Atlas ACFoam-II 2.2-in x 4-ft x 8-ft Grade-II (20 psi) Polyiso Roof Insulation Board

Atlas ACFoam-II 2.2-in x 4-ft x 8-ft Grade-II (20 psi) Polyiso Roof Insulation Board

Regular price $1,026.43

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2.2" Polyiso Roof Insulation Board, 4x8

Closed-cell polyisocyanurate board with fiber-reinforced organic felt facers for durable, high-performance roof insulation. Offered as ACFoam-II Grade-II (20 psi) with long-term thermal resistance for a variety of roofing systems.


Key Features:

  • Durable Polyiso Core: Closed-cell polyisocyanurate provides strong thermal performance and moisture resistance.
  • Reinforced Facers: Non-asphaltic, fiber-reinforced organic felt facers enhance dimensional stability and bonding.
  • High Compressive Strength: Grade-II (20 psi) for robust roof applications and traffic resistance during installation.
  • Large Coverage: 4-ft x 8-ft panels; 608 sq. ft. per unit streamlines installation on big roofs.
  • Code-Ready Approvals: Meets ASTM C1289 and multiple UL, FM, and regional approvals for compliance.

Specifications Table:

Specification Details
Product name 2.2" x 4' x 8' Grade-II (20 psi) Polyiso Roof Insulation
Brand Atlas
Style Polyiso
Model / Product Number ATL22ISO
Manufacturer Number 22A
Material Closed-cell polyisocyanurate foam core
Facers Non-asphaltic, fiber-reinforced organic felt facers
Thickness 2.2"
Width 4' (1220 mm)
Length 8' (2440 mm)
Compressive strength Grade-II (20 psi)
Unit of measure SQ | PC
Coverage per unit 608 sq. ft.
Weight 32 lb
Applicable standards and approvals ASTM C1289; CAN/ULC-S704; CCMC No. 12464-L; UL Certified for Canada; UL 1256 Classification; 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

Frequently Asked Questions (FAQ):

Q: What are the board dimensions and thickness?
A: Each board is 4 ft x 8 ft with a thickness of 2.2 inches.


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


Q: What facers are used?
A: Non-asphaltic, fiber-reinforced organic felt facers bonded to the polyiso foam core.


Q: Is this product approved for major codes and standards?
A: Yes—meets ASTM C1289 and carries UL, FM, IBC/NBC, Miami-Dade, Florida Product Approval, and GREENGUARD Gold certifications, among others.


Q: How much area does a unit cover?
A: 608 square feet per unit.


Sleek Strength for Streamlined Roof Design

ACFoam-II’s refined profile brings crisp, modern order to the roof plane while delivering dependable thermal performance. Its fiber-reinforced felt facers create a tailored surface that feels purposeful and elevated. Pair with clean-lined single-ply membranes to underscore a minimalist roof aesthetic. This board is a quiet essential—powerful, polished, and indispensable to luxurious, efficient building envelopes.


Upgrade your roof’s performance and compliance with Atlas ACFoam-II 2.2" polyiso—order today for efficient coverage and dependable strength.

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