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Elevate 4 in. 4 ft. x 4 ft. ISO 95+ GL Grade-II 20 psi Polyiso Roof Insulation Board
Regular price $38.27Orders start at $399 — combine any items to reach the minimum. Learn more
Elevate 4 in. 4 ft. x 4 ft. ISO 95+ GL Grade-II 20 psi Polyiso Roof Insulation Board
This Elevate ISO 95+ GL Grade-II polyisocyanurate roof insulation board is 4 in. thick and measures 4 ft. x 4 ft., rated at 20 psi compressive strength. Each piece is one board covering 16 sq ft. It is used as roof insulation in approved low-slope membrane roof assemblies.
Key Features:
- 4-inch thickness: Provides 4 in. of polyiso insulation per board.
- 20 psi Grade-II: GL Grade-II with 20 psi minimum compressive strength as listed.
- FM Approved: Listed as FM Approved among its applicable standards.
- Miami-Dade approved: Miami Dade County Approved is listed for this product.
- UL Classified: UL Classified and carrying the PIMA Quality Mark per the listed standards.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Elevate |
| Manufacturer model | W841114004 |
| Sell unit | 1 board, 4 ft. x 4 ft., 4 in. thick (PC) |
| Product line | Elevate ISO 95+ GL |
| Profile / style | Polyisocyanurate roof insulation board |
| Color | Not stated |
| Dimensions | 4 ft. x 4 ft., 4 in. thick |
| Coverage per unit | 16 sq ft per board |
| Material | Polyisocyanurate (polyiso) foam |
| Compressive strength | 20 psi (Grade-II) |
| Applicable standards | ASTM C1289, Type II, Class 1; CAN/ULC-S704, Type 1, Class 3; CCMC 13274-L; FM Approved; ISO 9001 Registered Facility; LEED; Miami Dade County Approved; PIMA Quality Mark; UL Classified |
| Weight | 15 lb per board |
| Intended use | Roof insulation in low-slope membrane roof assemblies |
Coverage & How Much You Need:
One 4 ft. x 4 ft. board covers 16 sq ft. Plan roughly 6.25 boards per 100 sq ft of roof area, plus material for cut waste and layer transitions.
Fit and Compatibility:
Part of the Elevate ISO 95+ polyiso roof insulation line; use under compatible Elevate or other approved membrane systems with the specified cover boards, adhesives and fastening plates as the assembly requires. Adhesives, plates and membrane are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One 4 in. thick, 4 ft. x 4 ft. Elevate ISO 95+ GL Grade-II polyiso insulation board.
Q: How much area does one board cover?
A: One board covers 16 sq ft of roof area.
Q: What compressive strength does it have?
A: It is a Grade-II board with 20 psi compressive strength as listed.
Q: Which approvals apply?
A: Listed standards include FM Approved, Miami Dade County Approved, UL Classified, ASTM C1289 Type II Class 1 and CAN/ULC-S704, among others.
Q: How heavy is one board?
A: The listed item weight is 15 lb per board.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Polyiso is the standard insulation choice for low-slope commercial roofs, and the 20 psi Grade-II rating suits many standard assemblies, though higher-traffic or heavy-equipment areas may call for higher compressive strength. For a 4 in. total thickness, consider layering thinner boards in staggered joints rather than one thick board to improve thermal performance and stability. Confirm board attachment—adhesive or mechanical fastening—against the roof system specification and local code.
Handle boards carefully to avoid damaging edges and corners, and confirm proper wind-uplift attachment per the project specification before installation.
Order the Elevate 4 in. ISO 95+ GL Grade-II 20 psi polyiso roof insulation board for your next low-slope roof project.
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