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Johns Manville FESCO 2 in. x 4 ft. x 4 ft. Perlite Roof Cover Board, Sold per Piece
Regular price $34.37Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville FESCO 2 in. x 4 ft. x 4 ft. Perlite Roof Cover Board, Sold per Piece
This is a single 2 in. thick, 4 ft x 4 ft Johns Manville FESCO perlite-based roof cover board, sold per piece at 16 sq ft of coverage per board. FESCO gives a rigid, code-listed substrate under low-slope single-ply and other roofing membranes. It meets ASTM C728 Type 1 and is UL Classified, FM Approved and Miami-Dade County Approved.
Key Features:
- Perlite cover board: Rigid perlite-based cover board per ASTM C728, Type 1.
- 16 sq ft per board: Each 4 ft x 4 ft board covers 16 sq ft.
- 2 in. thickness: Board measures 2 in. thick.
- Code-listed: UL Classified, FM Approved and Miami-Dade County Approved.
- Sold per piece: Order exact piece counts for small jobs and repairs.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Manufacturer model | 90000702 |
| Sell unit | 1 board, 4 ft x 4 ft x 2 in. |
| Product line | FESCO perlite-based cover board |
| Material | Perlite-based cover board |
| Dimensions | 4 ft x 4 ft, 2 in. thick |
| Thickness | 2 in. |
| Coverage per unit | 16 sq ft per board |
| Pack quantity | 1 piece |
| Approvals | UL Classified; FM Approved; Miami Dade County Approved; ASTM C728, Type 1 |
| Weight | 31.4 lb per board (gross) |
| Intended use | Roof cover board under low-slope commercial roofing membranes |
Coverage & How Much You Need:
One 4 ft x 4 ft board covers 16 sq ft; divide the roof area by 16 sq ft per board and add a cutting allowance.
Fit and Compatibility:
Installed under Johns Manville single-ply and other low-slope roofing systems as a cover board layer per the specified system. Attachment adhesive and fasteners are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 4 ft x 4 ft board, 2 in. thick, covering 16 sq ft.
Q: How many boards do I need?
A: Divide the roof area by 16 sq ft per board and add allowance for cuts and perimeter fitting.
Q: Why choose the 4 ft x 4 ft size?
A: Smaller panels are easier to hand-carry onto the roof and waste less material on small jobs.
Q: Is it code approved?
A: Yes: UL Classified, FM Approved, Miami-Dade County Approved, meeting ASTM C728 Type 1.
Q: How is it installed?
A: Per the specified membrane system, with compatible adhesive or fasteners sold separately.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
The 2 in. thickness adds meaningful height and stiffness where the system calls for a thick cover board layer. Because a 2 in. 4x4 board weighs over 30 lb, plan for two-person handling on ladders and roof loading. Stagger joints between boards for a stable membrane substrate.
Wear gloves when handling cut board edges and lift heavy panels with proper technique or two people.
Order the Johns Manville FESCO 2 in. x 4 ft x 4 ft perlite cover board by the piece today.
Product Documents:
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