Operating Guide

with the consistency adjusted for spray application. With either a hand-held hopper gun or machine application
equipment without catalyst spray, apply texture to provide a uniform texture appearance. Vary aggregate
grading, aggregate proportion, number of passes over the surface, air pressure and nozzle orifice size as
necessary to achieve the desired finish. For more information about spray-applied finishes, see USG literature
PM6, Veneer Plaster Application Technique.
I
MPERIAL Veneer Basecoat applied to concrete block
The surface must be porous and develop proper suction or be
scored to provide adequate mechanical bond. Lightly spray with water to provide uniform suction. Fill and level
all voids, depressions and joints with I
MPERIAL Basecoat and allow to set; then apply subsequent coats as with
gypsum base application, leaving the final surface rough and open to achieve proper bonding of the finish coat.
I
MPERIAL Veneer Basecoat applied to monolithic concrete
Prepare the surface with USG
™
Plaster Bonder. Fill all
voids and depressions with I
MPERIAL Basecoat Plaster and allow to set and partially dry. Apply IMPERIAL Basecoat
Plaster as with gypsum base or concrete block.
Important: As no suction is provided over surfaces treated with a
plaster bonding agent, the applied basecoat surface must be raked or broomed once the material has become
firm to provide proper suction for the finish coat. Failure to do so may result in delamination of the finish material.
Product Data
Coverage:
I
MPERIAL Veneer Basecoat covers approximately 3,250-4,250 sq. ft. (335-435 m
2
) of gypsum base or
2,700-3,600 sq. ft. (275-370 m
2
) of concrete per ton (metric ton) of plaster.
Compliance with Standards: I
MPERIAL Veneer Basecoat meets ASTM Designation C587.
Warning: Store all IMPERIAL Gypsum Base flat. Panels are heavy and can fall over, causing serious injury or death.
Do not move unless authorized.
Storage: Store material in a cool, dry place. Avoid direct sunlight. Maintain temperature above 40 °F (4 °C).
Shelf Life: Up to 6 months under protected storage conditions. Rotate stock.
Availability and Cost: IMPERIAL Veneer Basecoat is distributed throughout the United States. Contact a United
States Gypsum Company sales office or sales person for additional information.
Packaging: IMPERIAL Veneer Basecoat is available in 50 lb. (22.7 kg) bags.
Submittal
Job Name
Approvals:
Contractor Date
WARNING!
When mixed with water, this
material hardens and becomes
very hot - sometimes quickly.
DO NOT attempt to make a
cast enclosing any part of the
body using this material.
Failure to follow these
instructions can cause severe
burns that may require surgical
removal of affected tissue or
amputation of limb. Long-term
breathing of respirable
crystalline silica dust can cause
permanent lung damage and/or
cancer. Dust may cause
irritation to eyes, skin, nose,
throat and upper respiratory
tract. Avoid irritation by
reducing exposure to dust. Use
in a well-ventilated area or
provide sufficient local
ventilation. Wash with soap and
water after use. Do not ingest.
If dusty, wear a NIOSH/MSHA-
approved dust respirator. Wear
eye protection. If eye contact
occurs, flush thoroughly with
water for 15 minutes. If
irritation persists, call
physician. If ingested, call
physician. Product information
and MSDS: [phone] or
www.usg.com.
KEEP OUT OF REACH OF
CHILDREN.
Trademarks
The following trademarks used
herein are owned by United States
Gypsum or a related company:
D
IAMOND ,D URABOND ,E ASY S AND ,
I
MPERIAL
,R ED T OP ,S HEETROCK ,
S
TRUCTO -G AUGE and USG.
Note
Products described here may not
be available in all geographic
markets. Consult your U.S.
Gypsum Company sales office or
representative for information.
Notice
We shall not be liable for incidental
and consequential damages,
directly or indirectly sustained, nor
for any loss caused by application
of these goods not in accordance
with current printed instructions or
for other than the intended use.
Our liability is expressly limited to
replacement of defective goods.
Any claim shall be deemed waived
unless made in writing to us within
thirty (30) days from date it was or
reasonably should have been
discovered.
Manufactured by
United States Gypsum Company
125 South Franklin Street
Chicago, IL 60606
800 USG.4YOU (874-4968)
www.usg.com
P776/rev. 11-05
© 2005, United States Gypsum Company.
Printed in U.S.A.
Safety First!
Follow good safety and
industrial hygiene practices
during handling and installation
of products and systems. Take
necessary precautions and wear
the appropriate personal
protective equipment as
needed. Read material safety
data sheets and related
literature on products before
specification and/or installation.