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Removing Mold and Mildew From Boat


We need to clean mold/mildew off of our boat. It has vinyl interior and a fiberglass outer. It is everywhere due to a cut in the tarp we did not know about! I need a strong but safe suggestion. Please help!

Carrie from San Diego, CA



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By rod (Guest Post) 04/15/2008

Get a spray bottle and put a bleach mixture in it.

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By .deanj (Guest Post) 04/15/2008

Mold can usually be killed with a mixture of bleach and water. One part bleach to 3 parts water. If needed a stronger solution up the bleach and reduce the water. Spray a small amount on the mold to see if the mold is killed. Be aware bleach on metal such as copper and brass can be etched into the metal and will discolor it. Rinse with water as soon as the mold is dead.

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By Barbara 22 04/16/2008

Bleach works but so does a product called Oxyclean. We buy it at Costco.

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By patti r 12 04/19/2008

Hello Carrie,

Odoban, kills odors, germicide, mold, mildew and is sold in Sam's product has a strong Pine Sol smell.

Concrobium kills mold and mildew sold at Home Depot product has almost no smell

Good Luck Patti

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By Mike (Guest Post) 04/26/2008

There is a great environmentally safe cleaner that removes mold and mildew from wood, plastic, composite, cloth, vinyl, aluminum, brick and more. You can see info at

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By (Guest Post) 06/22/2008

Never oil vinyls because oil will make the vinyl hard. For proper cleaning, sprinkle baking soda or vinegar on rough damp cloth. then, wash with a very mild dish washing soap.

Mildew dry in the sun after moistening with lemon juice and salt. Treat by adding 1/2 cup of liquid lysol to the wash water. On leather, sponge with equal amounts of water and rubbing alcohol.

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By Glenn Bridges 1 08/04/2009

Do not put clorine bleach on a fiberglass boat! It will promote oxidation and dull the finish in a hurry! There are mildew removal products that are safe for humans and the environment and are available at the boat yard or West Marine or Overtons for just a few bucks. The products will remove the stain and will protect the finish on the vinyl and the gelcoat of the boat. Scrubbing with a Mr. Clean Magic Sponge does a really good job on mold removal from hard surfaces and leather and vinyl cleaner and conditioner will normally remove the stains from the seats.

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By Mikki 1 08/19/2010

What worked for me was using Clorox SoftScrub. I rubbed it on with rubber gloved hands and let it sit a few minutes, then rinsed off with hose, worked quite well.

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