Atlas ACFoam-III Tapered Polyiso Roof Insulation, Grade-III 25 psi, 4 ft x 4 ft, 1-1/4 in to 1-1/2 in
Regular price $641.52Atlas Tapered Polyiso Roof Insulation, Grade-III (25 psi)
Closed-cell polyisocyanurate roof insulation board with inorganic coated glass facers for tapered applications. Designed to promote positive drainage while delivering long-term thermal resistance (LTTR) in commercial or residential roofing systems.
Key Features:
- Tapered Design: Factory-tapered panels help achieve positive roof drainage and reduce ponding water
- Durable Construction: Closed-cell polyiso core bonded to inorganic coated glass facers for strength and moisture resistance
- High Compressive Strength: Grade-III 25 psi rating supports foot traffic and roof assemblies
- Thermal Performance: Delivers reliable long-term thermal resistance (LTTR) to improve energy efficiency
- Convenient Size: 4' x 4' panels; thickness ranges from 1-1/4" to 1-1/2" for smooth transitions
Specifications Table:
| Specification | Details |
|---|---|
| Product Type | Tapered polyisocyanurate (polyiso) roof insulation |
| Brand | Atlas |
| Model / Series | ACFoam-III |
| Grade / Compressive Strength | Grade-III, 25 psi |
| Panel Size | 4' x 4' (1220 mm x 1220 mm) |
| Thickness Range | 1-1/4" to 1-1/2" |
| Core | Closed-cell polyiso foam |
| Facers | Inorganic coated glass facers |
| Coverage | 608 sq. ft. per unit |
| Unit of Measure | PC |
| 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 |
| Length | 4' (1220 mm) |
| Width | 4' (1220 mm) |
| Style | Polyiso |
| Manufacturer Number | TP2_25PSI_00 |
| Product Number | ATLT2G3 |
Frequently Asked Questions (FAQ):
Q: What is the compressive strength rating?
A: This Grade-III panel is rated at 25 psi, suitable for many commercial roof assemblies.
Q: What are the panel dimensions and thickness range?
A: Each panel is 4 ft x 4 ft with a thickness taper from 1-1/4 in to 1-1/2 in.
Q: Is this product compatible with common roofing systems?
A: Yes. It is widely approved and listed under standards such as ASTM C1289, UL, FM 4450/4470, and others—verify specific assembly requirements in the product data sheet.
Q: What facers does it use?
A: It features inorganic coated glass facers bonded to a closed-cell polyiso core.
Q: How much area does a unit cover?
A: 608 square feet per unit, per the product listing.
Sculpted Insulation for Sleek, High-Performance Rooflines
This tapered polyiso board shapes a roof with intention, guiding water elegantly while preserving the clean geometry of the plane. The coated glass facers offer a refined, durable skin that partners beautifully with premium membranes. Use it to create subtle transitions that disappear to the eye yet elevate performance. It’s a quiet luxury—smart, resilient insulation that underpins sophisticated architecture.
Elevate your roof’s performance and drainage with Atlas ACFoam-III tapered polyiso—add it to your project today.
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