Atlas ACFoam-II Tapered GRF Fiber Felt Faced 2 Sides 4ft x 4ft Polyiso Roof Insulation Board - All Sizes

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Atlas ACFoam-II Tapered Polyiso Boards are engineered to promote positive drainage on low-slope roofing systems. With a durable fiber-reinforced felt facer on both sides and a tapered polyisocyanurate foam core, these boards provide excellent thermal performance while eliminating ponding water.

These boards are a smart choice for energy-efficient, code-compliant commercial roofing systems where drainage and insulation are key priorities.

Key Features:

Promotes effective roof drainage and prevents water pooling
High R-value per inch for superior insulation
Compatible with various commercial roofing systems
Fiber-reinforced facers for added strength and stability
Lightweight and easy to cut and install
Helps meet LEED® and energy code requirements
Manufactured in the USA

Slope	Taper Range (Min–Max Thickness)	R-Value	Sheets / Pallet	Sq Ft / Pallet
1/8 in/ft	0.5" – 1"	R-4.3	64	1024 sq ft
1/8 in/ft	1" – 1.5"	R-7.1	38	608 sq ft
1/8 in/ft	1.5" – 2"	R-10	26	416 sq ft
1/8 in/ft	2" – 2.5"	R-12.9	20	320 sq ft
1/4 in/ft	0.5" – 1.5"	R-5.7	48	768 sq ft
1/4 in/ft	1.5" – 2.5"	R-11.4	24	384 sq ft
1/2 in/ft	0.5" – 2.5"	R-8.6	32	512 sq ft

Certifications & Compliance

Complies with ASTM C1289 (Type II, Class 1)
UL, FM, Miami-Dade, and ICC-ES approved
Zero ozone-depleting components
Eligible for LEED® credit contribution

*Third Party Trademarks

All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.

Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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Atlas ACFoam-II Tapered GRF Fiber Felt Faced 2 Sides 4ft x 4ft Polyiso Roof Insulation Board - All Sizes

Key Features:

Certifications & Compliance

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