Skip to content
Carlisle SynTec SecurShield Grade-II 20 psi Polyiso Roof Insulation Panel, 1.75 in. x 4 ft. x 8 ft.
Regular price $49.81Orders start at $399 — combine any items to reach the minimum. Learn more
Carlisle SynTec SecurShield Grade-II 20 psi Polyiso Roof Insulation Panel, 1.75 in. x 4 ft. x 8 ft.
This is a 1.75 in. thick, 4 ft. x 8 ft. SecurShield Grade-II (20 psi) rigid polyisocyanurate roof insulation panel from Carlisle SynTec, sold as one piece. The closed-cell polyiso core is bonded to premium coated-glass facers with ReadyFlash Technology for controlled adhesive flash-off. Pair it with Carlisle SynTec single-ply membranes and compatible adhesives.
Key Features:
- ReadyFlash Technology: A dark coated-glass facer on one side and a light facer on the other let contractors speed up or slow down membrane adhesive flash-off by choosing the application side.
- 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.
- Premium Coated-Glass Facers: Premium performance coated-glass facers improve fire resistance, moisture resistance and dimensional stability.
- Wind Uplift Performance: The superior facer-to-foam bond enhances wind-uplift performance.
- 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, 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 1.75 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, 1.75 in. thick |
| Thickness | 1.75 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 | 16.44 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 (such as TPO, EPDM and PVC) 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 1.75 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 membrane 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 mechanically attached or adhered 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
SecurShield polyiso offers the highest R-value per inch of commonly available roof insulation, so this 1.75 in. panel is a good fit when taper and thickness budget are tight. Use the dark ReadyFlash facer toward the membrane on cool or humid days to accelerate adhesive flash-off, and the light facer when you need more open time. For fully adhered assemblies, stage boards with staggered joints and follow the membrane manufacturer's attachment pattern for the required wind-uplift rating.
Follow OSHA roof-work fall-protection requirements and install per Carlisle's specifications and local building code.
Order the Carlisle SynTec SecurShield 1.75 in. 4x8 Grade-II polyiso panel today for high-R-value roof insulation.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
