7-4
CHAPTER 7
Use a mild detergent such as dishwasher powder or liquid. Do not use
automatic dishwasher detergent. Avoid any kind of alkaline cleaners
such as trisodium phosphate (TSP), abrasives, bleaches and ammonia.
For best results use cleaners that are recommended for fiberglass.
WIRE BRUSHES, SCOURING PADS, OR OTHER
ABRASIVE TYPE MATERIALS AND SOLUTIONS
SHOULD NEVER BE USED ON THE HULL
OR DECK OF YOUR BOAT.
THEY CREATE SMALL SCRATCH MARKS
THAT WILL COLLECT MARINE GROWTH
AND OTHER FOREIGN MATERIALS.
It is recommended that you wax the gelcoat surface twice yearly to
prevent loss of gloss and to protect the finish. Use only waxes for
fiberglass and follow the label instructions. Apply a 3' x 3' section at a
time using clean applicator cloths or a buffing bonnet. When a haze
develops, use a power buffer at low speeds (1200-2000 rpm) to re-
move the haze. Keep the buffer moving to avoid heat buildup. The
power buffer is very efficient at removing contaminants from gelcoat.
Never wax gelcoat in the direct sun.
When the washing and waxing as recommended does not restore the
shine it may be necessary to use a fine rubbing compound. Do not
apply rubbing compound in direct sunlight. A power buffer at low
speed does an excellent job to remove impurities from the gel coat
that cause dulling. Use light pressure and keep the buffer moving. Re-
wax after compounding to buff the surface.
“Hairline cracks” or “spider webbing” could develop in the gelcoat
surface of a hull or deck. This can be caused by impact or other
factors. Small air pockets or gouges may also occur through normal
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