Atlas ACFoam-II Polyiso Roof Insulation Board, 3 in. x 4 ft. x 8 ft.
Regular price $1,026.433 in. Polyiso Roof Insulation Board (4x8)
Closed-cell polyisocyanurate roof insulation with fiber-reinforced organic felt facers for superior thermal performance. The 3-inch ACFoam-II board delivers high LTTR values and is sized 4 ft. x 8 ft. for efficient coverage on commercial and residential flat roofs.
Key Features:
- High Thermal Efficiency: Closed-cell polyiso core provides strong long-term thermal resistance (LTTR).
- Durable Facers: Non-asphaltic, fiber-reinforced organic felt facers add strength and stability.
- Code Compliant: Meets ASTM C1289 and multiple UL/FM standards; Miami-Dade and Florida approvals.
- Versatile Application: Suitable for a range of low-slope roofing systems and assemblies.
- Large Coverage: 4 ft. x 8 ft. boards streamline installation across wide roof areas.
Specifications Table:
| Specification | Details |
|---|---|
| Product Name | 3" x 4' x 8' Polyiso Roof Insulation |
| Brand | Atlas |
| Model/Series | ACFoam-II |
| Thickness | 3" (76.2 mm) |
| Length | 8' (2440 mm) |
| Width | 4' (1220 mm) |
| Core Material | Closed-cell polyisocyanurate (polyiso) foam |
| Facers | Non-asphaltic, fiber-reinforced organic felt facers |
| Coverage | 512 Sq. Ft. per Unit |
| Item Weight | 19.2 lb |
| Standards/Approvals | ASTM C1289; CAN/ULC-S704; CCMC No. 12464-L; UL 1256; UL 790 (ASTM E108); UL 263 (ASTM E119); UL 1897; FM 4450/4470; IBC Chapter 26 & NBC; Miami-Dade County Approved; Florida Product Approved; UL Greenguard Gold Certified; RCI Approved; AIA Approved; USGBC Member; NRCA |
| Manufacturer Number | AC2_050 |
| Product Number | ATL3ISO |
| Unit of Measure | SQ | SHT | PC |
| Description | ACFoam-II offered in various thicknesses delivering long-term thermal resistance (LTTR). |
Frequently Asked Questions (FAQ):
Q: What are the board dimensions and thickness?
A: Each board measures 4 ft. x 8 ft. with a 3 in. thickness.
Q: What is the core material?
A: Closed-cell polyisocyanurate (polyiso) foam.
Q: What type of facers are used?
A: Non-asphaltic, fiber-reinforced organic felt facers.
Q: Which standards and approvals does it meet?
A: ASTM C1289; CAN/ULC-S704; multiple UL standards (1256, 790, 263, 1897); FM 4450/4470; Miami-Dade and Florida Product Approvals; UL Greenguard Gold, among others.
Q: How much area does a unit cover?
A: 512 sq. ft. per unit.
Sculpted Warmth for Modern Rooflines
This polyiso board brings a refined practicality to the building envelope, wrapping your structure in quiet, confident performance. The felt-faced surface feels tailored, a sleek layer that elevates the craft of a low-slope roof. Pair it with a clean, monochrome membrane and crisp metal edges for an architectural, gallery-like finish. It’s the discreet luxury that keeps interiors serene and energy-savvy.
Insulate smarter—choose Atlas ACFoam‑II for high LTTR performance and code-ready reliability on your next roofing project.
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