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Carlisle SynTec SecurShield Grade-II 20 psi Polyiso Roof Insulation Panel, 2.5 in. x 4 ft. x 8 ft.
Regular price $66.15Orders start at $399 — combine any items to reach the minimum. Learn more
Carlisle SynTec SecurShield Grade-II 20 psi Polyiso Roof Insulation Panel, 2.5 in. x 4 ft. x 8 ft.
This is a 2.5 in. thick, 4 ft. x 8 ft. Carlisle SynTec SecurShield Grade-II (20 psi) rigid polyisocyanurate roof insulation panel, sold as one piece. Its closed-cell polyiso core is bonded to premium coated-glass facers with ReadyFlash Technology for controlled adhesive flash-off. Use it under Carlisle SynTec single-ply membranes in commercial roof assemblies requiring elevated R-value.
Key Features:
- ReadyFlash Technology: A dark coated-glass facer on one side and a light facer on the other let contractors control membrane adhesive flash-off time by board orientation.
- 20 psi Compressive Strength: This Grade-II panel is rated for 20 psi compressive resistance, per the item specification.
- High R-Value per Inch: Polyiso delivers the highest R-value per inch of commercially available roof insulation, per the manufacturer's data sheet.
- Mid-Range Thickness: The 2.5 in. thickness adds thermal value without the handling challenges of the thickest boards.
- Premium Facers: Premium performance coated-glass facers improve fire resistance, moisture resistance and dimensional stability.
- Code Approvals: Complies with ASTM C1289-11 Type II Class 2, IBC Section 2603, UL 790/263/1256, FM 4450/4470, Florida Building Code and California Title 24.
- Sustainable Formulation: HFC- and HCFC-free with zero ozone-depleting components, CDPH compliant and a PIMA Quality Mark participant.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Carlisle SynTec |
| Sell unit | 1 panel, 4 ft x 8 ft x 2.5 in. |
| Product line | SecurShield Polyiso with ReadyFlash Technology |
| Material | Closed-cell polyisocyanurate foam core with coated-glass facers (CGF) |
| Dimensions | 4 ft x 8 ft, 2.5 in. thick |
| Thickness | 2.5 in |
| Grade / compressive strength | Grade-II (20 psi) |
| Coverage per unit | 32 sq ft per panel |
| Approvals | ASTM C1289-11 Type II Class 2; IBC Section 2603; UL 790, 263, 1256; FM 4450/4470; CAN/ULC S704 Type 2 & 3 Class 2; Florida Building Code Approved; UL Classified; PIMA Quality Mark; California Title 24; LEED |
| Weight | 18.8 lb per panel |
| Facer | Dark CGF on one side, light CGF on the other (ReadyFlash) |
| Intended use | Rigid roof insulation under single-ply membrane roofing |
Coverage & How Much You Need:
One 4 ft. x 8 ft. panel covers 32 sq ft of roof deck. Divide total roof area by 32 to estimate panel count, allowing for layout cuts and perimeters.
Fit and Compatibility:
Designed for use under Carlisle SynTec single-ply roofing membranes with Carlisle membrane adhesives; the ReadyFlash facers let you control adhesive flash-off time. Membrane, adhesives, fasteners and cover board are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in the order?
A: One 2.5 in. thick, 4 ft. x 8 ft. SecurShield Grade-II (20 psi) polyiso insulation panel; membrane and adhesives are sold separately.
Q: How many panels do I need?
A: Each panel covers 32 sq ft, so divide your roof area by 32 and add a waste allowance for cuts and perimeter fit.
Q: What does ReadyFlash Technology do?
A: Each panel has a dark facer on one side and a light facer on the other; applying adhesive to the dark side speeds flash-off (up to 2x on cool days, up to 4x on warm days) while the light side slows it.
Q: What standards does this panel meet?
A: It is listed to ASTM C1289-11 Type II Class 2, IBC Section 2603, UL 790/263/1256, FM 4450/4470, CAN/ULC S704, Florida Building Code and California Title 24.
Q: How is it installed?
A: Install per Carlisle's roofing system specifications and local code, typically adhered or mechanically attached to the deck with membrane-approved adhesives or fasteners and plates.
Q: What is the compressive strength?
A: This Grade-II panel is rated at 20 psi compressive strength.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
The 2.5 in. thickness is a practical middle ground for meeting higher R-value requirements while keeping a single-layer board height that fasteners can still fully engage. At about 18.8 lb per 32 sq ft board, two-person handling is advisable on windy decks. Use the dark ReadyFlash facer toward the membrane to accelerate adhesive flash-off in cool conditions, and stagger joints and follow Carlisle's attachment specifications for wind-uplift compliance.
Handle large rigid foam boards carefully on windy rooftops and follow OSHA fall-protection requirements and local building code.
Order the Carlisle SynTec SecurShield 2.5 in. 4x8 Grade-II polyiso panel today for high-R-value roof insulation.
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