Roof Insulation - EnergyGuard PolyIso Insulation

EnergyGuard NH HD
PolyIso Roof Insulation

New Non-Halogenated Polyiso Insulation Boards That Are Better For The Environment

If you have a roof that gets a lot of traffic, we recommend using a cover board that’s up to the task. GAF offers two high-density, non-halogenated versions of our ISO, EnergyGuard™ NH HD Polyiso Cover Board and EnergyGuard NH HD Plus Polyiso Cover Board. They’re lighter than conventional gypsum-based cover boards, easier to cut, and better for the environment. And with an R-value of 2.5 -- the highest of any cover board – your best choice is clear.

Sustainable design projects pursuing certifications under a green building rating system such as LEED v4 or Living Building Challenge will benefit from these certifications and listings.

Features and Benefits

  • Durable coated glass facer bonded to a core of non-halogenated isocyanurate foam.

  • A fraction of the weight of gypsum cover boards.

  • Over 80 psi compressive strength for NH HD and 110 psi for NH HD Plus.

  • Manufactured with EPA-complaint blowing agents.

  • Contain no CFCs or HCHSs; has zero ODP.

  • Excellent dimensional stability.

  • Lower overall perm rating than many conventional insulation boards.

  • High moisture resistance and no capillarity.

  • Is a Red List Free product with a Declare label designation.

  • Holds a Health Product Declaration (HPD).

  • Meets ASTM C1289 Type 2, Class 4, Grade 1 (80 psi) and Grade 2 (110 psi).

  • Meets FM 4450/4470 and UL 790.

  • Meets FM Approval criteria for severe hail damage resistance (Class 1-SH) when FM Approved as a component of a Class 1-SH rated roofing assembly. Refer to RoofNav® for specific assembly approvals.

  • FM Approvals Specification Tested per FM 4473 for Class 3 impact resistance as a component of a Class 3 rated roofing assembly. Refer to the FM Approval Guide for Specification Tested roofing assemblies.


All documents are U.S. English unless otherwise noted

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