DensDeck® Roof Board is designed to address persistent challenges inherent in commercial roofing assemblies, including fire resistance, durability and dimensional stability when installed in a properly designed roof assembly. With a non-combustible gypsum core, it has 0 flame spread and 0 smoke developed when tested in accordance with ASTM E84 and CAN/ULC-S102. It is also UL classified for resistance to both external and internal fire sources per ANSI/UL 790 and ANSI/UL1256.

Being a strong rigid board, it can enhance a roof’s ability to resist wind uplift forces that can cause fastener pull-through. DensDeck® resists impact from repeated events like maintenance foot traffic, dropped tools, and flying debris. DensDeck® can serve as a thermal barrier, installed below the insulation to protect against internal fires. In most assemblies it will be used as an insulation overlayment (membrane underlayment) or cover board. In other assemblies it will serve both of these roles in the same system.

Features

• Unrivaled Durability: Fiberglass mats bonded to a dense gypsum core provide wind uplift resistance, fire protection, and superior load-bearing capabilities.
• Mold Resistant: Achieves the highest possible score of 10 on the ASTM D3273 mold test.1
• Enhanced Stability: Delivers resistance to job-site damage, deterioration, and ensures long-lasting performance across various roofing environments.
• Wide Compatibility: Compatible with built-up, modified bitumen, single-ply, metal systems, tile, wood shingles, shakes, spray foam, and more roofing applications.