DensDeck® StormX® Prime Roof Board
- DensDeck® StormX® Prime Roof Board, can be used as a substrate board, thermal barrier, recovery board, and cover board in commercial roofing applications.
- Produced with coated glass mat facers and EONIC Technology for excellent performance in adhered applications and enhanced strength.
- The first of its kind to be FM classified for VSH in a single ply assembly, when using an adhered standard 60 mil TPO/PVC bare back membrane.
- Enhanced strength and impact resistance helps protect against extreme hail, wind, uplift, punctures and fire.
- Easily applied to most substrates via roller or spray.
Why Choose DensDeck® StormX® Prime Roof Board?
Because it’s designed for extreme conditions, with a Very Severe Hail (VSH) rating and proven performance in single-layer systems, it’s the ideal choice when the project requires maximum impact resistance, severe weather, and high safety standards.
Product Detail
DensDeck® StormX® Prime Roof Board provides a higher level of performance and is recommended for mechanically fastened, adhered and partially adhered roofing systems. This Roof Board is FM classified for Very Severe Hail (VSH) in approved single ply membrane assemblies.* This gypsum cover board was the first of its kind to pass FM VSH in a single ply assembly, when using an adhered standard 60 mil TPO bareback membrane. DensDeck® StormX® Prime Roof Board is approved in more single ply VSH systems than all over cover boards combined and is included in thousands of approved systems that can be found in FM Roof Nav.
FEATURES AND BENEFITS
- Extreme Durability: Approved for FM Very Severe Hail (VSH) classification, providing unmatched resistance against impact.
- Versatility: Ideal for multiple roofing systems such as single-ply, modified asphalt, metal systems, and more.
- Enhanced Installation: Works seamlessly with adhered, self-adhered, “peel & stick,” hot mopped, and torch-applied systems.
- Proven Performance: The first gypsum cover board to achieve FM VSH classification under a single-ply membrane and under a 60 mil TPO membrane.
Product Specifications
PERFORMANCE ATTRIBUTES
| R Value | °F•ft2•hr/BTU (m2•K/W): .67 |
| ASTM Type | ASTM C473; ASTM E661; ASTM E96; ASTM C518; ASTM C1177; ASTM C473;ASTM D3273 |
| Fire Rating | Type X; ASTM D3273 |
| Mold Resistance | (10/10); ASTM D3273 |
| Flexural Strength, parallel, lbf. min. (N) | ≥=200 (888) |
| Flute Spanability2 | 18″ (457mm) |
| Permeance, Perms (ng/Pa•S•m2 ) | >17 (>970) |
| Linear Variation with Change in Temp., in/in/°F (mm/mm/°C) | 11.7×10–6 (459333×10–6) |
| Linear Variation with Change in Moisture | 6.25 x 106 |
| Water Absorption, % max3 | 5 |
| Compressive Strength, psi nominal | 1800 |
| Surface Water Absorption, grams, nominal | 1.0 |
PHYSICAL PROPERTIES
| Length | standard: 4′ (1219 mm) and 8′ (2438 mm) ± 1/4( (6.4 mm) |
| Width | standard: 4′ (1219 mm) ± 1/8″ (3 mm) |
| Thickness | nominal: 5/8″ (15.9 mm) ± 1/32″ (.8 mm) |
| Weight | nominal: 3.0 (14.6) |
CERTIFICATIONS
Certifications may vary by production location, please contact local representative for more information.
*Consult RoofNav for FM VSH rated assemblies with DensDeck® StormX® Prime Roof Board
1. Tested in accordance with ASTM C473 method B.
2. Tested in accordance with ASTM E661.
3. Tested in accordance with ASTM E96 (dry cup method).
