Operating Guide

Description
This all purpose joint compound provides overall high performance, as well as superior working qualities and good
open time. It offers excellent bond over bead, trim and fastener concealments. This special latex formulation is ideal
for embedding S
heetrock paper joint tape and for filling, leveling and finishing over gypsum panel joints, fasteners,
bead and trim.
Limitations 1. Protect container from freezing and extreme heat.
2. Prior to using any epoxy coating over any surface treated with joint compound, consult the epoxy coating
manufacturer and follow manufacturer’s specific recommendations regarding the preparation or suitability of
substrates for the epoxy coating. Many epoxy coatings exert significant shear stress on the substrate as the
strong epoxy film shrinks while curing/drying. This stress can cause the bond of the joint compound to fail,
resulting in delamination problems.
Preparation Position and apply S
heetrock
®
brand gypsum panels in accordance with manufacturer’s recommendations.
In cold weather and during gypsum panel joint finishing, temperatures within the building shall be maintained
at a minimum of 55 °F (13 °C). Adequate ventilation shall be provided to carry off excess moisture.
Mix contents lightly without adding water. Use directly from container for covering fasteners and corner bead.
For taping and finishing joints (especially for use in mechanical tools), thin as necessary. Add water in half-pint
increments to avoid overthinning. Remix lightly and test apply after each water addition.
Application Cover joint with a thin layer of compound and embed paper tape, leaving about 1/32" of compound under
feathered edge. Let dry and sand lightly. Apply second coat, feathering approximately 2" beyond first coat.
Let dry, sand lightly as required, and then apply third coat, feathering 2" beyond second coat. Sand lightly as
required when dry. Use 150 grit sandpaper or 220 grit abrasive mesh cloth. Finish fastener heads, corner bead
and inside corners as required with at least three coats of joint compound, feathered out onto panel faces and
finished to a smooth surface.
Decorating For priming and decorating with paint, texture or wallcovering, follow manufacturer’s directions for materials used.
All surfaces, including applied joint compound, must be thoroughly dry, dust-free and not glossy before
decorating. A prime coat of
Sheetrock
®
brand First Coat
™
primer or a similar performing, high quality paint product
designed for a first coat on new drywall surfaces should be applied undiluted and allowed to dry before decoration.
Walls to be covered with wallpaper or vinyl wallcovering should be sealed per manufacturer’s recommendation.
To improve fastener concealment, where gypsum panel walls and ceilings will be subjected to severe artificial
or natural side lighting and be decorated with a gloss paint (eggshell, semigloss or gloss), the gypsum panel
surface should be skim coated with
Sheetrock
®
brand ultra light weight all purpose joint compound to equalize
suction before priming and painting, or spray wall with
Sheetrock
®
brand tuff-hide
™
primer-surfacer.
Sheetrock
®
UltraLightweight
All Purpose Joint Compound
Submittal Sheet
09250
A complete ultralightweight all purpose joint compound providing professional-grade performance
– Up to 40% lighter
– Improved slip
– Strong bond with S
heetrock
®
brand paper joint tape
– Tough surface, yet easy to sand