1.1 This specifi cation covers the requirements for a highperformance
two-component UV-stable polyurethane topcoat
(ASTM D 16, Type V polyurethane). It is intended as a topcoat
that provides excellent color and gloss retention, not as a
thick-section elastomeric coating.
1.2 Coatings meeting the requirements of this specifi cation
are generally suitable for exposures in environmental zones 1A
(interior, normally dry), 1B (exterior, normally dry), 2A (frequently
wet by fresh water, excluding immersion), 2B (frequently wet
by salt water, excluding immersion), 3B (chemical exposure,
neutral), and 3C (chemical exposure, alkaline).
1.3 The specifi ed coating is intended for application by
brush, spray, or roller. It is generally applied over a primer or
intermediate coating.