ToughRock FireGuard X Fire-Rated Type X Gypsum Board
Fire-Rated Type X Gypsum Board
DensGlass Shaftliner Reinforced Fire-Rated Fiberglass Wall Panels
toughrock drywall panel

ToughRock® Fireguard X Gypsum Board

  • 5/8″ ToughRock® Fireguard X® board is UL classified Type X
  • Reinforced with the glass fibers to increase strength and fire resistance
  • Used in a variety of fire-rated wood and steel-framed assemblies1
  • Reduces noise more effectively than ½” standard or lightweight drywall

1Consult fire resistance directory for assembly information.

Give your interior wall and ceiling construction the protection of a UL classified Type X fire resistance rating.

Noncombustible (as described and tested in accordance with ASTM E136) ToughRock® Fireguard X® Gypsum Board is designed for use in interior drywall applications for wall and ceiling construction in assemblies with a designated fire-resistant rating.1 Its dimensionally stable gypsum core is reinforced with glass fibers, increasing its strength and fire resistance. 5/8″ (15.9 mm) ToughRock Fireguard X is UL-classified Type X and has a flame-spread rating of 15 and smoke developed 0 when tested in accordance with ASTM E84.

1Consult 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.

Fire Resistance

Enhanced fire resistance – UL classified Type X


Physical Properties

nominal inches: 5/8″ (15.9 mm), ± 1/64″ (0.4 mm)


nominal: 4′ (1220 mm), 54” (1372 mm), 60″ (1524 mm) ± 3/32″ (2.4 mm)


standard: 8′ (2440 mm) to 14′ (4270 mm), ± 1/4″(6.4 mm)


lbs./sq. ft., nominal (kg/m²) 2.2 (10.7)1

R Value

ft2•°F•hr/BTU (m2•K/W): 0.56 est. (0.10)

Humidified Deflection

max: 5/8” (16 mm)2

1Represents approximate weight for design and shipping purposes. Actual weight may vary depending on manufacturing location and other factors. 2Specified minimum values are as defined in ASTM C1396.

Warranty / Certifications
GREENGUARD Gold Certification

Certifications may vary by production location, please contact local representative for more information.


Tech Guides
Safety Data

Product FAQs

Should gypsum board be installed vertically or horizontally?

While gypsum boards are stronger in one direction, they may be installed either vertically or horizontally on both wood and steel studs. If the boards are to be used in a fire rated assembly, then use the board orientation that is stated in your specific rated assembly.

What should we do if the gypsum board gets wet?
What is the fire rating of ToughRock® Fireguard X® Gypsum Board?
How often is a control joint required?

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