastic foam comprised of hollow, spherical beads fused together using steam. While our standard EPS panels provide excellent efficiency, our R-Plus panels can increase overall R-values up to 20%.

Standard White EPS InsulationEPS Heat Transfer Graph

Insulspan’s standard SIPs are comprised of EPS insulation cores with oriented strand board (OSB) skins.

Combating Energy Transfer

You may recall from high school science class that there are three ways that energy can be transferred: conduction (via solids), convection (via air or water), and radiation (via electromagnetic waves). Insulspan EPS SIPs are very good at addressing energy transfer via conduction and convection.

Our Standard EPS May Be Right for Your Project:

  • If your application requires R-values available with standard EPS, then this is a more economical choice
  • If you require a thicker panel to reach your structural needs, Insulspan SIPs are available in 5 thicknesses to meet your R-value needs



Insulspan Neopor GPS Insulation

Insulspan’s graphite-enhanced expanded polystyrene (GPS) insulation is easily recognizable by its grey color tone. GPS features a core of expanded polystyrene (EPS) insulation manufactured using BASF’s Neopor® F5300.

GPS Heat Transfer GraphCombating Radiant Heat Transfer

In addition to providing resistance to energy transfer from convection and conduction, the addition of Neopor® to our EPS insulation adds a direct resistance to radiant heat transfer.

GPS SIPs May Be Right for Your Project:

  • If your project requires you to meet R-values that are not possible with EPS alone
  • If you prefer thinner panels, you can use R-Plus panels to reach higher R-values at a thinner thickness
  • If your project is in a very hot and sunny location, then reducing heat transfer with GPS may be beneficial

To learn more about the R-value/RSI of Insulspan SIPs, please visit our R-value page.
Check out the product information in the Resources section.

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800-726-3510 East, Midwest | 866-848-8855 West

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