Introducing DensDeck® Prime
Roof Board with EONIC™ Technology

In keeping with our tradition of market-driven innovation, Georgia-Pacific Gypsum has improved DensDeck® Prime Roof Boards with EONIC™ Technology, a patent protected enhancement. Incorporating EONIC™ Technology has doubled DensDeck Prime's resistance to moisture making it the only roof board with manufacturing specifications that include 5% total water absorption resistance by weight and 1 gram surface water absorption performance on both sides of the board1. But that's just the beginning of the story.

Who Absorbed More?
76%
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132%
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½" Roof Boards
alternative coated glass mat gypsum
gypsum
fiber

Total Water
Absorption Test

In independent test2 results of ½” roof board, DensDeck® Prime Roof Board excelled:

  • Alternative coated glass mat gypsum absorbed 76% more water
  • Gypsum fiber absorbed 132% more water

Surface Water Absorption Test

In independent test2 results of ½" roof boards compared to DensDeck® Prime Roof Board:

  • Gypsum fiber absorbed 2.3x more water
  • Alternative coated glass mat gypsum absorbed 4.0x more water
Who Performed Better?
2.3x
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4.0x
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½" Roof Boards
gypsum
fiber
alternative coated glass mat gypsum
DensDeck® Prime Retained More Strength
½” ROOF
BOARDS
INITIAL
57%
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52%
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alternative coated glass mat gypsum
gypsum
fiber
WET*
87%
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267%
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alternative coated glass mat gypsum
gypsum
fiber
* After standard 2 hour soak test.

Flexural Strength Before and After Soak Test

When exposed to water all roof boards lose strength, including flexural strength, but to varying degrees. In independent test3 results of 1/2" roof boards:

  • DensDeck Prime tested 52% stronger than gypsum fiber and 57% stronger than alternative coated glass mat when dry
  • After standard, 2-hour soak, DensDeck Prime tested 267% stronger than gypsum fiber and 87% stronger than alternative coated glass mat
  • DensDeck Prime tested stronger after the 2-hour soak than both gypsum fiber and alternative coated glass mat tested before exposure to moisture

Vertical Pull Strength

In independent test4 results of ½" roof boards compared to DensDeck® Prime Roof Board:

  • Versus gypsum fiber: 74% stronger on the face, 14% on the back
  • Versus alternative coated glass mat: 2.5x stronger on the face, 7x stronger on the back
Independent Vertical Pull Testing
of DensDeck® Prime Roof Boards
DensDeck® Prime Roof Boards vs Gypsum Fiber
74%Strongeron the face
14%Strongeron the back
DensDeck® Prime Roof Boards vs Alternative Coated Glass-Mat Gypsum
2.5xStrongeron the face
7xStrongeron the back

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