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using diluted bleach on fiberglass???

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  • using diluted bleach on fiberglass???

    ive done this, but is there some long term effects from using a bleach solution to clean the fiberglass of stains & mildew?if so i need to quit.


  • #2
    Re: using diluted bleach on fiberglass???

    2K I'm a bleach freak so I'm going to be following this post! I use it on stone..wood, brick and most everything else to kill mold and clean.Topmason isn't allowed to read this Most bleach in the stores in only like 6 or 7% so I would hate to see or get near in in 100% formLink

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    • #3
      Re: using diluted bleach on fiberglass???

      Although I question his sanity sometimes, I have a friend who uses a muriatic acid & water mix on his fiberglass hull. It takes the 1/4" layer of slime and crap right off the hull and makes it look brand new. No clue whatsoever if this is detrimental to the hull or not, but after 10 years, nothing appears to have gone wrong.

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      • #4
        Re: using diluted bleach on fiberglass???

        Bleach wouldn't normally be my choice but there are many frp hot tubs and swim spas out there using chemicals. May be more diluted, but it works for them....just a Thought

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        • #5
          Re: using diluted bleach on fiberglass???

          No problem using bleach on fiberglass as long as you rinse it well and after it dries you must rinse it again.the best thing is to wax it after it has been rinsed the 2nd time.there are many products especially for fiberglass stains,though nothing is cheaper than a little bleach.What exactly are you cleaning with it???Charlie

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          • #6
            Re: using diluted bleach on fiberglass???

            Boat manufacturers recommend against using cleaners containing bleach.I've heard arguments on both sides but the fact remains that it's not recommened... So I don't use it.

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            • #7
              Re: using diluted bleach on fiberglass???

              On/Off bottom cleaner is primarly sulfuric acid.A little bleach won't hurt the glass.

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              • #8
                Re: using diluted bleach on fiberglass???

                i use a diluted bleach and car soap solution to clean boat of dirt, birds, mildew, fish (when i can keep boat running) etc.i was reading in another post where it wasnt recommended.so i just wanted to make sure.the boat looks great after it is cleaned, i usually do it on a rainy day.

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                • #9
                  Re: using diluted bleach on fiberglass???

                  I have had good luck making my own brew of pool Chlorine and pool algae killer diluted with a few gallons of water. I use the silver algae killer because it seems to work the best and a few ounces will do a whole boat. It kills Everything that grows on fiberglass. I put it on with a garden pump sprayer and then then pressure wash the boat with clean water about an hour later. I has never harmed any glass or gelcoat and does a great job. It makes sense because they use the stuff on gel coated Hot tubs that are basically the same thing as a boat is made of.

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                  • #10
                    Re: using diluted bleach on fiberglass???

                    I'm sure every one knows this, but it is worth repeating here. Never mix chlorine bleach with any product containing ammonia, especially if you are working in an enclosed space. You might end up dead from chlorine gas.Jinx

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                    • #11
                      Re: using diluted bleach on fiberglass???

                      on/off for the hull is the best choice out there. no stain stands a chance...as for the inside and nonskid, i use soft scrub with bleach. the best i've been able to find. i haven't noticed any problem with the small amount of bleach in it. i doubt i would use straight bleach on my boat, but not sure why.
                      2002 Wellcraft 290 Coastal
                      Twin 2002 Yamaha F225s

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                      • #12
                        Re: using diluted bleach on fiberglass???

                        make sure you rinse well Chlorine Bleach can corrode metal.

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                        • #13
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                          Re: using diluted bleach on fiberglass???

                          I use a bleach/dish washing soap solution for the pre-season cleaning, prior to waxing. Just remember, bleach and/or dish washing soap will remove wax.

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