SKU: 41526431043

Atlas ACFoam-III Tapered Polyiso Roof Insulation, 4 ft x 4 ft Panel, 1 in to 1-1/2 in Thickness

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Description

Atlas ACFoam-III Tapered Polyiso Roof Insulation, 4 ft x 4 ft Panel, 1 in to 1-1/2 in ThicknessTapered Polyiso Roof Insulation Panel, 4'x4', 1"1 1 2" Closed cell polyisocyanurate roof insulation with inorganic coated glass facers. This tapered ACFoam III panel promotes positive drainage while delivering long term thermal resistance for low slope roofing systems. Key Features: Tapered Design: Helps achieve positive roof drainage to reduce ponding water High Thermal Performance: Polyiso core provides strong LTTR for energy efficiency Durable

Tapered Polyiso Roof Insulation Panel, 4'x4', 1"–1-1/2"

Closed-cell polyisocyanurate roof insulation with inorganic coated glass facers. This tapered ACFoam-III panel promotes positive drainage while delivering long-term thermal resistance for low-slope roofing systems.


Key Features:

  • Tapered Design: Helps achieve positive roof drainage to reduce ponding water
  • High Thermal Performance: Polyiso core provides strong LTTR for energy efficiency
  • Durable Facers: Inorganic coated glass facers resist moisture and provide dimensional stability
  • Convenient Panel Size: 4 ft x 4 ft panel with 1 in to 1-1/2 in taper for layout flexibility
  • Code Compliance: Meets key standards including ASTM C1289 and multiple UL/FM approvals

Specifications Table:

Specification Details
Brand Atlas
Product name A (1" to 1-1/2") Tapered 4' x 4' Polyiso Roof Insulation
Core material Closed-cell polyisocyanurate (polyiso)
Facers Inorganic coated glass facers
Panel size 4 ft x 4 ft (1220 mm x 1220 mm)
Thickness range 1 in to 1-1/2 in (25.4 mm to 38 mm)
Type ACFoam-III tapered
Area per unit 608 sq. ft. per unit
Item weight 5.28 lb
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 Approved; 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
Manufacturer number TP2_009
Material number 12667

Frequently Asked Questions (FAQ):

Q: What are the panel dimensions and thickness range?
A: Each panel measures 4 ft x 4 ft and is tapered from 1 inch to 1-1/2 inches.


Q: What is the core material?
A: A closed-cell polyisocyanurate (polyiso) foam core integrally bonded to coated glass facers.


Q: Where is this product typically used?
A: Designed for low-slope roof systems where tapered insulation is needed to create positive drainage.


Q: Does it meet building codes and certifications?
A: Yes. It complies with ASTM C1289 and carries various UL, FM, Miami-Dade, and Florida Product Approvals, among others.


Q: How much area does a unit cover?
A: 608 square feet per unit, per the product data provided.


Sculpted Insulation for Sleek, Efficient Rooflines

This tapered polyiso panel refines the roof plane with quiet precision, directing water away while preserving a clean architectural silhouette. The coated glass facer offers a crisp, tailored surface that supports a disciplined roofing assembly. Pair it with dark membrane finishes to emphasize linear drainage patterns and a modern profile. It’s a discreet yet essential layer for a polished, high-performance building envelope.


Elevate your roofing performance and drainage—choose Atlas ACFoam-III Tapered Polyiso today.

Shipping Notes
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  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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]
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SKU: 41526431043

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Gary P.
Phoenix, US
★★★★★ 4
Fits fine.
Item Package Quantity: 1
Fits fine in my 2020 Honda CRV.
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Reviewed in the United States on March 7, 2026
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Atlanta
Louisville, US
★★★★★ 5
Cabin air filter
Item Package Quantity: 1
Works great! Easy to install, about 5 minutes or less. Will definitely purchase again and would recommend. Used on Honda CRV.
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Reviewed in the United States on May 23, 2026
M
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Mike P
Charlottesville, US
★★★★★ 5
It works.
Item Package Quantity: 1
All as shown and performs well. Reasonable price.
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Reviewed in the United States on April 3, 2026
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Sabby
Port Orchard, US
★★★★★ 5
Amazing product
Item Package Quantity: 1
Awesome product , fits perfect for Honda crv sport hybrid touring 2026 . Quality is amazing , looks like the original OEM part .
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Reviewed in the United States on May 13, 2026
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Mr Frosty
Massapequa, US
★★★★★ 5
Good fit, good value
Style: CF12436 Classic, Style: CF12436 Classic
Purchased this filter for my 2023 Outback. First off changing the cabin filter on this model Subaru is amazingly easy and can be done with no tools and no more then 5 minutes. Pictures posted show packaging, the paper "Blue" filter side, the "Black" charcoal side and the foam outer edge. The filter is well made and is very sturdy as the outer shell is plastic vs. other paper filters that are more flexible. Holding the filter in your hand and giving it a slite shake you can hear the activated charcoal within it. After installing the filter I had a few trips in the car, did I notice any difference in the air quality coming into the cabin....... no. But does this mean its not working? also no. What I can say is the filter fit snug and left no gaps, and with the plastic surroundings and foam in sure the filter will not be letting anything get by as it passes through the system. All and all this filter is well made and sturdy, and seems to be a good value with other paper only filters being about the same price.
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Reviewed in the United States on May 4, 2026

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