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Johns Manville FESCO Perlite-Based Roof Cover Board, 1.5 in. x 4 ft x 4 ft Panel
Regular price $28.50Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville FESCO Perlite-Based Roof Cover Board, 1.5 in. x 4 ft x 4 ft Panel
The Johns Manville FESCO perlite-based cover board is a 1.5 in. thick, 4 ft x 4 ft board used as a protective cover layer over roof insulation beneath the membrane. Each order unit is one panel covering 16 sq ft. It pairs with JM commercial roofing insulation and single-ply membrane systems.
Key Features:
- Perlite-based core: FESCO is a perlite-based cover board designed to protect roof insulation under the roofing membrane.
- 1.5 in. thickness: This panel is 1.5 in. thick, providing added cover over the insulation layer.
- Code-listed: UL Classified, FM Approved, and Miami-Dade County Approved, meeting ASTM C728, Type 1.
- 16 sq ft per panel: Each 4 ft x 4 ft panel covers 16 square feet of roof area.
- Manageable weight: The panel weighs approximately 23.8 lb for easier handling on the roof.
- JM system component: Designed as an integral component of Johns Manville commercial roof systems.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Manufacturer model | 90000700 |
| Sell unit | 1 panel, 1.5 in. x 4 ft x 4 ft |
| Product line | FESCO Perlite-Based Cover Board |
| Material | Perlite-based cover board |
| Dimensions | 4 ft x 4 ft, 1.5 in. thick |
| Thickness | 1.5 in. |
| Coverage per unit | 16 sq ft per panel |
| Weight | 23.8 lb per panel |
| Approvals | UL Classified; FM Approved; Miami-Dade County Approved; ASTM C728, Type 1 |
| Intended use | Commercial low-slope roofing cover board over insulation |
| Algae resistance | No |
Coverage & How Much You Need:
One 4 ft x 4 ft panel covers 16 square feet. Divide total roof area by 16 to estimate panel count, allowing for cut waste around edges and penetrations.
Fit and Compatibility:
FESCO cover board is installed over JM roof insulation beneath JM single-ply or built-up membrane systems. Fasteners and plates or approved adhesives are sold separately; follow the specific JM system assembly.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One 1.5 in. x 4 ft x 4 ft FESCO perlite-based cover board panel, sold per piece.
Q: How many panels do I need?
A: Each panel covers 16 sq ft, so divide your roof area by 16 and add for cuts and waste.
Q: How is it installed?
A: It is set over roof insulation and attached with fasteners/plates or adhesive per the specified JM roof system assembly.
Q: Is it fire rated?
A: It is UL Classified and FM Approved and conforms to ASTM C728, Type 1; use it within a listed JM roof assembly.
Q: Can it be used under any membrane?
A: It is intended for use in compatible Johns Manville roofing systems; confirm the assembly with the project specification.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Perlite cover boards like FESCO are a proven, economical choice for protecting polyiso insulation in low-slope roof systems and are widely accepted in UL and FM assemblies. Stagger board joints and confirm the specified attachment pattern for your wind zone. Choose a thicker board like this 1.5 in. panel when the assembly calls for added cover height or rigidity.
Cover board panels are heavy and brittle at corners; lift with proper technique and keep boards dry and flat until installed.
Order the Johns Manville FESCO 1.5 in. perlite cover board for your next commercial roofing job.
Product Documents:
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