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Elevate ISO 95+ GL Grade-II Polyiso Roof Insulation Board, 1.25 in. x 4 ft. x 4 ft.
Regular price $13.35Orders start at $399 — combine any items to reach the minimum. Learn more
Elevate ISO 95+ GL Grade-II Polyiso Roof Insulation Board, 1.25 in. x 4 ft. x 4 ft.
This Elevate ISO 95+ GL Grade-II polyiso roof insulation board is 1.25 in. thick and measures 4 ft. x 4 ft., with a closed-cell polyiso foam core laminated to glass-reinforced mat facers. Sold as one piece, it is ideal for thin R-value layers and fills in low-slope commercial roof assemblies.
Key Features:
- High R-value: Polyisocyanurate foam delivers the highest R-value per inch of common insulation systems.
- Grade-II 20 psi: Grade-II (20 psi) polyiso board rated for commercial roof assemblies.
- Glass mat facers: Closed-cell polyiso core is laminated to a glass-reinforced mat facer on both major surfaces.
- Broad approvals: FM Approved, UL Classified, Miami-Dade County Approved and PIMA Quality Mark certified.
- Standards listed: Meets ASTM C1289, Type II, Class 1 and CAN/ULC-S704, Type 1, Class 3.
- Compact sheet: 4 ft. x 4 ft. sheet is easy to handle, stage and cut on rooftops.
- LEED friendly: LEED-compatible product from an ISO 9001 registered manufacturing facility.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Elevate |
| Manufacturer model | W841111254 |
| Sell unit | 1 board, 1.25 in. x 4 ft. x 4 ft. |
| Product line | ISO 95+ GL (ISOGARD GL) |
| Profile / style | Flat insulation board |
| Color | Gray |
| Dimensions | 4 ft x 4 ft, 1.25 in. thick |
| Coverage per unit | 16 sq ft per board |
| Material | Polyisocyanurate foam with glass-reinforced mat facers |
| Compressive strength | 20 psi (Grade-II) |
| Thickness | 1.25 in. |
| Standards / approvals | ASTM C1289 Type II Class 1; CAN/ULC-S704 Type 1 Class 3; CCMC 13274-L; FM Approved; Miami-Dade Approved; UL Classified; PIMA Quality Mark; LEED; ISO 9001 facility |
| Weight | 6 lb per board |
| Intended use | Thermal insulation for commercial low-slope roofing |
Coverage & How Much You Need:
Each 4 ft. x 4 ft. board covers 16 sq ft of roof area. Divide total roof square footage by 16 to size the order, allowing for cuts and waste.
Fit and Compatibility:
Suited to thin fill layers under Elevate single-ply and modified bitumen membrane systems. Thicker boards, tapered panels and cover boards are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included with my order?
A: One 1.25 in. x 4 ft. x 4 ft. Grade-II (20 psi) polyiso insulation board, sold per piece.
Q: How many boards do I need?
A: Each 4 ft. x 4 ft. board covers 16 sq ft, so divide your roof area by 16 and add for waste.
Q: What is a 1.25 in. board used for?
A: Thin boards like this are commonly used as fill layers, top layers under cover boards, or where assembly height is limited.
Q: What facers does the board have?
A: A glass-reinforced mat facer is laminated to both major surfaces of the closed-cell polyiso core.
Q: Is the blowing agent ozone-safe?
A: Yes, ISOGARD GL uses an HCFC-free, EPA-accepted blowing agent that does not deplete the ozone layer.
Q: Which certifications apply?
A: The board is FM Approved, UL Classified, Miami-Dade County Approved, CCMC listed and carries the PIMA Quality Mark.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Keep 1.25 in. boards on hand for thin R-value increments, transition fills and layered assemblies where a thicker single board would create a ridge. Confirm the fastening pattern and board sequence with the membrane system's approval. Follow with an approved cover board where the system requires one.
Follow rooftop fall-protection and fire-safety requirements, and keep boards secured against wind during staging.
Order the Elevate ISO 95+ GL 1.25 in. polyiso board today for precise layered roof R-value.
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