Anti-Fouling Protective Coating - Columbia Coronado 25 Owenrs Manual

3.6 Anti-Fouling Protective Coating System
This specification covers sandblasting and the application of an
International Intergard coating No. 4424/4423 and
anti-fouling paint containing Biomet coating to the keel and underwater hull
areas. It should be used on all Kit Boats that have outside ballast and is
optional on boats with inside ballast.
1. Cast Iron Keel
a) Grind entire surface of keel to white metal.
"White metal" is defined as a surface with
a gray-white uniform metallic color, slightly
roughened to form a suitable anchor pattern
for coating. The surface should be free of
visible mill scale, corrosion products, paints,
or other foreign material. It is the intent
of this specification to have a surface conforming
to Steel Structures Painting Council Surface
Preparation Specification #5.
b) All sand and dust residue is to be removed from the surface
before coating is applied.
c) The ground surface must be primed before re
rusting occurs. For outdoor locations, this
normally means that the steel should be primed
within a period not exceeding six hours after
cleaning. For indoors, low humidity locations,
longer periods may be used. The steel should
be re-ground if rain or condensed water wets
the surface prior to priming. (Priming should
not be done before the epoxy filler is applied.)
2. Epoxy Filler
Apply epoxy filler, where needed, to the dry, white metal surface
and trowel smooth. 3. Priming
a) Apply one coat of Intergard 4424/4423 to the dry, white
metal and the epoxy filled surfaces. The primer should be
thinned 5% and applied to about a thickness of 1-1/2 mil.
b) For additional information on application procedures,
cleaning of equipment and handling precautions, reference
is made to a booklet supplied by International Paint
Company.
Tri-Lux T.B.T.O.
SECTION 3
Page 5