Atlas ACFoam-II Flat GRF Fiber Felt Faced 2 Sides 4ft x 4ft Polyiso Roof Insulation Board - All Sizes

Regular price $568.03 Sale price $533.95

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Atlas ACFoam-II is a high-performance, rigid polyisocyanurate (polyiso) foam insulation board designed for use in commercial flat roofing systems. Each board is fiber-reinforced felt-faced on both sides, offering excellent dimensional stability, strength, and durability.

Ideal for use over steel, wood, or concrete decks, ACFoam-II enhances energy efficiency, helps meet R-value targets quickly, and supports various membrane systems. Its closed-cell structure also provides superior moisture resistance compared to traditional insulation materials.

Key Features:

  • High thermal performance with industry-leading R-values
  • Fiber-reinforced felt facers on both sides
  • Excellent moisture resistance and durability
  • Compatible with multiple roof systems
  • Made in the USA, meets ASTM C1289
  • UL, FM, Miami-Dade & ICC certified


Thickness R-Value Sheets / Pallet Sq Ft / Pallet
1" R-5.7 48 768 sq ft
1.5" R-8.6 32 512 sq ft
2" R-11.4 24 384 sq ft
2.5" R-14.4 19 304 sq ft
3" R-17.4 16 256 sq ft
3.5" R-20.4 13 208 sq ft
4" R-23.6 12 192 sq ft

Application:
Designed for use in low-slope roofing systems including built-up (BUR), modified bitumen, single-ply (TPO, EPDM, PVC), and metal roof systems.

Certifications & Standards:

  • ASTM C1289 Type II, Class 1
  • FM Approved, UL Classified, Miami-Dade Approved
  • Zero ozone-depleting blowing agents
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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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