B. Weathering Effects On Gel Coat - Four winns 248 Vista Owner's Manual

Apply wax once or twice a year to maintain gel coat
lustre. Read the label before using any product. Make
sure product is formulated for gel coat surfaces. Also,
consult a Four Winns dealer for their recommendations.
NOTICE
Do not use carnuba based waxes. This type of
wax yellows over time and makes the fiberglass
appear yellow.
Waxing decks, cockpit floors or other walking
areas is not recommended. Waxing will pro-
duce a very slippery surface, especially when
wet. Wax may also buildup in the skid-resistant
surfaces. Be sure all persons wear deck shoes
while aboard the boat. Footing will be improved
and feet will be protected from accidental cuts
and bruises.
A darkening or discoloration of the skid-resistant surfac-
es can sometimes occur as a result of wax buildup. Expo-
sure to the sun and elements can turn the wax darker, or
occasionally can cause it to become flaky or powdery.
To remove, use fine rubbing compound and a low rpm
buffer (1200 to 2000 rpm). Apply light pressure and keep
the buffer moving at all times to prevent heat build- up.
Read the directions before using any equipment.

B. Weathering Effects on Gel Coat

Weathering occurs from direct sunlight, water, chemicals,
and dust. Some of the terms below describe the changes
that can occur to the gel coat surface.
Chalking is a result of the gel coat's top surface being
broken down into an extremely fine powder. When this
happens, the color whitens. The chalk is present on the
surface only.
Fading is the uniform change in color. This happens when
the actual pigments have changed color, especially from
excessive chalking, or when the gel coat has either been
stained or bleached by something.
Yellowing is gel coat which has a yellow cast and strea-
king usually deals with a stain or contact with another
surface.
Gloss refers to the shine of the surface. This can change
from sanding action, chalk, residues, or exposure.
Vista™ Owner's Manual
™
Blistering refers to a condition in which the unprotected
gel coat surface below the waterline has absorbed water
and formed bubbles. See Section P-5 for additional infor-
mation.
Follow the instructions below for boats that have weath-
ered and chalked.
1. Wash.
2. Wax. If this does not work, then use a fine rubbing
compound. If this does not work use 400 or 600 wet
or dry sandpaper, followed by fine rubbing compound
and wax.
When using wax or fine rubbing compounds, make sure
to read the label and follow the directions. Some helpful
tips are listed below.
1. Avoid working in direct sunlight. This dries out the
wax or compound, and can stain the surface.
2. Use clean pads or cloths to apply a thin coating of
wax or rubbing compound to a small area such as
three feet by three feet. Remove any excess, and
then rub the area with a buffing pad, or power buffer.
Apply pressure only as necessary to restore the sur-
face finish. Applying too much pressure or buffing in
one place too long can permanently damage the sur-
face.
3. After applying compound, always follow with waxing.
NOTICE
If using a power buffer, use a low RPM buffer with
light pressure. Keep the pad wet and the buffer
moving at all times to prevent heat buildup.
NOTICE
To prevent gouges, uneven areas, or other dam-
age from occurring, DO NOT use a power or belt
sander when sanding. For best results, block
sand the gel coat.
C. Stains
Stains can appear anywhere on the exterior of the boat
and may be a result of contact with tar, plant sap, leaves,
rust from metal fittings, and other materials. Surface
stains may be removed with hand dish washing soap,
mild cleansers, or some household detergents. DO NOT
use chlorine or ammonia products. These products can
affect the color of gel coat. Commercial car washes use
strong cleaners and should be avoided.
Section P
Page 3