Atlas ACFoam-III Grade-III Polyiso CGF Roof Insulation, 1-1/2 in x 4 ft x 8 ft (25 psi)ACFoam III 1 1 2" Polyiso Roof Insulation Board Closed cell polyisocyanurate roof insulation with fiber reinforced organic felt facers for durable thermal performance. The Grade III board delivers 25 psi compressive strength and long term thermal resistance in a 1 1 2 in thick, 4x8 format. Key Features: Durable Polyiso Core: Closed cell foam for strong thermal resistance (LTTR) Reinforced Facers: Non asphaltic, fiber reinforced organic felt facers

ACFoam-III 1-1/2" Polyiso Roof Insulation Board

Closed-cell polyisocyanurate roof insulation with fiber-reinforced organic felt facers for durable thermal performance. The Grade-III board delivers 25 psi compressive strength and long-term thermal resistance in a 1-1/2 in thick, 4x8 format.

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Key Features:

• Durable Polyiso Core: Closed-cell foam for strong thermal resistance (LTTR)
• Reinforced Facers: Non-asphaltic, fiber-reinforced organic felt facers improve stability
• Grade-III Strength: 25 psi compressive strength supports rooftop applications
• Standard Panel Size: 1-1/2 in thickness, 4 ft x 8 ft board for efficient coverage
• Broad Approvals: Meets ASTM C1289 and multiple UL/FM, Miami-Dade, and Florida product approvals

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Specifications Table:

Specification	Details
Thickness	1-1/2" (38.1 mm)
Length	8' (2440 mm)
Width	4' (1220 mm)
Compressive Strength	25 psi (Grade-III)
Core	Closed-cell polyisocyanurate foam
Facers	Non-asphaltic, fiber-reinforced organic felt, integrally bonded
Style	Polyiso
Unit of Measure	SQ|PC
Applicable Standards/Approvals	ASTM C1289; CAN/ULC-S704; CCMC No. 12423-L; UL Certified for Canada; UL 1256; UL 790 (ASTM E108); UL 263 (ASTM E119); UL 1897; FM 4450/4470; IBC Chapter 26 & NBC; California State; Miami-Dade County Approved; Florida Product Approved; Greenguard Certified; RCI Approved; NRCA Approved; AIA Approved; U.S. Green Building Council Member
Area Coverage	1024 sq. ft. per unit
Item Weight	13 lb
Product Number	ATLAC3251548

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Frequently Asked Questions (FAQ):

Q: What is the board size and thickness?
A: Each panel is 4 ft x 8 ft and 1-1/2 in thick.

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Q: What is the compressive strength?
A: Grade-III provides 25 psi compressive strength.

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Q: What type of facers does it use?
A: Non-asphaltic, fiber-reinforced organic felt facers integrally bonded to the polyiso core.

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Q: What standards and approvals does it meet?
A: ASTM C1289, CAN/ULC-S704, UL 1256/790/263/1897, FM 4450/4470, Miami-Dade and Florida approvals, among others.

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Q: Where is this insulation typically used?
A: As roof insulation in commercial or residential low-slope roofing systems requiring high thermal performance and strength.

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Sleek Strength for Elevated Roofscapes

This streamlined board brings a quiet confidence to the envelope, marrying crisp geometry with robust performance. The fiber-reinforced facer lends a tailored finish while the polyiso core delivers enduring warmth. Layer it to sculpt clean, modern rooflines and maintain a refined silhouette. A discerning essential for luxurious, high-performing architecture.

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Choose ACFoam-III to upgrade your roof’s efficiency and strength with proven, approved performance.

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