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U.S. Gypsum SecuRock 1/2 in. x 4 ft. x 8 ft. Cement Board
Regular price $55.55Orders start at $399 — combine any items to reach the minimum. Learn more
U.S. Gypsum SecuRock 1/2 in. x 4 ft. x 8 ft. Cement Board
This is a U.S. Gypsum SecuRock 1/2 in. cement board panel in a 4 ft. x 8 ft. sheet, sold per piece. It provides a durable, fire-resistant substrate for roofing assemblies and is UL Classified as Type DCB. Pair it with compatible USG roofing system components per the manufacturer's assembly details.
Key Features:
- UL Classified: UL Classified as Type DCB for use in listed roofing assemblies.
- FM Approved: FM Approved in addition to UL classification.
- Fire performance: Meets ASTM E84 (CAN/ULC-S102) and ASTM E136-12 (CAN/ULC-S114) fire test standards.
- Roofing standard: Complies with UL790 (CAN/ULC-S107) and ASTM C1325.
- Full sheet format: Ships as a 1/2 in. thick, 4 ft. x 8 ft. board sold per piece.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | U.S. Gypsum |
| Manufacturer model | 170540030 |
| Sell unit | 1 board, 1/2 in. x 4 ft. x 8 ft. |
| Product line | SecuRock |
| Material | Cement board |
| Dimensions | 4 ft. x 8 ft., 1/2 in. thick |
| Classification | UL Classified (Type DCB) |
| Approvals | UL Classified (Type DCB); ASTM E84 (CAN/ULC-S102); ASTM E136-12 (CAN/ULC-S114); UL790 (CAN/ULC-S107); FM Approved; ASTM C1325 |
| Weight | 1 lb (item weight as listed) |
| Intended use | Roofing insulation / substrate board |
Coverage & How Much You Need:
One sheet covers 32 sq ft (4 ft. x 8 ft.). Calculate board count by dividing the roof area by 32 sq ft and adding waste for cuts.
Fit and Compatibility:
Designed for use in USG SecuRock roofing assemblies; install with compatible fasteners, adhesives and membranes per the assembly listing. Verify the specific UL/FM assembly requirements before substitution.
Frequently Asked Questions (FAQ):
Q: What is included with each order?
A: One 1/2 in. x 4 ft. x 8 ft. SecuRock cement board panel, sold as a single piece.
Q: How much area does one sheet cover?
A: A 4 ft. x 8 ft. sheet covers 32 square feet before allowing for cuts and waste.
Q: Is this board fire rated?
A: Yes, it is UL Classified Type DCB and meets ASTM E84 and ASTM E136 fire test standards.
Q: Is it FM approved?
A: Yes, the board is listed as FM Approved along with UL classification.
Q: Can it be used in any roofing assembly?
A: Use it only in assemblies where a UL Type DCB board is specified, following the manufacturer's instructions and local code.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
SecuRock cement board is chosen when a listed assembly calls for a non-combustible, cement-based roof board rather than glass-mat gypsum. Confirm the UL or FM assembly you are building to accepts Type DCB board and the listed fastening pattern. Handle sheets flat to avoid edge damage and cut with a carbide scoring tool or circular saw with dust control.
Cutting cement board generates silica dust; use dust control and wear eye, hearing and respiratory protection per OSHA silica rules.
Order U.S. Gypsum SecuRock 1/2 in. cement board for your next listed roofing assembly.
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