USG Securock Gypsum-Fiber Roof Board 3/8" (4' x 4')

High-performance gypsum-fiber cover board for low-slope single-ply roofing systems. Its homogenous, fiber-reinforced core delivers strength, water resistance, low absorption, and excellent adhesion with no risk of facer delamination.

Key Features:

• Homogenous Gypsum-Fiber Core: Strong, water-resistant composition throughout for durable performance
• Superior Adhesion: Low absorption promotes exceptional bond in adhered roofing systems
• High Wind Uplift Ratings: No facer to delaminate, enhancing system reliability
• Sustainable Design: Made from 97% recycled material; supports LEED objectives
• Code-Compliant: Meets ASTM C1278, ASTM E84 (CAN/ULC-S102) and FM Class 1 (FM 4450/4470)

Please check the Product Data Sheet Here

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What are the board dimensions and thickness?
A: This variant is 4 ft x 4 ft with a 3/8 in thickness.

Q: Is it suitable for adhered single-ply systems?
A: Yes, the board's low absorption and fiber-reinforced core provide an exceptional bond in adhered systems.

Q: Does it contain a facer that can delaminate?
A: No, its homogenous composition eliminates facer delamination risk.

Q: What sustainability benefits does it offer?
A: It is manufactured from approximately 97% recycled material and can contribute to LEED credits.

Q: Which standards does it meet?
A: ASTM C1278, ASTM E84 (CAN/ULC-S102), FM Class 1 (FM 4450 and FM 4470).

A Refined, Resilient Foundation for Modern Roofscapes

This gypsum‑fiber board introduces a quiet elegance to roofing—streamlined, uniform, and purposefully resilient. Its homogenous core is the hero, delivering strength and moisture resistance that keep the envelope crisp and confident. Pair it with a light-colored single‑ply membrane to create a clean, architectural silhouette with enduring performance. Consider it an essential layer in crafting a polished, luxury roof system that’s as smart as it is beautiful.

Upgrade your roof system with the Securock gypsum-fiber board for dependable adhesion, wind uplift performance, and sustainable strength.