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home > Atlas ACFoam-II Polyiso Roof Insulation Board, 1 in x 4 ft x 8 ft, Grade-II (20 psi) > Atlas ACFoam-II Polyiso Roof Insulation Board, 1 in x 4 ft x 8 ft, Grade-II (20 psi)

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Atlas ACFoam-II Polyiso Roof Insulation Board, 1 in x 4 ft x 8 ft, Grade-II (20 psi)Atlas 1" Polyiso Roof Insulation Board (4'x8') Closed cell polyisocyanurate roof insulation with fiber reinforced organic felt facers for durable, high performance thermal protection. This Grade II board provides 20 psi compressive strength and consistent LTTR values across thickness options. Ideal for commercial and residential roofing assemblies. Key Features: Durable Construction: Closed cell polyiso core bonded to non asphaltic, fiber reinforced

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Atlas 1" Polyiso Roof Insulation Board (4'x8')

Name: Atlas ACFoam-II Polyiso Roof Insulation Board, 1 in x 4 ft x 8 ft, Grade-II (20 psi)
Brand: azure.archi
SKU: 58596675667
Price: 513.22 USD
Availability: InStock
Rating: 4.7839 (871 reviews)

Closed-cell polyisocyanurate roof insulation with fiber-reinforced organic felt facers for durable, high-performance thermal protection. This Grade-II board provides 20 psi compressive strength and consistent LTTR values across thickness options. Ideal for commercial and residential roofing assemblies.

Key Features:

Durable Construction: Closed-cell polyiso core bonded to non-asphaltic, fiber-reinforced felt facers for strength and stability
Grade-II Strength: 20 psi compressive rating supports robust roofing assemblies
Thermal Performance: Engineered for long-term thermal resistance (LTTR) to improve energy efficiency
Code Compliance: Meets major standards including ASTM C1289, CAN/ULC-S704, and multiple UL/FM approvals
Standard Size: 1" thickness in a 4' x 8' sheet for efficient coverage and handling

Specifications Table:

Specification	Details
Product Name	1" x 4' x 8' Grade-II (20 psi) Polyiso Roof Insulation
Brand	Atlas
Style	Polyiso
Thickness	1" (25.4 mm)
Length	8' (2440 mm)
Width	4' (1220 mm)
Compressive Strength	Grade-II (20 psi)
Facers	Non-asphaltic, fiber-reinforced organic felt
Core	Closed-cell polyisocyanurate (polyiso)
Item Weight	10 lb
Unit of Measure	SQ\|SHT\|PC
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; 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 Manufacturer Number	AC2_004
Product Number	ATL1ISO
Area per Unit	1536 Sq. Ft. per Unit
Long Description	Closed-cell polyisocyanurate foam core integrally bonded to non-asphaltic, fiber-reinforced organic felt facers. ACFoam-II is offered in a variety of thicknesses, providing long-term thermal resistance (LTTR) values.

Frequently Asked Questions (FAQ):

Q: What is the board size and thickness?
A: Each board is 4 feet by 8 feet with a 1-inch thickness.

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

Q: Is it approved for use under building codes?
A: Yes, it meets ASTM C1289, CAN/ULC-S704, and carries UL, FM, Miami-Dade, and Florida approvals, among others.

Q: What is the compressive strength?
A: Grade-II with a 20 psi compressive strength rating.

Q: Where is this insulation typically used?
A: In roof assemblies for commercial and residential projects requiring high thermal performance and code-compliant materials.

Sleek Thermal Armor for Modern Roofscapes

This board delivers a refined, minimal profile while elevating the roof’s performance with confident thermal integrity. The fiber-reinforced felt facer lends a sophisticated, tailored finish that layers seamlessly beneath membranes. Pair it with clean-lined flashing and a monochrome roof palette for a crisp, contemporary silhouette. A smart essential for luxurious, energy-conscious architecture.

Upgrade your roof’s performance with Atlas ACFoam-II—add to cart for code-compliant, energy-efficient insulation today.