DensDeck® StormX™

  • Classified by FM Global for VSH (very severe hail), the tough new hail standard in FM Property Loss Prevention Data Sheet 1-34
  • Your go-to roof risk mitigator for buildings in the very severe hail areas of the central United States and anywhere severe hail (2 inches or larger) is a concern
  • The roof board’s proprietary engineering enables it to better resist impact from hail and wind-borne debris
DensDeck® StormX™

Since its invention in 1987, DensDeck® Roof Boards continue to set new performance standards for the roof assembly. From DensDeck® Roof Board to DensDeck® Prime Roof Boards with EONIC™ Technology, a dedication to advancement continues to bring new innovations to a product line with a noble history. DensDeck® StormX™ Prime Roof Board builds on that legacy by innovating on impact resistance and strength.

As weather events intensify across the United States, our building roof system design approach and material installation must adapt too. DensDeck® StormX™ Roof Boards help prepare commercial rooftops to hold tough under today’s severe weather conditions. Specify DensDeck® StormX™ cover boards in any situation where you need enhanced impact resistance, but always specify it in very severe hail zones.

Upgrades Hail Resistance
Strengthens Puncture Resistance
Maintains Water Resistance
Physical Properties
Thickness, nominal

5/8( (15.9 mm) ± 1/32( (.8 mm)

Width, standard

* (1219 mm) ± 1/8( (3 mm)

Length, standard

* (1219 mm) and  8* (2438 mm) ± 1/4( (6.4 mm)

Weight, nominal, lbs./sq. ft. (Kg/m2)

3.0 (14.6)

R Value4, ft2•°F•hr/BTU (m2•K/W)

.67 * Tested in accordance with ASTM E661

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