How to Guide

TECHNICAL DATA
MAR-02
MARINE COATINGS
PRIMER FOR WOOD & FIBERGLASS
Form: GDH-648
Rev.: 011315
1
].DESCRIPTION AND USES .
Rust-Oleum
®
Marine Coatings Primer for Wood &
Fiberglass is suitable for use as a base coat whenever the
surface to be painted is aged, cracked, checked, pitted or
rough. It can be applied to fiberglass, wood and previously
painted surfaces. Rust-Oleum Marine Coatings Primer for
Wood & Fiberglass dries quickly and is easy to sand. It
provides a smooth base that allows Rust-Oleum Marine
Coatings Topside Paint to dry to a uniform gloss and
appearance. DO NOT USE below the waterline.
.PRODUCTS .
1-Quart Description
207014 Primer for Wood & Fiberglass
.PRODUCT APPLICATION .
SURFACE PREPARATION
All surfaces must be free of dirt, loose paint, oil, grease,
wax, soap and any other foreign matter. Clean painted
areas by washing with a solution of 2 cups household
ammonia per gallon of water and rinse well. Remove
existing mildew with household bleach. Do not mix
together ammonia and bleach. Rinse thoroughly and
allow to dry.
BARE FIBERGLASS - The entire surface, regardless of
age, must be thoroughly washed with a fiberglass cleaner
to remove all traces of mold release agents and wax.
Sand the gel coat with 80-120 grit sandpaper to create a
dull, frosty appearance. Wipe the surface with mineral
spirits or a tack rag to remove sanding dust and residue.
Rough surfaces or imperfections should be repaired. Fill
all nicks and gouges with a fiberglass repair compound
and sand smooth when hard. Remove sanding dust with
mineral spirits or a tack rag.
BARE WOOD – Sand the surface smooth with 80-120 grit
sandpaper. Wipe the surface with mineral spirits or xylene
to remove sanding dust and residue. Fill all screw heads
or small holes with a wood repair compound Sand smooth
and solvent clean. Apply a coat of Rust-Oleum Marine
Coatings Spar Varnish thinned 10% with mineral spirits to
penetrate and seal the porous grain. Allow to dry 24 hours
and sand smooth with 150 grit sandpaper. Apply one full
coat of Primer for Wood & Fiberglass. Allow to dry four
hours and sand smooth with 150 grit sandpaper. Repeat
Primer application as necessary to achieve smooth
surface. Sand the final coat of Primer with 220 grit
sandpaper then finish with two coats of Topside Paint.
PRODUCT APPLICATION (cont.) .
BARE WOOD (cont.) - Bare wood that has been
previously coated with epoxy must be thoroughly scrubbed
with an ammonia/water solution, rinsed thoroughly, then
sanded with 120 grit sandpaper and solvent cleaned.
Follow with a coat of Topside Primer to smooth the
surface and provide a uniform base. Sand and solvent
clean and then proceed with the first coat of Topside Paint.
PAINTED SURFACES - Old paint is in good, sound
condition should be washed thoroughly with mineral spirits
or xylene. Sand smooth with 80 grit sandpaper and
solvent wipe with mineral spirits or a tack rag to remove
residue. Apply a coat of Rust-Oleum Primer for Wood &
Fiberglass. If the old paint is in poor condition, remove it
with a paint and varnish remover or by sanding.
APPLICATION
Apply when air (ambient) temperature is between 50-90°F
(10-32°C) and the relative humidity is below 85%. Do not
apply on extremely humid days (90% humidity or above)
or when rain is threatening. Do not apply in the late
afternoon outdoors as the wet film may be adversely
affected by dew. When working in cooler temperatures, be
sure the air and surface temperatures will remain at or
above 50°F for at least 4 hours after application.
Thoroughly agitate to ensure any settled pigment is re-
dispersed before use. Apply with a high quality brush,
roller, conventional or airless spray. For brush or roller
application, apply full strength. In hot weather, thin with
5% mineral spirits to maintain a wet edge. On large,
smooth surfaces, apply using a short nap or foam roller
cover followed immediately by back brushing. If using
conventional spray application, thin 5% with xylene and
apply one thin, even coat. After four hours, lightly sand
with 150 grit sandpaper and apply a second coat. Always
wipe with a tack cloth immediately after sanding to remove
any airborne dust that may have settled on the surface. If
two or more coats are applied within four hours (at 70°F)
or excessive wet film is applied (greater than 5 wet mils)
these conditions will lead to insufficient drying of the paint
and will yield soft paint films. If using airless spray, apply
using 1,600-2,400 psi with a 0.013 -0.017 inch tip. If
necessary, thin up to 5% with xylene.
DRY TIME
Dry and recoat times are based on 70°F and 50% relative
humidity. Allow more time at cooler temperatures Dries to
the touch in 1 hour at 70°F and can be recoated after 4
hours. Full cure is achieved at 72 hours.
CLEAN-UP
Clean up application tools and equipment with xylene.