Atlas ACFoam-II Polyiso Roof Insulation Board, 3.3 in. Thick, 4 ft. x 8 ft.
Regular price $1,026.433.3" Polyiso Roof Insulation Board (4' x 8')
Closed-cell polyisocyanurate roof insulation board with fiber-reinforced organic felt facers for superior long-term thermal resistance. Ideal for commercial and residential low-slope roofing systems, this 3.3-inch thick board comes in a 4-by-8-foot sheet for efficient coverage.
Key Features:
- High Thermal Performance: Polyiso core delivers strong LTTR for energy-efficient roofs
- Durable Felt Facers: Non-asphaltic, fiber-reinforced organic facers enhance strength and adhesion
- Code Compliant: Meets ASTM C1289 and multiple UL, FM, and regional approvals including Miami-Dade and Florida Product Approval
- Versatile Application: Suitable for a variety of low-slope roofing assemblies as cover or insulation board
- Large Panel Size: 4' x 8' sheets simplify layout and speed installation
Specifications Table:
| Specification | Details |
|---|---|
| Product name | 3.3" x 4' x 8' Polyiso Roof Insulation |
| Brand | Atlas |
| Series | ACFoam-II |
| Thickness | 3.3" |
| Length | 8' (2440 mm) |
| Width | 4' (1220 mm) |
| Core material | Closed-cell polyisocyanurate (polyiso) foam |
| Facers | Non-asphaltic, fiber-reinforced organic felt facers |
| Unit of measure | SQ | PLT | PC |
| Approximate weight | 33 lb |
| Applicable standards/approvals | ASTM C1289; CAN/ULC-S704; CCMC No. 12464-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; Miami-Dade County Approved; Florida Product Approved; UL Greenguard Gold Certified; RCI Approved; AIA Approved; U.S. Green Building Council Member; National Roofing Contractors Association |
| SKU manufacturer number | AC2_054 |
| Seller product number | ATL33ISO |
| Coverage (listing note) | 448 sq. ft. per unit (as listed) |
Frequently Asked Questions (FAQ):
Q: What are the board dimensions and thickness?
A: Each board is 4 feet by 8 feet and 3.3 inches thick.
Q: What facers are used on this insulation?
A: It uses non-asphaltic, fiber-reinforced organic felt facers bonded to a polyiso foam core.
Q: Is this product code approved?
A: Yes—complies with ASTM C1289 and carries UL, FM, Miami-Dade, and Florida Product Approvals, among others.
Q: What is the typical use?
A: Designed for low-slope roofing systems to provide thermal insulation and a stable substrate within the roof assembly.
Q: How much does one board weigh?
A: Approximately 33 lb per board.
Sleek Thermal Armor for Modern Rooflines
This polyiso board brings a refined, architectural polish to roof assemblies while elevating performance. The fiber-felt facer offers a tailored, uniform surface that integrates beautifully beneath membranes. Layer it to sculpt a crisp, contemporary profile and harness impressive thermal efficiency. It’s a quiet luxury essential—clean, smart, and impeccably composed.
Boost your roof’s efficiency and reliability—choose Atlas ACFoam-II 3.3" Polyiso today.
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