關于玻璃鋼船舶修補的顏色問題

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Color Matching
The hardest part of a repair to the surface of a fiberglass boat is matching the color. Professionals who do gelcoat repairs daily still have difficulty getting a perfect match. Even "factory" colors don't match exactly after a boat has been in the sun for a few years.

White has the significant advantage of being fairly easy to match, and once a small repair is buffed out to a gloss, shading differences will be unnoticeable. Matching colored hulls is somewhat more challenging.

A color-sample card from your local paint store that matches your hull can provide valuable help. Ask the store clerk the formula; they custom-mix the color by adding tints to a white base. The formula may call for a half-dozen different tints, but the important ones are those specified in the largest quantities. You can use the tints in your repair kit to approximate the formula.

Always color gelcoat paste before you add the catalyst. Put exactly one ounce of paste into a mixing cup and add the tints a drop at a time. Keep track of the number of drops of each tint. When the color looks close in the cup, touch a drop of the mix onto the hull. Make needed adjustments until you are satisfied with the match-don't expect perfection-then write down the formula so you can duplicate it for the rest of the paste.

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Darker colors are more prone to fading because they absorb more
of the sun’s ultraviolet rays and retain heat. Whites and off-whites
may discolor or yellow with direct exposure to sunlight.
If your gelcoat finish has started to fade or discolor, and waxing
will not restore the original finish, compounding by hand with
DEGA’s Fiberglass Restorer and DEGA-WAX will remove oxidation
and chalking. Its blend of waxes will restore shine and retard
UV damage.
Compounding with Mirror Glaze Machine Cleaner #1, applied with
a low speed buffer will make quick work of large areas.
Never place a buffer in such a manner as to let the buffing pad
touch the ground. The pad will pick up dirt which can cause deep
scratches in the gelcoat finish.
After machine compounding, wash the surface using clean water
and then dry. Apply a good coat of wax. Do not apply compound or
wax in direct sunlight.