DensDeck 5/8" Roof Board (4' x 8')

Glass-mat faced gypsum roof board engineered for commercial roofing systems. Acts as a fire and thermal barrier while enhancing durability and foot-traffic resistance over the deck.

Key Features:

• Multi-Purpose Protection: Functions as fire barrier, thermal barrier, coverboard, and recovery board
• Durable Construction: Fiberglass mats bonded to a high-density gypsum core for superior strength
• Improved Foot-Traffic Resistance: Stiffens the deck and spans flutes to reduce damage
• Moisture and Damage Resistant: Withstands deterioration, delamination, and job-site wear better than paper-faced gypsum, fiberboard, and perlite substrates
• Code Compliance: Meets ASTM C1177; UL 790/1256; FM Class 1; CE; Florida Building Code; Miami-Dade approvals

Please check the Product Data Sheet Here

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What are the panel dimensions and thickness?
A: Each board measures 4 ft x 8 ft with a 5/8 in (15.9 mm) thickness.

Q: Where is DensDeck used in a roofing system?
A: Commonly used as a coverboard or recovery board over insulation, and as a fire or thermal barrier in various commercial membrane roof assemblies.

Q: What is the core and facing material?
A: High-density gypsum core with fiberglass mats on both faces, mechanically bonded.

Q: Is it approved by major codes and agencies?
A: Yes—ASTM C1177, CE Certified, UL 790/1256 classifications, FM Class 1 approvals, Florida Building Code, and Miami-Dade County approvals.

Q: How does it compare to other substrates?
A: It resists deterioration, delamination, and job-site damage more effectively than paper-faced gypsum, fiberboard, and perlite insulation substrates.

A Sleek, Structural Layer of Confidence

DensDeck’s refined, glass-mat surface brings a quiet strength to the roofscape, setting the tone for performance-driven design. The high-density gypsum core and fiberglass facings create a crisp, stable plane that elevates membrane finishes. Pair it with clean-lined metal edging and a monochrome roof palette for a modern, architectural silhouette. It’s the discreet luxury that ensures beauty is backed by enduring protection.

Choose DensDeck for a stronger, code-compliant roof assembly that stands up to foot traffic and job‑site wear.

Warranty

Installation