EnergyGuard™ NH Barrier Polyiso Insulation board is made of coated glass-fiber bonded to a core of isocyanurate foam and achieves an ANSI UL 790 roof rating over combustible wood decks with a ½” board thickness without the use of halogenated flame retardants.

EnergyGuard™ NH Barrier Polyiso Insulation maintains the same R-value when tested according to ASTM C1289 standard using the C518 test method at both a mean temperature of 40°F (4.4°C) and 75°F (24°C) and is better for the environment as it contains no potentially hazardous flame retardent chemicals. EnergyGuard™ NH Barrier Polyiso's CGF facer is moisture resistant, resistant to mold growth and is more durable than the GRF facer.

• Coated glass facers bonded to a core of non-halogenated isocyanurate foam
• One of the highest insulation values compared to other FM Class 1 rated product of equivalent thickness
• Manufactured with EPA-compliant blowing agents
• Contain no CFCs or HCFCs; has zero ODP
• Is a Red List Free product with a Declare label designation
• Meets the requirements of ASTM D3273 for resistance to growth of mold.
• Improved fire resistance
• Lightweight for easy handling and cutting in the field
• Available in 1/2" - 4.6" thickness