User Guide
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PRODUCT USE
QUIKRETE
Scratch and Brown Base Coat Stucco is manufactured
as a complete product requiring only the addition of water. Extended board
life and water-stop versions of this product are available.
SIZES
• QUIKRETE
Scratch and Brown Base Coat Stucco - 80 lb (36.3 kg) bags
YIELD
• Each 80 lb (36.3 kg) bag of QUIKRETE
Scratch and Brown Base Coat
Stucco will yield approximately 0.75 cu ft (21 L) of mixed plaster.
TECHNICAL DATA
APPLICABLE STANDARDS
ASTM International - ASTM C926 Standard Specification for Application of
Portland Cement Based Plaster
PHYSICAL/CHEMICAL PROPERTIES
QUIKRETE
Scratch and Brown Base Coat Stucco meets ASTM C926
requirements for Portland cement-based plaster.
INSTALLATION
MIXING
• Blend approximately 1.5 gal (5.7 L) of water per 80 lb (36.3 kg) bag
• Place the water in the mixer, then slowly add the QUIKRETE
Scratch and
Brown Base Coat Stucco
• Mix for 2 - 3 minutes, or until a trowelable consistency is achieved
• Add additional amounts of water if necessary
APPLICATION
QUIKRETE
Scratch and Brown Base Coat Stucco is intended for use over
galvanized expanded metal lath or solid bases such as masonry, cast-in-
place or pre-cast concrete. Installation over these
surfaces shall be in accordance with ASTM C926 and local building codes.
QUIKRETE
Scratch and Brown Base Coat Stucco may be applied with a
trowel or sprayer according to typical stucco techniques.
• Mix only as much QUIKRETE
Scratch and Brown Base Coat Stucco as
can be applied in 1 hour. Variation in water addition will affect color
uniformity.
• Do not apply additional water during application. Proper rewetting of base
coats and finish treatment will eliminate the need for additional water. Avoid
overlapping fresh stucco over previously dried
areas as this will result in a lack of color
uniformity
CURING
Provide sufficient moisture to permit continuous hydration of the cementitious
materials and minimize cracking. The most effective procedure and frequency
will depend on climate and job conditions. Under normal conditions, moist
curing is accomplished by applying a fine fog spray of water generally twice
daily in the morning and evening. Care must be exercised to avoid erosion
damage to plaster surfaces. This procedure should be repeated for several
days following stucco application. During hot and dry conditions, additional
precautions may be necessary, including more frequent misting or the
erection of barriers to deflect sunlight and wind.
Note - QUIKRETE
Finish Coat Stucco (#1201) can be applied over
QUIKRETE
Scratch and Brown Base Coat Stucco in accordance with ASTM
C926 and local building codes.
PRECAUTIONS
Do not apply when temperatures are expected to fall below 40
o
F (4
o
C) within
a 24 hour period.
WARRANTY
The QUIKRETE
®
Companies warrant this product to be of merchantable
quality when used or applied in accordance with the instructions herein. The
product is not warranted as suitable for any purpose or use other than the
general purpose for which it is intended. Liability under this warranty is
limited to the replacement of its product (as purchased) found to be defective,
or at the shipping companies’ option, to refund the purchase price. In the
event of a claim under this warranty, notice must be given to The
QUIKRETE
®
Companies in writing. This limited warranty is issued and
accepted in lieu of all other express warranties and expressly excludes
liability for consequential damages.
The QUIKRETE
®
Companies
One Securities Centre
3490 Piedmont Rd., NE, Suite 1300, Atlanta, GA 30305
(404) 634-9100 • Fax: (404) 842-1425
PRODUCT DESCRIPTION
QUIKRETE
Scratch and Brown Base Coat Stucco is a Portland cement-based stucco designed to
be used as the scratch and/or brown coat in a 3-coat stucco application, or the first coat in a 2-coat
a
pp
lication
Portland Cement Plastering
09 24 00
DIVISION 9
* Refer to www.quikrete.com for the most current technical data,
SDS, and guide specifications