Atlas ACFoam-II Grade-II Polyiso Roof Insulation, 2 in. x 4 ft. x 8 ft, 20 psiACFoam II Grade II Polyiso Roof Insulation Board, 2" x 4' x 8' Closed cell polyisocyanurate roof insulation with a foam core integrally bonded to nonasphaltic, fiberreinforced organic felt facers. This 2 inch board delivers dependable long term thermal resistance (LTTR) and Grade II 20 psi compressive strength for durable commercial and residential roofing assemblies. Key Features: Durable Construction: Closed cell polyiso core with fiber reinforced

ACFoam-II Grade-II Polyiso Roof Insulation Board, 2" x 4' x 8'

Closed-cell polyisocyanurate roof insulation with a foam core integrally bonded to non‑asphaltic, fiber‑reinforced organic felt facers. This 2-inch board delivers dependable long-term thermal resistance (LTTR) and Grade-II 20 psi compressive strength for durable commercial and residential roofing assemblies.

---

Key Features:

• Durable Construction: Closed-cell polyiso core with fiber-reinforced organic felt facers for strength and stability
• Thermal Performance: Provides long-term thermal resistance (LTTR) for energy-efficient roof systems
• Grade-II Strength: 20 psi compressive strength supports rooftop loads under typical service conditions
• Standard Size Panel: 2 in. thickness, 4 ft. x 8 ft. board simplifies layout and reduces seams
• Code & Program Recognitions: Meets ASTM C1289 and carries multiple UL, FM, Miami-Dade, and Florida approvals

---

Specifications Table:

Specification	Details
Product Name	ACFoam-II Grade-II Polyiso Roof Insulation
Brand	Atlas
Board Dimensions	2 in. x 4 ft. x 8 ft
Thickness	2 in. (50.8 mm)
Width	4 ft (1220 mm)
Length	8 ft (2440 mm)
Compressive Strength	Grade-II (20 psi)
Core	Closed-cell polyisocyanurate (polyiso) foam
Facers	Non-asphaltic, fiber-reinforced organic felt
Style	Polyiso
Area per Unit	768 sq. ft. per unit
Applicable Standards/Approvals	ASTM C1289; CAN/ULC-S704; CCMC No. 12464-L; UL Certified for Canada; UL 1256; UL 790 (ASTM E108); UL 263 (ASTM E119); UL 1897; FM 4450/4470 Approved; IBC Chapter 26 & NBC; Miami-Dade County Approved; Florida Product Approved; UL Greenguard Gold Certified; RCI Approved; AIA Approved; U.S. Green Building Council Member; National Roofing Contractors Association
SKU / Material Number	610719
Supplier Product Number	ATL2ISO48ACII

---

Frequently Asked Questions (FAQ):

Q: What is the panel size and thickness?
A: Each board measures 4 ft. x 8 ft. with a 2 in. thickness.

---

Q: What is the compressive strength rating?
A: Grade-II, rated at 20 psi.

---

Q: What facers does this product use?
A: Non-asphaltic, fiber-reinforced organic felt facers bonded to a polyiso foam core.

---

Q: Is this insulation approved for major codes and listings?
A: Yes. It meets ASTM C1289 and is approved/listed under UL, FM 4450/4470, Miami-Dade, Florida Product Approval, and more as specified.

---

Q: How much area does a unit cover?
A: 768 square feet per unit, per the supplier listing.

---

Sleek Thermal Armor for Modern Roofscapes

This polyiso board refines the roof plane with a crisp, architectural profile while quietly elevating energy performance. The fiber-reinforced felt facer lends a tailored, matte surface that layers beautifully beneath membranes. Pair it in staggered courses to create a seamless, high-lux envelope that tempers interior climates year-round. It’s the discreet foundation of a polished, performance-driven building shell.

---

Upgrade your roof system with Atlas ACFoam-II Grade-II to boost thermal performance and code confidence in one easy step.

Warranty