Specification
Submittal Sheet
USG SHEETROCK
®
BRAND
Ultralight PaNElS
Mold toUgh
®
• The lightest 1/2" mold-resistant gypsum wallboard panel available
• Easier to lift, carry and install
• Noncombustible, moisture-resistant gypsum core encased in moisture- and
mold-resistant paper
• Scores and snaps, installs and finishes just like standard drywall
USG Sheetrock® Brand UltraLight Panels Mold Tough® are re-engineered, lightweight gypsum
wallboard panels with a high strength-to-weight ratio composite design. The noncombustible,
moisture-resistant core is encased in 100% recycled moisture- and mold-resistant green face and
brown back papers. The green face paper is folded around the long edges to reinforce and protect
the core and the ends are cut square and even. The long edges of panels are tapered, allowing
joints to be reinforced and concealed with USG Sheetrock® Brand joint treatment systems.
• Areas where moisture and mold resistance is desired
• Non-fire-rated single-layer wall and ceiling applications
• New residential construction
• Repair and remodel construction
• Wood or steel framing
• Can be used for a tile substrate in dry locations or areas with limited water exposure
1. Avoid exposure to sustained temperatures exceeding 125°F (52°C).
2. Avoid exposure to excessive, repetitive or continuous moisture before, during and after
installation. Eliminate sources of moisture immediately.
3. Non-load bearing.
4. Maximum frame spacing for walls is 24" o.c. Maximum frame spacing for ceiling is 24" o.c.
for installations perpendicular to framing and 16" o.c. for installations parallel to framing. On
ceilings, to receive hand- or spray-applied water-based texture, 1/2" USG Sheetrock® UltraLight
Panels Mold Tough should be installed perpendicular to framing with a maximum framing
spacing 24" o.c.
5. Must be stored o of the ground and under cover. Sucient risers must be used to support the
entire length of the gypsum board to prevent sagging.
6. Not suitable for use as a substrate for tile in wet areas such as tubs and showers, gang showers
and other areas subject to direct water exposure.
7. Use as a tile substrate is limited to tile installed according to the most current TCNA and
ANSI specifications. Please consult with the adhesive and tile manufacturers for their
recommendations for maximum size and weight parameters for use with gypsum board.
For high-quality finishing results, USG recommends USG Sheetrock® Brand finishing products.
Painting products and systems should be used that comply with recommendations and
requirements in Appendices of ASTM C840. For priming and decorating with paint, texture or
wall covering, follow manufacturer’s directions for materials used. Gypsum Association GA-214,
Recommended Specification for Levels of Gypsum Board Finish, should be referred to in order to
determine the level of finishing needed to ensure a surface properly prepared to accept the final
decoration.
All surfaces, including applied joint compound, must be thoroughly dry, dust-free, and not glossy.
Prime with USG Sheetrock® Brand First Coat Primer or with an undiluted, interior latex flat paint
with high-solids content. Allow to dry before decorating.
DESCRIPTION
INTENDED FOR
LIMITATIONS
FINISHING AND DECORATING
LIGHTWEIGHT, QUALITY WALL AND
CEILING PANELS WITH MOISTURE AND
MOLD RESISTANCE