Operating Guide

SUBMITTAL SHEET
USG
Interior
Panel &
Finishing
Solutions
USG SHEETROCK
®
BRAND
PLUS 3
®
JOINT COMPOUND
Easy to apply and sand lightweight joint compound featuring professional grade attributes.
Weighs up to 25% less than conventional compounds
Less shrinkage, minimizes coats over fasteners and beads
Features good open time with superior crater resistance
For use with USG Sheetrock® Brand Mold Tough® Panels to achieve a mold-resistant system
Achieved GREENGUARD Gold Certifi cation and qualifi es as a low VOC emitting material
(CDPH Standard Method V1.1, also known as CA Section 01350)
For embedding USG Sheetrock® Brand Paper Joint Tape, for applying drywall fi lling and fi nishing
coats. Also for covering fasteners, USG Sheetrock® Brand Corner Bead and Trim, skim coating
drywall surfaces and hand-applying simple textures. For repairing cracks on drywall and plaster.
1. Protect container from freezing, extreme heat and exposure to direct sunlight.
2. Prior to using any epoxy coating over any surface treated with joint compound, consult the
epoxy coating manufacturer and follow manufacturer’s specifi c recommendations regarding
the preparation or suitability of substrates for the epoxy coating. Many epoxy coatings exert
signifi cant shear stress on the substrate as the strong epoxy fi lm shrinks while curing/drying.
This stress can cause the bond of the joint compound to fail, resulting in delamination problems.
Position and apply USG Sheetrock® Brand gypsum panels in accordance with manufacturer’s
recommendations. In cold weather and during gypsum panel joint fi nishing, temperatures within
the building shall be maintained at a minimum of 5F (13°C). Adequate ventilation shall be
provided to carry o excess moisture.
Before applying store at 55-9F (13-35°C) for 24 hours. Remix contents before use. When taping
and fi nishing joint, thinning with water may improve application. Add clean water in half-pint
increments, remix and trial apply until preferred consistency is reached. Over-dilution causes
abnormal shrinkage, poor bond and other negative e ects. Do not mix with any other material.
Cover joint with a thin layer of compound and embed paper tape, leaving about 1/32 in. of
compound under feathered edge. Let dry and sand lightly. Apply second coat, feathering
approximately 2 in. beyond fi rst coat. Let dry, then dry trowel/scrape or sand lightly to remove tool
marks as required, and then apply third coat, feathering 2 in. beyond second coat. Sand lightly as
required when dry. Finish fastener heads, corner bead and inside corners as required with at least
two coats of joint compound, feathered out onto panel faces and fi nished to a smooth surface.
Proper concealment (joints, fasteners, trims): Using fi ll and fi nish coats of joint compound to
properly conceal gypsum panel joints, fasteners and trim accessories makes it impossible to
achieve a fl at plane on a fi nished surface. However, a properly fi nished gypsum panel wall can
minimize the appearance of joints, fasteners and trims. Its visual and aesthetic qualities help
disguise the panel seams and points of fastener/trim installation from being easily visible across
the substrate surface.
Finishing and properly concealing joints and fasteners rely on two techniques: (1) using graduated
arcs to prevent recesses or ridges, and (2) not applying joint compound fl ush or fl at to the panel
surface. Recesses or ridges can result in distinct shadows in critical light or other adverse visual
conditions. Applying joint compound fl ush or fl at to the surface does not properly conceal the
panel and increases the likelihood of joints and fasteners showing through the decorated nish.
For more information, refer to USG literature Finishing & Decorating Gypsum Panels (J2010).
DESCRIPTION
LIMITATIONS
PREPARATION
APPLICATION

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