Skip to content
Johns Manville SECUROCK Gypsum-Fiber Roof Cover Board, 1/4 in. x 4 ft x 8 ft Panel
Regular price $33.69Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville SECUROCK Gypsum-Fiber Roof Cover Board, 1/4 in. x 4 ft x 8 ft Panel
This is a 1/4 in. thick, 4 ft x 8 ft panel of Johns Manville SECUROCK Gypsum-Fiber Roof Cover Board, sold per piece. Each 32 sq ft panel protects insulation and provides a substrate for single-ply and other roof membranes. Pair with JM roofing membranes, fasteners and plates for a complete low-slope roof assembly.
Key Features:
- Gypsum-fiber core: SECUROCK is a gypsum-fiber roof board designed for use as a roof cover board.
- Standard panel size: 4 ft x 8 ft panel covers 32 sq ft per piece.
- Thin 1/4 in. profile: 1/4 in. thickness adds cover board protection with minimal build-up height.
- FM approved: Listed as FM Approved.
- Miami-Dade approved: Listed as Miami Dade County Approved.
- UL classified: Listed as UL Classified.
- LEED listed: LEED is listed among applicable standards.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Manufacturer model | 70000793 |
| Sell unit | 1 panel, 4 ft x 8 ft (32 sq ft), 1/4 in. thick |
| Product line | SECUROCK Gypsum-Fiber Roof Board |
| Profile / style | Roof cover board |
| Dimensions | 4 ft x 8 ft, 1/4 in. thick |
| Coverage per unit | 32 sq ft per panel |
| Material | Gypsum-fiber roof board |
| Thickness | 1/4 in. |
| Approvals | FM Approved; Miami Dade County Approved; UL Classified; LEED |
| Intended use | Roof cover board over insulation beneath single-ply and other roof membranes |
| Weight | 54 lb per panel |
Coverage & How Much You Need:
Each 4 ft x 8 ft panel covers 32 sq ft. Divide the roof area by 32 to get the panel count, allowing for board layout and edge conditions per the membrane manufacturer's requirements.
Fit and Compatibility:
Designed as a cover board component in low-slope roofing assemblies under Johns Manville single-ply (TPO, PVC, EPDM) and other roof membranes. Membranes, adhesives, fasteners and plates are sold separately; follow the JM data sheet for attachment requirements.
Frequently Asked Questions (FAQ):
Q: What size is the panel?
A: Each panel is 4 ft x 8 ft and 1/4 in. thick, covering 32 sq ft.
Q: How many panels do I need?
A: Divide your roof area in square feet by 32 to estimate panel count.
Q: What approvals does it carry?
A: It is listed as FM Approved, Miami Dade County Approved, UL Classified and LEED listed.
Q: How much does a panel weigh?
A: Approximately 54 lb per panel.
Q: What is it used for?
A: It is a gypsum-fiber cover board installed over roof insulation to protect it and provide a substrate for the roof membrane.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
A 1/4 in. cover board is a common choice when parapet height or assembly thickness is constrained; step up to thicker boards when higher impact and hail resistance is specified. Install with the fastener plates and spacing called out in the membrane manufacturer's specifications, and store panels dry and flat on the jobsite.
Gypsum-fiber panels are heavy and edges can be sharp; use proper lifting technique, cut with appropriate tools and follow site safety practices.
Order Johns Manville SECUROCK 1/4 in. Gypsum-Fiber Roof Cover Board to protect your roofing assembly.
Product Documents:
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
