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
  • Free Standard Shipping on $100+ Orders to the USA.
  • 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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4.2 ★★★★★
Based on 13 reviews
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SM
Boise, US
★★★★★ 5
Great purchase
Material Type: Recycled Polyester, Color: Dark Navy, Size: X-Large
Purchased several shirts, all were great quality. You never know what you’ll get when you purchase sight unseen, these are worth it. Great value, style, and comfort. Color is exactly what you see online. True to size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2025
J
Verified Purchase
Jocelyn
Omaha, US
★★★★★ 4
Great quality for price
Material Type: Recycled Polyester, Color: Red Stripe, Size: XX-Large
Very impressed with the shirt quality, especially for such a low price. Sizing is accurate.
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Reviewed in the United States on May 21, 2026
S
Verified Purchase
Shawn SnoMan Thompson
Omaha, US
★★★★★ 5
For work or casual wear, this polo is a great choice.
Material Type: Recycled Polyester, Color: Port Stripe, Size: X-Large
I really like this polo. I've been wearing it once a week or every other week since November. Its very comfortable and breathable. This polo feels like it should last a while. The fit is good. I typcally wear XL and this XL fits great. I've pruchased it in both burgundy and black so far. I definitely recommend this shirt. For work or casual wear, this will look good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
T
Verified Purchase
Tech Dad
Natrona Heights, US
★★★★★ 5
Great value: These are my go-to work from home shirt
Material Type: Recycled Polyester, Color: Blue, Size: X-Large
I’ve been pleasantly surprised by these shirts and wear them weekly for Zoom calls, since I’m still working from home these days. I figured at the price point it was worth trying them out, and now I’ve bought several in different colors. They aren’t super soft, but they are comfy and look nice. I’m 6’1” ~220 pounds, and the XL slim fit still has plenty of room. I imagine the regular cut is incredibly boxy and oversized. The difference between polyester vs recycled polyester is inconsequential. I typically buy expensive golf shirts, and these definitely aren’t as nice. They are a fraction of the cost though and a great “beater” work shirt / hang out shirt. It’s nice wearing something that looks and feels decent, but if something happens to it, you can toss and it and pick up another for the cost of a chipotle burrito.
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Reviewed in the United States on May 29, 2022
E
Verified Purchase
Espresso
Alexandria, US
★★★★★ 3
Great price, not great quality
Material Type: Recycled Polyester, Color: Black, Size: Small
Simple, straight forward all black polo. I am a size medium woman (with some room since I don't like form-fitting) and bought a men's small. Fits perfectly for my frame. Long enough to tuck in for my part-time extra weekend job uniform. Also suitable for the golf course. A little thin, and if you hold it up to light you can sort of see through it. *Not* flowy, soft and smooth fabric like a rash guard/sun shirt - more structured than that. But it's cool and does the job for the price under $10.
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Reviewed in the United States on August 13, 2024

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