Fiberglass term as used in boats is really Fiber reinforced Plastic (FRP).
And the plastic can be a polyester resin. But if bleach was that degrading,
most hottubs would be bad in 12 years, and my pool sweep would have to be
replaced a lot more often than 15 years

"Mr Wizzard" wrote in message
...

"Real Name" wrote in message
...
Fantastic is a great cleaner for vinyl, and is recommended by many boat
builders. Bleach will degrade vinyl and the stitching thread.

Bleach will degrade fiberglass, but if it is only used once a year you
will
probably not notice it.

http://www.newton.dep.anl.gov/askasc.../chem00615.htm

No offence, but I don't buy it. First off, he says bleach will
attack polyester fibers. Fiberglass is just that: fibers of "glass",
not 'esters' (or poly-esters). And I don't know of any resin
used on fiberglass that contains "polyester", but who knows.
Chlorine bleach is used in swimming pools, and swiming pool
related apparatus all the time. As I understand it, it will attack
cotton, paper products, and other "organic" matter, thus why
it is a good cleaner of mold, moss, blood, but bad on cotton,
cloth, paper, etc. BTW, the sticthing on boat upolostry isn't
cotton based, is it ? I'd want more, verifiable proof of what
this guy says before believing it. Maybe a materials safety
handling sheet on bleach will be more helpfull ?




"Ignoramus15786" wrote in message
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I have had incredible success using fantastic on everything except I
have not tried using it on vinyl.

i