SKU: 59158305102

Atlas ACFoam-III Grade-III Polyiso CGF Roof Insulation, 1-1/2 in x 4 ft x 8 ft (25 psi)

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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

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Description

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.


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

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

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.


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


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


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.


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.


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.


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

Warranty

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 59158305102

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Benjamin Feliciano
Waukegan, US
★★★★★ 5
Easy install
Color: Black, Size: 15.7", Color: Black, Size: 15.7"
w I recently installed these bathroom shelves, and they completely exceeded my expectations. The quality feels solid and durable, and once mounted, they sit perfectly level without any wobble. I love how clean and modern they look — they instantly elevated the whole feel of the bathroom. The shelving space is surprisingly generous. I’m able to store everything from toiletries to décor pieces without the shelves feeling cluttered or overloaded. The finish also holds up well in humidity, which is a big deal for a bathroom environment. Installation was straightforward, the hardware included worked perfectly, and the shelves feel like they’re built to last. Overall, these shelves deliver both style and function, and I’m extremely pleased with how they turned out. Highly recommended if you want a simple upgrade that makes a big impact.
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Reviewed in the United States on February 22, 2026
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Emma
Pawtucket, US
★★★★★ 4
Looks like photos!
Color: Black, Size: 15.7", Color: Black, Size: 15.7"
Good quality, looks like photo! Pretty easy to install had a little hard time hanging but other wise great! Use 2 shelf’s in one spot and other in another spot!
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Reviewed in the United States on April 29, 2026
D
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Dezteni
Natrona Heights, US
★★★★★ 5
Nice aesthetic
Color: Black, Size: 15.7"
I love these , it’s so convenient for storage and it’s really cute as well. The installation was really easy as well
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Reviewed in the United States on May 6, 2026
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Peanut
Port Orchard, US
★★★★★ 5
Easy install shelving with heavy duty anchors
Color: Black, Size: 15.7"
Love this! The hardware includes heavy duty anchors, so this will allow objects that has some weight. The shelves can be arranged any way you like.
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Reviewed in the United States on May 17, 2026
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Ellen Mitchell
Waukegan, US
★★★★★ 5
Fun!
Color: Black, Size: 15.7"
Easy install and cute!
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Reviewed in the United States on April 29, 2026

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