AC-20 + Silicone - Product Data

AC-20 +Silicone
®
Architectural Weatherproofing Products
U.S.A. • since 1862
Non-Sag, Acrylic Latex Caulking Compound
BASiC USeS
• AC-20®’s elastomeric properties
make it an excellent sealant for caulking
interior concrete joints, hollow core
ceiling and loor planks, window and
door frames, vinyl, aluminum, steel and
plywood siding, sheetrock, baseboards
and bathroom and kitchen ixtures.
It may be used to grout marble and
ceramic tile, repair mortar joints,
and, under controlled conditions, to
bed insulated glass units and storm
windows.
2. MANUFACTUReR
Pecora Corporation
165 Wambold Road
Harleysville, PA 19438
Phone: 215-723-6051
800-523-6688
Fax:
215-721-0286
Website: www.pecora.com
Limitations:
• The sealant must be protected from
water for 24 hours after application; do
not caulk outdoors when rain is imminent.
• Windows must be properly weeped since
entrapped water could cause reversion.
Sealant must be given additional time to
fully cure before windows are installed
because of the closed-in conditions.
• Installed sealant shall not be subjected
to repeated exposure of aggressive
cleaning or disinfecting compounds.
PACKAGiNG
• 10.1 fl. oz. (.300 L) cartridges
• 5-gallon (18.9 L) pails
• 55-gallon (208 L) drums
• 29 fl. oz. (.858 L) cartridges
Tru-White Only:
• 29 fl. oz. (.850L) cartridges
• 20 oz sausages (592 ml) sausages
Applicable Standards: AC-20
exceeds the requirements of ASTM C834
Speciication For Latex Sealants.
Movement Capability: 7 1⁄2% in
extension, 7 1⁄2% in compression (15%)
when installed in properly designed joints
within its range of thermal movement
capabilities. Refer to Test Data Box below
for further technical information.
Joint Design: The width of the joint
should be approximately 12 times the
anticipated movement and should fall
within the range of 1/4” (6 mm) to 3/4”
(19 mm). The depth of the joints should
be 1/4” (6 mm) minimum to 3/8” (9 mm)
maximum.
COLOR
• Black, Ivory, Limestone, Brown, Bronze,
Cedar, Almond, Tan, Beige-Grey, Tru-White
and Aluminum Stone
TyPiCAL PhySiCAL PROPeRTieS
at 77° F (25°C); 50% R.h.
3. PRODUCT
DeSCRiPTiON
AC-20 is a pure acrylic latex sealant for
general purpose interior and exterior
caulking in architectural applications
where slight to moderate movement
is anticipated. Formulated with the
highest quality ingredients including a
silicone additive for greater adhesion
and weatherability, AC-20 is completely
compatible with premium-grade latex
and oil paints and will not stain adjacent
surfaces.
AC-20 has superb color stability and
resistance to ultraviolet rays, ozone
and airborne contaminants. It is
mildew resistant and has United States
Department of Agriculture acceptance for
use in meat and poultry processing plants.
In addition to the substrates listed above,
AC-20 is compatible with polystyrene,
polyurethane, cork, foamed and ibrous
glass and gypsum board.
4. TeChNiCAL DATA
Test Property
Value
Adhesion loss (%)
0.5
Artiicial weathering
Adhesion loss (%)
1.0
Cracking
None
Discoloration
None
Slump
None
Wash-out
None
200
Elongation, ultimate (%)
9.8
Extrudability (g/sec)
Pass
Low-temperature lexibility (pass/fail)
60-65
100% Modulus (psi)
90
Recovery (%)
<0.05
Slump (in)
1.1
Stain Index
Pass
Tack-free time (pass/fail)
80-90
Tensile, ultimate (psi)
31
VOC Content (g/L)
Volume Shrinkage (%)
25 - 28
Pass (Classroom & Office)
VOC Emissions
Test Procedure
ASTM C736
ASTM C732
ASTM C732
ASTM C732
ASTM C732
ASTM C732
ASTM C732
ASTM D412
ASTM C731
ASTM C734
ASTM D412
ASTM C736
ASTM D2202
ASTM D2203
ASTM D2377
ASTM D412
ASTM D3960
ASTM C733
CA Section 01350
Since Pecora architectural sealants are applied to varied substrates under diverse environmental conditions and construction situations it is recommended that substrate testing be conducted prior to application.
5. iNSTALLATiON
Surface Preparation: Contact
area must be clean, sound and free of
contaminating substances such as oil,
grease, asphalt, tar, etc. Priming is not
generally required. Dampness but not
saturation or standing water in porous
substrates can be tolerated.
Joint Backing: Joints greater than
3/8” (9 mm) should be illed to within
3/8” (9 mm) of the surface with either
polyethylene or polyurethane backer rod,
preferrably of a non-gassing, non-absorbing
type. Use a diameter that will compress
about 25% when installed. In joints too
shallow to take backer rod, use a bond
breaker tape to prevent three-sided
adhesion.
Application: Although the freezing
point of AC-20 is considerably below 32°
F (0°C), and the sealant can withstand ive
freeze-thaw cycles, for best performance
protect it from severe cold and apply
above 40° F (4°C) to lessen the possibility
of frost in the joints. Fill joints completely
and tool lightly to insure full contact to
both sides of the joint and present a
smooth surface.
As with any waterborne product, the
cure time is dependent on ambient
conditions. Low temperatures or high
humidity will extend cure time, while
higher temperatures or low humidity will
accelerate the cure.
Painting: Sealant may be painted 30-45
minutes after application with quality
grades of latex or oil paints.
Cleaning: Water may be used to
remove excess sealant from substrate and
clean tools before cure; after cure, sealant
must be removed with mechanical means.
Storage Life: At least one year when
stored in unopened containers in dry areas
below 80° F (26°C).
Precautions: AC-20 is nonlammable, non-toxic, non-irritating and
environmentally safe. However, do
not take internally. Refer to our
Safety Data Sheet(SDS) for additional
information.
FOR PROFeSSiONAL USe ONLy
KeeP OUT OF The ReACh
OF ChiLDReN.
8. MAiNTeNANCe
If the sealant is damaged and the bond
is intact, cut out the damaged area and
recaulk. No primer is necessary. If the
bond has been affected, remove the
sealant, clean and prepare the joint in
accordance with instructions under
“Installation.”
9. TeChNiCAL SeRViCeS
6. AVAiLABiLiTy AND
COST
Pecora products are available from stocking
distributors nationwide. For the name
and telephone number of your nearest
representative, call the number below or
visit our website at www.pecora.com.
Pecora representatives are available to
assist you in selecting an appropriate
product and to provide on-site application
instructions or to conduct jobsite
inspections. For further assistance call our
Technical Service Department at
800-523-6688.
7. WARRANTy
10. FILING SYSTEMS
Pecora Corporation warrants its products
to be free of defects. Under this warranty,
we will provide, at no charge, replacement
materials for, or refund the purchase price
of, any product proven to be defective
when used in strict accordance with
our published recommendations and in
applications considered by us as suitable
for this product. The determination of
eligibility for this warranty, or the choice
of remedy available under this warranty,
shall be made in our sole discretion and any
decisions made by Pecora Corporation shall
be inal. This warranty is in lieu of any and
all other warranties, expressed or implied,
including but not limited to a warranty of
merchantability or itness for a particular
purpose and in no case will Pecora be liable
for damages other than those expressly
stated in this warranty, including but not
limited to incidental or consequential
damages.
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•
p r o d u c t s
165 Wambold Road, Harleysville, PA 19438
Phone: 800-523-6688 • 215-723-6051 • FAX: 215-721-0286
•
p e r f o r m a n c e
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