Fiberglass Cleaning Problems
Stubborn stains: rub one of cleaners recommended by
manufacturer for regular cleaning on stained area; leave
on about an hour; rinse.
Heavy soap scum buildup: occasionally use a mild
abrasive, such as "Bon Ami" or "Bartenders Friend" or
"Soft Scrub"; do not use them for regular cleaning.
Hard water or mineral deposits: occasionally remove
with products specifically designed to remove such
deposits that state on label they are safe for fiberglass;
these are usually mild acids such as "Lime-Away" which
contains some phosphoric acid but is safe for consumer
use; rubber gloves should be worn with applying, and label
instructions followed exactly.
Tough stains such as tar, adhesives, oil paints, etc:
moisten clean cloth with a solvent such as acetone (nail-
polish remover) or paint thinner and rub stained area
lightly until stain disappears; use minimum amount needed.
Do not let solvent go down drain or tough any plastic
items. Wipe off with clean cloth dampened in water. Be
very careful using solvent; do not use around heat or
flame, do not smoke, keep container capped, have plenty of
ventilation.