GacoFlex H-25
VOC-Compliant Series Hypalon®* Coatings
H-25
May 2003
Supersedes 01/01

DESCRIPTION:
GacoFlex H-25 Hypalon® is a lead free, air curing, liquid coating. It is designed to yield an elastomeric film of good wear, weather resistance and durability that will resist most chemical environments.
USAGE:
This Hypalon® coating is used as weathering top coat over various primers and elastomeric base coats, including neoprene and polyurethane. Typical uses include roofing over concrete, single-ply, plywood.
CONSISTENCY:
Moderately bodied, suitable for roller, brush or spray application.
STANDARD COLORS:
H-2500 White. Special colors available.
APPLIED PRODUCT DATA
WEATHERABILITY:
Good
CHEMICAL
RESISTANCE:
Excellent salt and acid resistance, good alkali and solvent resistance.
TENSILE:
ASTM D-412-68
Strength:
700 psi (4.83 MPa˛)
These values determined using
Elongation:
350%
H-2500 White.
Permanent Set at Break
20%
Other colors may vary.
HARDNESS, CURED:
ASTM D-2240
78 to 83 Shore A
WATER
ABSORPTION:
ASTM D-471
4.0% max.
WATER VAPOR
PERMEABILITY:
ASTM E-96-66
Method B, 100% R.H. Difference
7 days at room temperature
0.0030 Perm Inches (.08 mm) max.
PACKAGED PRODUCT DATA
COVERAGE:
400 square feet per gallon 1 mil. dry film thickness (9.8 m˛ / L / .025 mm).
SOLIDS:
Weight:
 
Volume:
Method 4041
Fed. Std. 141
 
40.4% to 43.8% depending on color.
 
24.6% to 25.6% depending on color.
V.O.C.:
Does meet California V.O.C. requirements; V.O.C. is approximately 245 grams per liter.
TOXICITY:
The product label includes handling instructions.
FLASH POINT:
ASTM D-56
50°F (10°C) T.C.C.
ADHESION:
Has excellent adhesion to plywood, concrete, GacoFlex E-53 series primers, and all GacoFlex elastomers except LM-60H/V.
STORAGE
STABILITY:
One year from date of manufacture in sealed container when stored below 80°F (27°C).
THINNER
AND CLEANER:
Gaco Western’s T-5125 Compliant Solvent
APPLICATION
Optimum coating time over neoprene is one to two days, and over Hypalon® is 8 to 24 hours. If longer interval passes, coated surface must be cleaned and dried before work proceeds.

May be brushed or roller coated at package consistency. Up to 10% thinning is permissible for cold weather application. During cool, damp weather, the tendency to sag is increased and additional thinner coats may be required to achieve the specified coverage. Cure can be accelerated to achieve full cure at 75°F (24°C).

H-25 series as received can normally be applied by airless spray or internal mix conventional spray equipment. In either case, thinning up to 25% may be required, depending on equipment and temperature. See general instructions for spray equipment recommendations. Refer to Gaco Western, Inc. General Instructions SG-H for spraying instructions.


* duPont’s registered trademark for Chlorosulfonated Polyethylene.