Atlas 1" Polyiso Roof Insulation Board (4'x8')
Closed-cell polyisocyanurate roof insulation with fiber-reinforced organic felt facers for durable, high-performance thermal protection. This Grade-II board provides 20 psi compressive strength and consistent LTTR values across thickness options. Ideal for commercial and residential roofing assemblies.
Key Features:
- Durable Construction: Closed-cell polyiso core bonded to non-asphaltic, fiber-reinforced felt facers for strength and stability
- Grade-II Strength: 20 psi compressive rating supports robust roofing assemblies
- Thermal Performance: Engineered for long-term thermal resistance (LTTR) to improve energy efficiency
- Code Compliance: Meets major standards including ASTM C1289, CAN/ULC-S704, and multiple UL/FM approvals
- Standard Size: 1" thickness in a 4' x 8' sheet for efficient coverage and handling
Specifications Table:
| Specification | Details |
| Product Name | 1" x 4' x 8' Grade-II (20 psi) Polyiso Roof Insulation |
| Brand | Atlas |
| Style | Polyiso |
| Thickness | 1" (25.4 mm) |
| Length | 8' (2440 mm) |
| Width | 4' (1220 mm) |
| Compressive Strength | Grade-II (20 psi) |
| Facers | Non-asphaltic, fiber-reinforced organic felt |
| Core | Closed-cell polyisocyanurate (polyiso) |
| Item Weight | 10 lb |
| Unit of Measure | SQ|SHT|PC |
| 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; 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_004 |
| Product Number | ATL1ISO |
| Area per Unit | 1536 Sq. Ft. per Unit |
| Long Description | Closed-cell polyisocyanurate foam core integrally bonded to non-asphaltic, fiber-reinforced organic felt facers. ACFoam-II is offered in a variety of thicknesses, providing long-term thermal resistance (LTTR) values. |
Frequently Asked Questions (FAQ):
Q: What is the board size and thickness?
A: Each board is 4 feet by 8 feet with a 1-inch thickness.
Q: What type of facers does it use?
A: Non-asphaltic, fiber-reinforced organic felt facers bonded to the polyiso core.
Q: Is it approved for use under building codes?
A: Yes, it meets ASTM C1289, CAN/ULC-S704, and carries UL, FM, Miami-Dade, and Florida approvals, among others.
Q: What is the compressive strength?
A: Grade-II with a 20 psi compressive strength rating.
Q: Where is this insulation typically used?
A: In roof assemblies for commercial and residential projects requiring high thermal performance and code-compliant materials.
Sleek Thermal Armor for Modern Roofscapes
This board delivers a refined, minimal profile while elevating the roofs performance with confident thermal integrity. The fiber-reinforced felt facer lends a sophisticated, tailored finish that layers seamlessly beneath membranes. Pair it with clean-lined flashing and a monochrome roof palette for a crisp, contemporary silhouette. A smart essential for luxurious, energy-conscious architecture.
Upgrade your roofs performance with Atlas ACFoam-IIadd to cart for code-compliant, energy-efficient insulation today.
