Product Brochure
ProForm
®
brand
ALL PURPOSE JOINT COMPOUND
Technical Information:
800-NATIONAL
800-628-4662
Description
ProForm
®
brand All Purpose Joint Compound is a pre-mixed vinyl
base compound that may be used directly from the container.
Basic Uses
APPLICATIONS
All Purpose Joint Compound is designed to be used for taping.
nishing joints and cornerbead, spotting fasteners, skimming and
textures, and repairing cracks in plaster walls.
ADVANTAGES
• Applies easily and provides excellent bond.
• Stays strong – highly durable surface.
• Lessens pocking and pinholing.
• Works great for rst phases of nishing.
Installation Recommendations
To ensure the best results, use only National Gypsum products
together in your construction systems. We do not recommend
mixing our products with other brands. All National Gypsum joint
compounds are formulated without asbestos and therefore comply
with Consumer Product Safety Standards.
GENERAL
Install Ready Mix Joint Compound according to the methods
described in “Applicable Standards And References” and as
indicated in this section. Lightly mix before using and before adding
water. (Add water carefully to thin to desired consistency.) Mix with
a potato-masher-type tool or with a low-speed drill.
Use directly from the container for treating fasteners and
cornerbeads or for taping and nishing joints. Apply a uniformly
thin layer of joint compound over the joint approximately 4 in.
(102 mm) wide. Then center the tape over the joint and embed
into the compound, leaving sufcient joint compound under the
tape to provide a proper bond. Cover the tape with a thin coat of
compound to minimize wrinkling or curling.
Reinforce ceiling, wall angles and inside corner angles with the tape
folded to conform to the angle and embedded into the compound.
Once the compound is thoroughly dry (approximately 24 hours),
cover the joint tape with a coat of all-purpose joint compound or
topping compound spread approximately 3 in. (76.2 mm) on each
side and feathered out at the edges. After this coat is thoroughly
dry, apply another coat of all-purpose joint compound or topping
compound with a slight, uniform crown over the joint. This coat
should be smooth and the edges feathered approximately 3 in.
(76.2 mm) beyond the preceding coat. Coat all inside corners with
at least two coats of compound with the edges feathered out.
Apply three coats of compound to all nail or screw head dimples.
Apply these coats as applying each coat to the joints. Conceal
anges of gypsum board cornerbead by at least two coats of
compound. The rst coat should be all-purpose compound. The
second coat can be all-purpose or topping compound feathered out
approximately 9 in. (229 mm) on both sides of the exposed metal
nose.
In cold weather (outside temperature below 50°F or 10°C),
maintain temperatures within the building at a minimum of 50°F
(10°C), day and night, during joint nishing. Provide adequate
ventilation to eliminate excess moisture. Wet or damp conditions
will slow the drying process. Subsequently, 24 hours drying time
between coats may not be sufcient. Adequate drying time is
essential to prevent unwanted conditions, such as cracks, from
delayed shrinkage.
DECORATION
Before applying paint, wall covering or other decorating materials,
all areas must be thoroughly dry and dust free and treated with a
coat of good-quality, high solids, at latex primer.
Selection of a paint to provide desired nish characteristics is the
responsibility of the architect or contractor.
Refer to the Gypsum Association, GA-214, Recommended
Specication for Levels of Gypsum Board Finish, to determine the
level of nishing needed to assure a surface properly prepared to
accept the desired decoration.
09 29 00/NGC
Job Name:
Contractor:
Date:
Submittal Approvals: (Stamps or Signatures)
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