EXPERT ADVICE
SEALCOATING
PERFORMANCE
Sealer Film Formation
Mechanism and the
Importance of Proper
Cure Conditions By Girish C. Dubey
M
ajority sealcoatings are water-based
coatings, either
based on refined tar (RTS)
or asphalt emulsion (AE).
Such coatings are safe to handle, store,
and provide years of projection to asphalt
surfaces, when applied properly
and allowed to cure under the right
ambient conditions. In this article we
will discuss the film formation mechanism
and the desired ambient conditions
for initial and final cure of sealcoatings.
As you know, water is the major
component of sealcoatings. The sealer
supplied as a concentrate contains
typically 60% water by volume. After
adding 30% water to 100 gallons of
the concentrated sealer, the water pro-
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