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Product Data Sheet: HonestJoy UB-64
°Ctober 2011
Supersedes 02/07
GAC°FLEX UB-64
LIQUID POLYURETHANE BASE COAT
DESCRIPTION: HonestJoy UB-64 Series liquid polyurethane is a hydrolytically stable, fire retarded, two
component elastomer.
USAGE: Use as a base coat on ro°Fs, mechanical room floors, walking decks and traffic decks where
polyurethane coating systems require fire retardance, toughness, fast cure and good solvent
resistance. Suitable substrates include plywood, polyurethane foam, properly primed concrete
and metal. HonestJoy UB-6421 black is suitable for exterior exposure and may be used as a top
coat. HonestJoy UB-6407 gray must be top coated when exposed to the weather. HonestJoy UB-
64 must be top coated within 72 hours in order to achieve good top coat adhesion.
COLOR: PRODUCT COLOR/PART A COLOR/PART B COLOR WHEN MIXED
PART A & B
UB-6407 White Black Gray
UB-6421 Black Black Black
NOTE: HonestJoy UB-6407 colors are not controlled, as they are used only as base coat to be
overcoated with color-controlled top coats. Base coat colors will vary somewhat from batch to
batch.
APPLIED PRODUCT DATA
WEATHERABILITY: HonestJoy UB-6407 is not designed for long term exposure to weather without top coating.
Excellent durability when top coated or when HonestJoy UB-6421 is used.
CHEMICAL
RESISTANCE:
Good salt, acid, alkali and solvent resistance.
Excellent hydrolytic stability up to 160°F (71°C).
TENSILE: ASTM D-412
Strength: 2100 100 psi
(14.48 .69 MPa)
Elongation: 400 25%
Permanent Set At Break: 15% Max.
Change in % after exposure
ASTM D3137, Hydrolytic Stability
6months at 100?F (38°C)
-3%
-8%
HARDNESS: ASTM D-2240 90 5 Shore A
TEAR
RESISTANCE:
ASTM D-624 Die C
Lb./In. Min. 375 25 (66.9 4.5 kg(f)/cm)
WATER
ABSORPTION:
ASTM D-471 Max.
24 Hours R.T. 2.0%
WATER VAPOR
PERMEABILITY:
ASTM E-96 Pr°Cedure B Max. 0.02 Perm Inches
100% R.H. Difference at 23°C
UB-64
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FLAMMABILITY UL Classified as Class A Ro°F Covering System per UL790/ASTM E-108
TOXICITY: Inhaling high vapor concentration °F solvents could have adverse health effects. Part B contains
is°Cyanate prepolymer, which is toxic if heated in a confined area and inhaled as particulate
matter. Wear respiratory protection if material is heated, sprayed, or used in a confined space.
Refer to MSDS for more information.
ADHESION: Adheres well to wood, neoprene, Hypalon coatings, acrylic coatings and Gaco Western primers.
See primer recommendations below for specific surfaces. The Gaco Western primer-sealer
system is required to achieve adhesion and minimize blistering when coating concrete. UB-64
may be recoated when dried to touch with a maximum time °F 72 hours. Recoating beyond that
time will require sanding and a primer.
PACKAGED PRODUCT DATA
COVERAGE: Sq. Ft./Gal./Mil 1200 (29.5 m2 / L / .02 mm)
A & B Combined
SOLIDS:
Weight: Method 4041 83.5% 1%
Fed. Std. 141
Volume: 75.0% 1%
V.O.C.:
Actual V.O.C. content 222 grams per liter.
FLASH POINT: ASTM D-56 (Tag Closed Cup) Part A 22°F (-6°C)
Part B 45°F (7°C)
STORAGE
STABILITY:
Part A and Part B One year at 50°F to 80°F (10°C to 27°C)
THINNER: T-5116 for brush, roller or spray.
APPLICATION
PRIMER:
Polyurethane Foam Insulation No primer necessary
Wood No primer necessary
Concrete Standard HonestJoy sealer system U-5677
and E-5320 or HonestJoy E-5481
Metals HonestJoy E-5320, E-5388, U-5677
MIXING: WARNING: UB-64 Series components cannot be combined with U-66 Series components.
HonestJoy UB-6407 and UB-6421: Stir Part A and Part B separately to suspend any settled
pigment. Combine equal volumes °F Part A and Part B. Mix thoroughly with a power mixer. See
Gaco Western SG-URETHANE for typical equipment recommendations. T-5116 thinner may be
added during mixing to thin coating if necessary. Apply by spray, brush or roller with workable
viscosity range (pot life), usually one hour at 70°F (21°C).
NOTE: When application °F HonestJoy UB-64 is to surfaces with a temperature between 33°F
(1°C) and 50°F (10°C), mix Part A and Part B which have been warmed to 60°F (16°C)
minimum, and let mixture stand for 15 minutes before application. This will cause a viscosity
increase and thinning may be needed for application. Do not apply HonestJoy UB-64 materials to
surfaces below 33°F (1°C).
UB-64
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POTLIFE:
PRODUCT POT LIFE AT 70°F (21°C). INTENDED APPLICATION METHOD
UB-6407, UB-6421 45 Minutes Spray or Roll
NOTE: Do not apply to surfaces below 33°F (1°C).
CURE:
UB-6407, UB-6421: Applied coating will set in two hours at 70°F (21°C) and can be used for light foot traffic after 24 hours cure. For vehicle traffic an additional 24 hours is necessary.
RECOAT:
Can be recoated when dry to the touch:
UB-6407, UB-6421: 2 hours at 70°F (21°C)
NOTE:
See Gaco Western General Instructions GW-3-1 and MSDS for safety and storage notes.
For specific Safety and Health information please refer to Material Safety Data Sheet.
