GAF EnergyGuard Iso Polyiso Rigid Insulation Board, 2.6 in Thick, 4 ft x 4 ft Sheet

GAF EnergyGuard Iso Polyiso Rigid Insulation Board, 2.6 in Thick, 4 ft x 4 ft Sheet

Regular price $40.91

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EnergyGuard Iso Polyiso Insulation Board (4' x 4')

GAF EnergyGuard Iso is a rigid polyiso insulation board designed to add high thermal value to commercial roofing assemblies. It features glass fiber reinforced cellulosic felt facers bonded to a polyisocyanurate foam core to help improve energy efficiency and support green building goals.


Key Features:

  • High-Performance Roof Insulation: Polyiso foam core delivers high thermal value in low-slope/commercial roof assemblies
  • Durable Facers: Glass fiber reinforced cellulosic felt facers help provide stability and jobsite toughness
  • Easy to Handle: 4 ft x 4 ft sheet format is convenient for staging and placement
  • Energy-Saving Upgrade: Adds insulation value to help reduce heat flow through the roof deck
  • Commercial Roofing Compatible: Intended for use as roof insulation in commercial roofing systems

Specifications Table:

Specification Details
Brand GAF
Product line EnergyGuard Iso
Product type Rigid insulation board (polyiso roof insulation panel)
Thickness 2.6 in
Sheet size 4 ft x 4 ft
Unit of measure SH - Sheet
Category Insulation & Weatherproofing
Sub-category Flat & Fan Fold Rigid Insulation Boards

Frequently Asked Questions (FAQ):

Q: What size and thickness is this board?
A: This product is a 4 ft x 4 ft sheet with a 2.6 in thickness.


Q: What is the insulation material?
A: It is a polyisocyanurate (polyiso) foam core with glass fiber reinforced cellulosic felt facers.


Q: Where is it typically used?
A: It’s designed as a roof insulation panel for commercial roofing assemblies.


Q: Can it contribute to green building goals?
A: GAF notes the EnergyGuard Polyiso Insulation product contributes to green building rating systems (see GAF sustainability documentation).


A Clean, Architectural Layer of Comfort

Think of this as the quiet luxury of a space—an invisible layer that elevates comfort with crisp, architectural intention. The rigid, 4' x 4' format feels purposeful and precise, while the polyiso core is all about performance beneath the surface. Pair it with a well-detailed roof assembly and let the building’s envelope do the heavy lifting—more control, less compromise. It’s the kind of behind-the-scenes essential that makes elevated living feel effortless.


Add GAF EnergyGuard Iso insulation to your roofing assembly to boost thermal performance with a durable, jobsite-ready rigid board.

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Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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