Product Details
LIGHTEN UP INSTALLATION AND MEET REQUIREMENTS FOR ASTM C1396 TYPE X GYPSUM DRYWALL IN FIRE-RATED WALLS AND CEILINGS
This 5/8” (15.9 mm) panel is UL certified Type LWX for use in a variety of fire-rated wood and steel-framed assemblies, including some fire-rated ceiling assemblies.1 No back blocking is required for fire-rated ceiling assemblies as with some 5/8″ lightweight products. ToughRock® Lite-Weight Fire-Rated Gypsum Board’s noncombustible (as described and tested in accordance with ASTM E136), dimensionally stable gypsum core has been reinforced with glass fibers, increasing its strength.
1 Consult UL Fire Resistance Directory for assembly information.
*FIRE SAFETY CAUTION – Passing a fire test in a controlled laboratory setting and/or certifying or labeling a product as having a one-hour, two-hour, or any other fire resistance or protection rating and, therefore, as acceptable for use in certain fire rated assemblies/systems, does not mean that either a particular assembly/system incorporating the product, or any given piece of the product itself, will necessarily provide one-hour fire resistance, two-hour fire resistance, or any other specified fire resistance or protection in an actual fire. In the event of an actual fire, you should immediately take any and all actions necessary for your safety and the safety of others without regard for any fire rating of any product or assembly/system. For additional information concerning fire ratings and fire safety, visit our Product Fire, Safety and Use Information page.
Product Specifications
PHYSICAL PROPERTIES
| Thickness | 5/8″ (15.9 mm) |
| Width | 4’ (1220 mm), 54” (1372 mm), 60” (1524 mm) ± 3/32” (2.4 mm) |
| Length | 8′ – 14′ (2440-4270 mm) |
| Weight | 2.0 (9.0) lbs./sq. ft., nominal (kg/sq.m)1 |
| R-Value | °F•ft2•hr/BTU (m2•K/W): 0.56 est. (0.10) |
| Humidified Deflection | 5/8” (16 mm)2 |
1 Represents approximate weight for design and shipping purposes. Actual weight may vary depending on manufacturing location and other factors. 2 Specified minimum values are as defined in ASTM C1396.
CERTIFICATIONS
Certifications may vary by production location, please contact local representative for more information.
Consumer Product Safety Act (CPSA) – For CPSA General Certificate of Conformity, please click here.
Resources
FAQs
Yes. Use the Negative Wind Load Resistance values as listed in Gypsum Association GA 235. If specific published test values are required, we would recommend using DensGlass® Sheathing or DensElement® Sheathing, which have published negative wind load resistance.
Air barrier membranes and coatings can be applied to ToughRock® Sheathing. See the manufacturer’s recommendations for substrate and job site condition limitations.
Georgia-Pacific does not recommend using ToughRock® Sheathing for these applications. Instead, consider using ToughRock® Fireguard C® Soffit Board , DensArmor Plus® Type C, or DensGlass® Sheathing, depending on the fire rated design and are designed for soffit applications.
Georgia-Pacific Gypsum does not offer a limited warranty for ToughRock® Sheathing for exposure to weather conditions. Per the Gypsum Association publication, GA-253, the product needs to be covered with a weather-resistive barrier within 30 days of installation. If you require a product that does have a limited warranty for exposure to normal weather conditions, consider using DensGlass® Sheathing or DensElement® Sheathing.