GacoFlex A-3611
Acrylic Latex Liquid Tape
A-3611
(formerly A-9611)
December 2001
Supersedes 7/00

DESCRIPTION:
GacoFlex A-3611 water-borne, single component elastomeric coating is characterized by excellent hardness, strength, adhesion and water resistance.
USAGE:
Intended for spray application over primed metal roofs as a joint and fastener treatment in place of fabric and/or elastomeric sheet tape. A-3611 can be applied by brush or roller.

Can be used as a tape-seal over cracked polyurethane foam insulation.

LIMITATIONS:
DO NOT apply to interior urethane foam. Where service conditions are below 10F (-12C)., contact Gaco Western, Inc. Do not apply on surfaces subject to prolonged water soak.
COLOR:
A-3611 Gray.
APPLIED PRODUCT DATA
WEATHERABILITY:
Not intended as a top coat.
TENSILE:
ASTM D-412
Strength:
Elongation:
Permanent Set at Break:

350 psi (24.7 kg/cm)
125%
<5%<>
HARDNESS:
ASTM D-2240
Shore A
70
TEAR RESISTANCE:
ASTM D-624 DIE C
Lb./In.
85 (15.2 kg/cm)
WATER VAPOR
PERMEABILITY:
ASTM E-96 Procedure B
0.06 Perm Inches (1.5 mm)
TOXICITY:
Not for use in contact with edible substances or potable water.
ADHESION:
Adhesion is excellent to urethane foam, built-up roof materials, masonry, concrete and wood. A-3611 also has excellent adhesion to all GacoFlex elastomers except LM-60H/V. A primer must be used on ferrous metals to prevent corrosion. Contact Gaco Western for specific information.
PACKAGED PRODUCT DATA
COVERAGE:
Sq. Ft./Gal./Mil.
978 (24 m / L / 0.025 mm)
SOLIDS:
Weight:
 
Volume:
Method 4041
Fed. Std. 141
 
70%
 
63%
V.O.C.:
35 grams per liter
A.P.C.:
Products meet A.P.C. requirements.
FLASH POINT:
ASTM D-1310
Above 200F (93C) T.O.C.
STORAGE
STABILITY:
Twelve months. Protect from freezing. Freezing temperature 29F (-2C). If frozen, thaw at 50 to 80F (10 to 27C).

Some separation can occur after storage of several months. Stir thoroughly before using to make homogeneous.

THINNING:
Thinning is not recommended under normal conditions. When desired, A-3611 may be thinned up to 5% with water with A-32
APPLICATION
Apply A-3611 GacoFlex Liquid Tape on all metal roof seams, joints, fasteners and penetrations at 75 to 100 linear feet (24 to 30 meters) of seams per gallon or 150 to 200 fasteners per gallon. Maximum applied thickness should be limited to 1/8th inch (3.2 mm) per coat.

A-3611 is typically applied directly from the container by brush, or bulk loading caulking gun or using airless spray equipment with a spray gun and gun extension tube but no spray tip. Sprayer is operated at low pressure (300 to 600 psi (2.07 to 4.14 MPa)) to produce a caulking bead of A-3611 Liquid Tape when the gun is triggered.

When applying A-3611 in hot weather, float a small amount of clean water on top of opened containers to prevent skinning. It is recommended that equipment be flushed with water at the end of each day to avoid potential problems such as coating build-up or plugging.

Clean equipment with water supplemented with liquid detergent. Follow equipment manufacturer?s instructions for final cleaning and storage.

A-3611 is water based and requires the complete evaporation of the water to achieve cure. DO NOT apply to surfaces that are, or will reach 50F (10C) within 12 hours.