TB 43-0242
Component A to one part of Component B. Using more
3-6. Drying Concerns. CARC dries as solvents
or less of Component B won't make the paint dry quicker
evaporate. Then it cures, a chemical reaction. Other
or produce a better coating. In fact, if you use the wrong
paints, like lacquers, only dry as the solvent evaporates.
proportions, you may end up with paint that peels right
CARC will cure at temperatures below 60 , but it takes
F
off.
much longer. At temperatures over 100 , you may
F
need to add thinner to slow the drying time so you can
3-8. One-part CARC. You can use the onepart
get a smooth coat.
polyurethane topcoat for spot painting. There's no
mixing of components-but you still have to stir it well. If
3-7. Coverage. Mix up only as much paint or
you don't use the entire can, you may be able to save
precoating as you need. A quart of
what's left overnight. Just close the can tightly. When
you open the can the next day, remove any skin that
may have formed on the surface of the paint. Stir the
remainder well, and use it.
3-9. Epoxy Curing. Once you mix the epoxy primer or
two component topcoat, they start hardening-curing-and
nothing can stop it. You have about 15 hours for the
epoxy or 8 hours for the topcoat to use them after
mixing.
3-10. Time Line. Here's a time line showing how long
each step takes to cure, how long you've got until the
polyurethane topcoat, epoxy primer or epoxy enamel
next step must be started and the maximum time
will cover about 100 square feet. If you're painting more
allowable between steps.
or less than that, you can use the two-component
topcoat. Stir each component thoroughly, then measure
outwhat you need. Be sure that you mix the two parts of
the epoxy primer or twocomponent topcoat in the proper
proportion. For most products, that's four parts of
4 hours or less 30 min to
30 min to 7 days
7-14 days
24 hours
(within 24 hours
4-6 hours
if possible) 30 min
Prepare surface; Wipe with
Apply Apply Dry to Dry
Cured
feather edge.
thinner.
primer topcoat touch through
Wash with Coat with
detergent coating
and water. compound.
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