MIL-HDBK-1110
4.4.4.1
Epoxy Systems. Two coats of epoxy will provide long-
term protection to galvanizing in interior service, as will one
coat of epoxy and one coat of aliphatic urethane to galvanizing
in exterior service.
Epoxy Coating System for Exterior Galvanizing
Surface
Preparation
Primer
Topcoat
SSPC SP 1
one coat MIL-P-24441
one coat MIL-C-85285
Formula 150
Type II
3 mils dft
2 mils dft
Epoxy Coating System for Interior Galvanizing
Surface
Preparation
Primer
Topcoat
SSPC SP 1
one coat MIL-P-24441
one coat MIL-P-24441
Formula 150
of desired color
3 mils dft
3 mils dft
4.4.4.2
Waterborne System for Galvanizing. Two coats of latex
paint will provide a pleasing appearance and good protection to
galvanized steel in moderate environments. They are easy to
apply.
Waterborne Coating System for Galvanizing in Moderate Environment
Surface
Preparation
Primer
Topcoat
SSPC SP 1
one coat TT-E-2784
one coat TT-E-2784 *
1.5 mils dft
1.5 mils dft
* Other commercially available acrylic latex systems will also
perform well.
4.4.5
Recommendations for Aluminum. Aluminum surfaces
corrode very slowly in moderate environments. They may be coated
to provide color or additional protection, particularly in severe
environments. Epoxy and epoxy/urethane systems perform well in
interior or exterior service, respectively. Alkyd systems
usually require surface pretreatments containing toxic materials.
Because aluminum surfaces are relatively soft, they
should not be cleaned by blasting with conventional abrasives or
grinding to avoid damage. Any grease or oil should be removed by
solvent or steam cleaning (SSPC SP 1). Dirt and other loose
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