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.

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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

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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

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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.

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

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

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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.

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

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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.

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