Featuring a combination of fire resistance, strength and dimensional stability, DensDeck roof boards enhance the performance of all roofing assemblies and are widely respected by leading roofing system manufacturers and consultants.
DensDeck roof board, with its fiberglass mats and non-combustible gypsum core* - is resistant to mold growth, and has scored a 10, the highest level of performance for mold resistance under the ASTM D 3273 test method.
With billions of square feet installed over three decades in a complete range of roofing systems and climate extremes, DensDeck® Roof Boards have proven their toughness and versatility. DensDeck® panels continue to earn industry accolades due to their ability to deliver high quality performance, every time.
For recommendations and limitations of use for DensDeck Roof Boards, download the technical brochure. Georgia-Pacific Gypsum does not warrant or provide specifications for any specific roofing assembly or any component other than DensDeck Roof Boards. Consult with the appropriate system manufacturer or design authority for system specifications and instructions.
* As described and tested in accordance with ASTM E 136 (CAN/ULC S-104).
The USGBC logo and LEED are a trademarks of the U.S. Green Building Council and are used with permission.
Versatile fiberglass mat roof board. Enhanced surface treatment allows uniform spreading of adhesives for a strong, consistent bond. DensDeck Prime is an ideal cover board; or underlayment for spray foam applications, for photovoltaic, vegetative or cool roofing systems.
Durable, moisture- and mold-resistant fiberglass mat roof boards for a wide variety of roofing systems. Use for new and re-roofing applications. DensDeck provides a superior thermal barrier and is widely used in single ply, mechanically-attached systems.
What's brewing in your climate zone? See the specific benefits DensDeck® Prime Roof Board provides for the challenges of wind, fire, snow and hail in your state or province.
Click to watch a quick video demonstration showing the ease of cutting and scoring DensDeck, applying adhesives and installing it, compared side-by-side with gypsum fiberboard materials. (2:51)
Selecting DensDeck® Prime Roof Boards prove to be a good decision in the 200,000 square foot re-roofing of Detroit's Cobo Center. Hear the contractor's story first hand.
Learn more about third party test results that showed DensDeck® Prime Roof Boards offer superior protection against everyday punctures compared to HD ISO or no cover board.
Learn more about third party test results that showed DensDeck® Prime Roof Boards protect thermoplastic roofing membranes against hail damage better than HD ISO cover boards.
DensDeck® Prime roof boards can help dampen unwanted outside noise. In new construction or in retrofit applications, DensDeck® enables an innovative solution for exterior sound remediation.