ToughRock® Gypsum Sheathing
- Substrate that is covered by an exterior finish cladding such as vinyl/fiber cement siding, masonry
- Moisture-resistant1, non-combustible gypsum core
- Available in 1/2″ and 5/8″
- 5/8” is UL and ULC classified Type X
- Designed for direct mechanical attachment with screws, nails or staples to wood and metal framing
Product Details
A VERSATILE GYPSUM SHEATHING SUBSTRATE FOR RESIDENTIAL AND COMMERCIAL APPLICATIONS
1/2″ ToughRock® Gypsum Sheathing and 5/8” ToughRock® Fireguard X® Sheathing are recommended for use in new building construction or renovation work that is covered by an exterior finish cladding such as vinyl/fiber cement siding, masonry veneer or wire lath stucco.1 It is designed for direct mechanical attachment to wood or steel framing. 5/8” ToughRock Fireguard X Sheathing is UL and ULC classified Type X for use in a variety of fire-rated assemblies.2 ToughRock Sheathing is manufactured to meet the requirements of ASTM C1396, Section 9, and should be installed per ASTM C1280 and Gypsum Association documents GA-253 and GA-254
1 ToughRock® Sheathing is not intended for long-term exposure to the weather. Local weather conditions will dictate the length of time sheathing may be left exposed. The sheathing should be covered by an exterior finish cladding or building felt or equivalent protection if weather conditions will be severe during construction. 2 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 | nominal inches: 1/2″ (12.7 mm), ± 1/32″ (0.8 mm)3 |
| Width | nominal: 4′ (1220 mm), – 1/8″ (3 mm)3 |
| Length | standard: 8’ (2440 mm) ± 1/4″ (6.4 mm)3 |
| Weight | lbs/sq. ft. nominal (kg/m²): 1.7 (9)1 |
| R Value | 0.45 (0.079)2 |
| Humidified Deflection | 10/8″ (32 mm) |
| Thickness | nominal inches: 5/8” (15.9 mm), ± 1/32” (0.8 mm)3 |
| Width | nominal: 4′ (1220 mm), – 1/8″ (3 mm)3 |
| Length | standard: 8’ (2440 mm) ± 1/4″ (6.4 mm)3 |
| Weight | lbs/sq. ft. nominal (kg/m²): 2.2 (11)1 |
| R Value | 0.48 (0.085)2 |
| Humidified Deflection | 5/8” (15.9 mm) |
1 Represents approximate weight for design and shipping purposes. Actual weight may vary depending on manufacturing location and other factors. 2 Per Gypsum Association document GA-235. 3 Specified minimum values are as defined in ASTM C1396.
CERTIFICATIONS
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.
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.
The paper facers are made with 100% recycled paper. The total amount of recycled content depends on the manufacturing location. Refer to GP Gypsum Technical Services (1-800-225-6119) for more information.
ToughRock® Sheathing should be installed per ASTM C1280 and Gypsum Association documents GA-253 and GA-254.