HARDNOSE / WHITECOTE PAINTS
/ Whitecote Paint is a high-gloss extreme durability topcoat that can be applied
over a number of surfaces, including heavy-duty vehicle chassis and trailers,
floor pans, agricultural machinery, and many marine applications as well,
including motors, heat exchangers, pumps, masts, decks, and hand rails. Hardnose
/ Whitecote coatings can also be used to protect equipment from strong acids,
alkali, and other aggressive materials. It can be applied over existing single
and two-component primers as well as in a complete POR15 paint application
which would include POR15 Rust Preventive Paint as a primer and POR15
Self-Etching Primer as an intermediary coat. Hardnose / Whitecote coatings will
not leave brush marks and will dry in less than an hour but will take 3 or 4
days to fully cure. Like many other POR15 coatings, Hardnose / Whitecote is a
moisture-cured coating, which means it is strengthened by exposure to moisture.
Hardnose / Whitecote purchase consists of two items:
A green paint can, labeled Hardnose / Whitecote a blue can, which contains the
basic resin formulation.
A smaller light blue can, labeled Hardener/Activator.
Your can of Hardener/Activator is sealed tightly. Remove the lid carefully and
cover with a paper towel while prying off inner seal to avoid accidental
spillage or splash. Your Hardener/Activator is very sensitive to moisture and
humidity; so open it in a dry area. Keep both hardener and resin tightly capped
when not in use. This is very important for maximum shelf life.
1 part Hardener/Activator with 4 parts Hardnose / Whitecote in a separate,
re-sealable container. A clean glass jar works well as does a clean paint can
with lid. Stir the combined contents thoroughly. When the coating is thoroughly
mixed, thin as required.
may mix partial quantities of Hardnose / Whitecote for small jobs, and you may
use any measuring device you happen to have around (coffee scoop, measuring
spoons, cups etc.). All you have to do is follow this formula:
1 part Hardener/Activator with 4 parts Hardnose / Whitecote.
/ Whitecote Paint has a long pot life, up to 8 hours, if the lid is kept on the
mixed batch when it is not in use.
to be coated should be dry and free of grease, oil, and other contaminants. Use
POR15 Marine Clean, diluted 1 part Marine Clean to 8 parts water to remove
light contamination. Then rinse with water and allow to dry.
instructions above, then sand surface lightly with 240 grit sandpaper and wipe
clean with dry tack cloth and paint.
with Marine Clean as above, then sand with 300 grit sandpaper and apply one
light to medium coat of POR-15 Self-Etching Primer. Allow to cure for 30 Minutes
at 68 degrees F (20 degrees C), or longer in cooler temperatures. Apply Hardnose
/ Whitecote as final finish.
two coats of POR15 Rust Preventive Paint over a sandblasted surface or a surface
prepared with Marine Clean and Metal Ready. Then apply one light to medium coat
of POR15 Self-Etching Primer as soon as POR15 Rust Preventive Paint has cured
to ensure maximum adhesion. Allow POR15 Self-Etching Primer to cure for 30
Minutes at 68 degrees F (20 degrees C), or longer in cooler temperatures. Apply
Hardnose / Whitecote as final finish. If surface has any irregularities that you
wish to remove, apply a medium coat of Tie-Coat Primer over the cured POR15 Self
Etching Primer. Allow this to cure for 2 to 3 days, then sand smooth and finish
with 300 grit. Wipe down with dry tack cloth and apply Hardnose / Whitecote.
a minimum of 2 medium coats for general automotive use, and a minimum of 3 full
coats for heavy marine and industrial use. Hardnose / Whitecote may be applied
by brush, spray, or roller. You can use any type of brush you prefer; Hardnose /
Whitecote will flow out immediately, eliminating brush marks.
down a medium covering coat, but be careful to avoid runs. A second coat may be
applied when dry to the touch, usually 15 20 minutes later, though the
second coat may be left up to 2 days before re-coating without sanding. Best
method: recoat at 23 hourly intervals.
temperatures below 64 degrees F (18 degrees C), drying times will be extended
and consequently runs may be more likely.
minimize this in colder temperatures, small items can be warmed with a heat gun,
or air temperature raised for larger items. Do not overheat items above 75
degrees F (24 degrees C).
only with Xylene, if thinning is needed.
Solvent or lacquer thinner may be used for cleanup. Hardnose / Whitecote may be
thinned up to 25%, though you will need more coats to retain dry film thickness.
when applying a second or third coat by brush, surface tension may increase
between coats. To reduce this tension, add some solvent to the mix so the
coating will drop and flow out properly. For best results, apply at 6875
degrees F (18-24 degrees C) with less than 70% humidity.
/ Whitecote prefers low-pressure application. Siphon or Pot Gun application: use
approx. 25 psi (180 kpa).
or top container gun: use approx. 15- 18 psi (120 kpa). At 6071 degrees F
(1622 degrees C), thin 515%. At 7182 degrees F (2228 degrees C),
temperatures over 82 degrees F (28 degrees C) where possible.
booth ideal temperature is 71 degrees F (22 degrees C), 50% humidity, and low airflow.
thinning rates are a guide only. Consider also the type of gun, air temperature,
and humidity. Hardnose / Whitecote can be cut with regular compounds if you have
a run or imperfections, though it is best if you leave it for a week or two
before cutting to make sure coating is hard (runs may take longer to fully cure
due to added thickness).
should be 60% or lower when spraying Hardnose / Whitecote because the higher
humidity may cause it to set up too quickly and before it has a chance to flow
out evenly, thus resulting in a wavy appearance. This is especially true in
high-humidity southern climates during the summer. Whenever possible, spray in a
humidity controlled (air conditioned) environment. Best temperature is 68-75
degrees F (18-24 degrees C). If this is not possible, apply Hardnose / Whitecote
in the morning when temperatures are at their lowest. Hardnose / Whitecote can
be applied successfully in higher humidity, but temperatures must be below 77
degrees F (25 degrees C). In temperatures over 86 degrees F (30 degrees C), the humidity must be
low. Avoid high humidity and high temperatures.
Hardnose / Whitecote will not perform as specified until it has cured for a
minimum of 4 days at an average temperature of no less than 68 degrees F(18
degrees C). For
example: Do not put engine parts into service before the 4-day cure time.
Elevated temperatures will not speed up cure. Do not oven bake parts.
you can, but you wont get the same adhesion or leveling as you do with Rust
Preventive Paint as a primer.
Can I apply Hardnose / Whitecote directly over POR15 Rust Preventive Paint without POR15 Self-Etching Primer?
you can, but adhesion problems might occur on edges or corners. Also, runs are
What if I have different size cans or cans with different batch numbers? I want to make sure my final coat is 100% color uniform.
sure that at least one can will be enough for the entire final coat. If not, you
will need to blend some of the resin cans together so you will have enough for
the entire final coat.
Please remember these instructions are general guidelines only and cannot and do not cover every application and environment. If you remain unsure as how to proceed, please call toll-free for technical advice at 800-689-7504.
contained herein is to our knowledge true and accurate, but all recommendations
or suggestions are made without guarantee. Since the conditions of its use are
beyond our control, RestoMotive Labs / POR15 Inc., disclaims any liability
incurred in connection with the use of its products and information contained
herein. No person is authorized or empowered to make any statement or
recommendation not contained herein, and any such statement or recommendation so
made shall not bind the Corporation. Furthermore, nothing contained herein shall
be construed as a recommendation to use any product in conflict with existing
patents covering any material or its use, and no license implied or in fact is
granted herein under the claims of any patents.