
GAF EnergyGuard Ultra Grade-II Polyiso Roof Insulation, 2.5 in, 20 psi, 4 ft x 8 ft Panels
EnergyGuard Ultra Grade-II Polyiso Roof Insulation (2.5 in)
High-performance polyiso roof insulation board featuring coated glass facers bonded to a rigid polyiso foam core. Designed for commercial roofing systems, it delivers Grade-II compressive strength (20 psi) with reliable thermal efficiency and broad code approvals.
Key Features:
- Durable Construction: Coated glass facers bonded to a rigid polyiso foam core for long-term performance
- High Compressive Strength: Grade-II rating (20 psi) suitable for robust commercial roof assemblies
- Code Compliant: FM Approved, UL Classified, Miami-Dade County and Florida Building Code approved
- Efficient Coverage: 4 ft x 8 ft panels; 2.5 in thickness ideal for building out R-value
- Quality Assurance: Meets ASTM C1289 Type II (Class 2) and carries the PIMA Quality Mark
Specifications Table:
| Specification | Details |
|---|---|
| Product Name | EnergyGuard Ultra Grade-II (20 psi) Polyiso Roof Insulation |
| Brand | GAF |
| SKU | 261002 |
| Manufacturer Number | ULTRA 2.5 |
| Product Number | GAF25UISO48 |
| Style | Polyiso |
| Thickness | 2.5 in |
| Dimensions | 4 ft x 8 ft |
| Area Coverage | 608 sq ft |
| Compressive Strength | 20 psi (Grade-II) |
| Facers | Coated glass facers |
| Core | Polyiso foam core |
| Applicable Standards/Approvals | FM Approved; UL Classified; Florida Building Code; Miami-Dade County Approved; PIMA Quality Mark; ASTM C1289 Type II (Class 2); ASTM D1621; ASTM D3273; ASTM D2126; ASTM C209; ASTM E96; ASTM E84 |
| Unit of Measure | SQ | PC |
| Pieces per Bundle | 19 |
| Item Weight | 16.096 lb |
Frequently Asked Questions (FAQ):
Q: What are the panel dimensions and thickness?
A: Each board measures 4 ft x 8 ft and is 2.5 inches thick.
Q: Is this product approved for use in high-wind regions?
A: Yes. It holds Miami-Dade County approval and Florida Building Code approval.
Q: What is the compressive strength rating?
A: Grade-II with a nominal compressive strength of 20 psi.
Q: What facers does it use?
A: Coated glass facers on both sides of a polyiso foam core.
Q: Which standards does it meet?
A: FM Approved, UL Classified, ASTM C1289 Type II (Class 2), ASTM D1621, D3273, D2126, C209, E96, E84, and PIMA Quality Mark.
Sculpted Thermal Performance for Modern Rooflines
This insulation board lends a clean, disciplined layer to any roof assembly, refining the silhouette while elevating thermal comfort. The coated glass facer is the quiet hero—sleek, resilient, and impeccably engineered. Pair it with a dark membrane to create a crisp, architectural profile that feels both tailored and enduring. It’s an elegantly essential foundation for truly luxurious, efficient spaces.
Choose EnergyGuard Ultra Grade-II to strengthen your roof assembly with proven 20 psi performance and code-approved efficiency.
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Description
EnergyGuard Ultra Grade-II Polyiso Roof Insulation (2.5 in)
High-performance polyiso roof insulation board featuring coated glass facers bonded to a rigid polyiso foam core. Designed for commercial roofing systems, it delivers Grade-II compressive strength (20 psi) with reliable thermal efficiency and broad code approvals.
Key Features:
- Durable Construction: Coated glass facers bonded to a rigid polyiso foam core for long-term performance
- High Compressive Strength: Grade-II rating (20 psi) suitable for robust commercial roof assemblies
- Code Compliant: FM Approved, UL Classified, Miami-Dade County and Florida Building Code approved
- Efficient Coverage: 4 ft x 8 ft panels; 2.5 in thickness ideal for building out R-value
- Quality Assurance: Meets ASTM C1289 Type II (Class 2) and carries the PIMA Quality Mark
Specifications Table:
| Specification | Details |
|---|---|
| Product Name | EnergyGuard Ultra Grade-II (20 psi) Polyiso Roof Insulation |
| Brand | GAF |
| SKU | 261002 |
| Manufacturer Number | ULTRA 2.5 |
| Product Number | GAF25UISO48 |
| Style | Polyiso |
| Thickness | 2.5 in |
| Dimensions | 4 ft x 8 ft |
| Area Coverage | 608 sq ft |
| Compressive Strength | 20 psi (Grade-II) |
| Facers | Coated glass facers |
| Core | Polyiso foam core |
| Applicable Standards/Approvals | FM Approved; UL Classified; Florida Building Code; Miami-Dade County Approved; PIMA Quality Mark; ASTM C1289 Type II (Class 2); ASTM D1621; ASTM D3273; ASTM D2126; ASTM C209; ASTM E96; ASTM E84 |
| Unit of Measure | SQ | PC |
| Pieces per Bundle | 19 |
| Item Weight | 16.096 lb |
Frequently Asked Questions (FAQ):
Q: What are the panel dimensions and thickness?
A: Each board measures 4 ft x 8 ft and is 2.5 inches thick.
Q: Is this product approved for use in high-wind regions?
A: Yes. It holds Miami-Dade County approval and Florida Building Code approval.
Q: What is the compressive strength rating?
A: Grade-II with a nominal compressive strength of 20 psi.
Q: What facers does it use?
A: Coated glass facers on both sides of a polyiso foam core.
Q: Which standards does it meet?
A: FM Approved, UL Classified, ASTM C1289 Type II (Class 2), ASTM D1621, D3273, D2126, C209, E96, E84, and PIMA Quality Mark.
Sculpted Thermal Performance for Modern Rooflines
This insulation board lends a clean, disciplined layer to any roof assembly, refining the silhouette while elevating thermal comfort. The coated glass facer is the quiet hero—sleek, resilient, and impeccably engineered. Pair it with a dark membrane to create a crisp, architectural profile that feels both tailored and enduring. It’s an elegantly essential foundation for truly luxurious, efficient spaces.
Choose EnergyGuard Ultra Grade-II to strengthen your roof assembly with proven 20 psi performance and code-approved efficiency.






















