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Carlisle SynTec SecurShield Grade-II 20 psi Polyiso Roof Insulation Panel, 4 in. x 4 ft. x 4 ft.
Regular price $49.94Orders start at $399 — combine any items to reach the minimum. Learn more
Carlisle SynTec SecurShield Grade-II 20 psi Polyiso Roof Insulation Panel, 4 in. x 4 ft. x 4 ft.
This is a 4 in. thick, 4 ft. x 4 ft. Carlisle SynTec SecurShield Grade-II (20 psi) rigid polyisocyanurate roof insulation panel, sold as one piece. The closed-cell polyiso core is bonded to premium coated-glass facers with ReadyFlash Technology for controlled adhesive flash-off. It suits high-R-value commercial roof assemblies under Carlisle SynTec single-ply membranes.
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.
- Thick Single-Layer Option: The 4 in. thickness provides substantial thermal value in a single board layer.
- 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 4 ft x 4 in. |
| Product line | SecurShield Polyiso with ReadyFlash Technology |
| Material | Closed-cell polyisocyanurate foam core with coated-glass facers (CGF) |
| Dimensions | 4 ft x 4 ft, 4 in. thick |
| Thickness | 4 in |
| Grade / compressive strength | Grade-II (20 psi) |
| Coverage per unit | 16 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 | Listed item weight 1 lb (appears to be a placeholder; see notes) |
| 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 4 ft. panel covers 16 sq ft of roof deck. Divide total roof area by 16 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 4 in. thick, 4 ft. x 4 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 16 sq ft, so divide your roof area by 16 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: Why choose a 4 ft. x 4 ft. panel?
A: The smaller footprint is easier to handle and stage on the roof, particularly for thick boards and work around penetrations and tight areas.
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
A 4 in. SecurShield board delivers significant thermal resistance in one layer, which can reduce labor compared with stacking multiple thinner boards, though thick single layers are more subject to fastener plate telegraphing on thin membranes. The 4 ft. x 4 ft. size is easier to carry and stage around rooftop obstructions. Orient the dark ReadyFlash facer toward the membrane to speed adhesive flash-off in cool conditions, and always follow Carlisle's attachment specifications for wind-uplift requirements.
Handle thick rigid foam boards carefully on windy rooftops and follow OSHA fall-protection requirements and local building code.
Order the Carlisle SynTec SecurShield 4 in. 4x4 Grade-II polyiso panel today for maximum R-value roof insulation.
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