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home > Atlas ACFoam-II 1-4/5 in. x 4 ft. x 4 ft. Polyiso Roof Insulation Board > Atlas ACFoam-II 1-4/5 in. x 4 ft. x 4 ft. Polyiso Roof Insulation Board

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Atlas ACFoam-II 1-4/5 in. x 4 ft. x 4 ft. Polyiso Roof Insulation Board1 4 5" Polyiso Roof Insulation Board, 4' x 4' Closed cell polyisocyanurate roof insulation with a fiber reinforced organic felt facer for durable, energy efficient roofing assemblies. The ACFoam II board delivers reliable long term thermal resistance and is available in multiple thicknesses for design flexibility. Key Features: Energy Efficient Polyiso: Closed cell polyisocyanurate core provides strong LTTR thermal performance for roof systems.

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1-4/5" Polyiso Roof Insulation Board, 4' x 4'

Name: Atlas ACFoam-II 1-4/5 in. x 4 ft. x 4 ft. Polyiso Roof Insulation Board
Brand: azure.archi
SKU: 33965428527
Price: 256.61 USD
Availability: InStock
Rating: 4.3456 (2219 reviews)

Closed-cell polyisocyanurate roof insulation with a fiber-reinforced organic felt facer for durable, energy-efficient roofing assemblies. The ACFoam-II board delivers reliable long-term thermal resistance and is available in multiple thicknesses for design flexibility.

Key Features:

Energy-Efficient Polyiso: Closed-cell polyisocyanurate core provides strong LTTR thermal performance for roof systems.
Durable Facers: Non-asphaltic, fiber-reinforced organic felt facers enhance rigidity and compatibility with roofing membranes.
Sized for Easy Handling: 4 ft. x 4 ft. boards at 1-4/5 in. thickness streamline installation and staging on the roof.
Code-Compliant: Meets major standards and approvals including ASTM C1289, UL, FM 4450/4470, Miami-Dade, and Florida Product Approval.
Lightweight Board: Approximately 7 lb per piece to help reduce labor fatigue during placement.

Specifications Table:

Specification	Details
Product name	1-4/5" x 4' x 4' Polyiso Roof Insulation
Brand	Atlas
Model / Series	ACFoam-II
Thickness	1-4/5"
Length	4' (1220 mm)
Width	4' (1220 mm)
Core material	Closed-cell polyisocyanurate (polyiso)
Facer	Non-asphaltic, fiber-reinforced organic felt facers
Item weight	7 lb (per piece)
Coverage	416 sq. ft. per unit
Applicable standards and 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	45493
Manufacturer number	AC2_024
SKU product number	ATL18ISO4
Unit of measure	PLT \| SQ \| PC

Frequently Asked Questions (FAQ):

Q: What is the board size and thickness?
A: Each board measures 4 ft. x 4 ft. with a thickness of 1-4/5 in.

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

Q: Is this product approved for use in code-compliant roofing systems?
A: Yes. It lists approvals such as ASTM C1289, UL, FM 4450/4470, Miami-Dade County, and Florida Product Approval.

Q: How much does each board weigh?
A: Approximately 7 lb per piece.

Q: What is the coverage per unit?
A: 416 sq. ft. per unit, as specified for this SKU.

Sleek Thermal Backbone for Modern Roofscapes

This insulation board becomes the quiet hero of a refined roofline, delivering crisp performance behind the scenes. Its felt-faced surface reads clean and purposeful, a tailored layer that supports streamlined assemblies. Pair it with cool roof membranes for a sophisticated, high-contrast finish and elevated efficiency. It’s a discreet essential that underpins a polished, luxury envelope.

Upgrade your roof’s efficiency and reliability with Atlas ACFoam-II—add the boards to your project plan today.