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Old 19-02-2014, 23:40   #1
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Mold - how to prevent it?

Our boat of 12 years is getting a little less use this year because my father in law used to get on board every week or so and air it out and now he can't. all of a sudden the lounges inside are starting to grow mold all over them. Any thoughts on the best way to prevent this?
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Old 20-02-2014, 00:44   #2
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Re: Mold - how to prevent it?

If "lounges" means cushions and they're already moldy, get them off the boat and clean them now before it gets much worse.

You prevent mold by increasing airflow (add dorados or solar vents), removing moisture (might need another small bilge pump to get rid of small residue, or adding a goldenrod dehumidifier if you've got shore power) etc. Plenty of threads on that.

There are no miracle solutions, just the long standing ones, and if you can't get it warm, dry, with good airflow? You will have a mildew/mold problem. Which gets much harder to fix once it spreads.

If you make sure to stand up all cushions before you leave the boat, that allows greater airflow around them, which also discourages moisture and mildew.
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Old 20-02-2014, 03:38   #3
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Re: Mold - how to prevent it?

Are there any 12volt low power dehumidifiers? What about the silicon gel type products do they work?

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Old 20-02-2014, 04:54   #4
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Re: Mold - how to prevent it?

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You prevent mold by increasing airflow (add dorados or solar vents),
Leaving a Dorado in the boat for a couple of weeks may kill mold but will also kill anyone who boards or at least render them unconcious
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Old 20-02-2014, 05:02   #5
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Re: Mold - how to prevent it?

Sail Delmarva: Borax: Stopping Mildew and Rot on the Cheap... and How the EPA Can Make Everything Complicated

White vinegar is good for cleaning and getting rid of the mould smell.
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Old 20-02-2014, 05:38   #6
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Re: Mold - how to prevent it?

I love the picture of the dorado/mahi mahi. We're headed for the Bahamas and hope to catch one.

Re: Mold. If you are at a dock that has AC power, consider placing a dehumidifier on board. Place it high enough to run the condensate into a sink drain. The other suggestions regarding ventilation with a DORADE vent (OK, a dorade is also a kind of fish....) and cleaning solutions need to be incorporated as the PRIMARY solution. You've got to kill the mold spores.
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Old 20-02-2014, 05:55   #7
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Re: Mold - how to prevent it?

We lived aboard for almost twenty years and my wife has life threatening allergies (including mold). We simply could not afford high humidity. We ran two Heaven Fresh 300C air purifiers 24/7 ... they include UV filter, Hepa filter, Charcoal filter, ion generation and ozone generation all in one compact unit. Of course the ozone was only turned on when we were not onboard. Never had any boat smell or mold. Our boat was 43'. Smaller boat could get a way with one unit.
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Old 20-02-2014, 05:55   #8
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Re: Mold - how to prevent it?

Aside from adding some sort of pelagic fish as others have joked about, you could also add a couple of cheap solar vents to the companionway. But nothing will do as good a job as actually opening the hatches and using the boat regularly.

Btw the Dorado was a typo for the word Dorade, which is a great style of vent in all weathers. Though serious consideration has to made regarding their placement to prevent lines getting tangled around them.

http://www.mailspeedmarine.com/photo...10526645_1.jpg
http://www.planetmarine.com.au/image...LE-500x500.JPG
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Old 20-02-2014, 05:59   #9
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Re: Mold - how to prevent it?

Open up your boat as much as possible. Am always amazed to see boats in a safe marina sealed up and locked tight. Now add hot sun beating down from above and water in bilges and the warm moist air generated will create the hothouse that mold love. I leave companionway hatch open under dodger and leave hatches ajar even at the cost of an occasional raindrop entering. Air circulation is the key here in the humid NE US.
I use a spray bottle with chlorox solution to spray into those areas that cannot be wiped down directly with the same solution and have few fabrics stored aboard and little of value that can be removed by any intruder. I am in a state marina when am in my home waters and it is safe and well patrolled ,so I can can be casual regarding leaving my boat open and of course when cruising I am aboard so intruders are not an issue (I keep my harpoon handy)
Mold is a trigger for an asthma condition that I have been hospitalized for so I have to be extra vigilant or take up golf.
Do I still have mold in the dark recesses of my bilges ? O yeah but I stay ahead of it.
Dem molds ain't scared of no harpoons.
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Old 21-02-2014, 11:02   #10
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On the thread "help too cold...." there is a home made formula that practical sailor rated highly. Sorry I don't know how to link with my smartphone
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Old 21-02-2014, 20:49   #11
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Re: Mold - how to prevent it?

I was told over at the Sailnet forums that mold is a myth and doesn't exist on boats.

Needless to say, I think I'm done with that group over there.
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Old 21-02-2014, 20:56   #12
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Re: Mold - how to prevent it?

Pool salt........about 40lbs will do it. Kills mold mildew all of it. Things already ruined cannot be saved but the beast can be tamed.
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Old 21-02-2014, 21:02   #13
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Re: Mold - how to prevent it?

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I was told over at the Sailnet forums that mold is a myth and doesn't exist on boats.

Needless to say, I think I'm done with that group over there.
No, your denial that mold was a health hazard and your statement that mold was a reality in all boats was denounced as a myth.
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Old 21-02-2014, 22:44   #14
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Re: Mold - how to prevent it?

White vinegar for washing...Clove oli mixed with water in a spay bottle to keep things fresh and mold free.
Use the search feature on the forum. This topic has been covered many times.
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Old 21-02-2014, 23:04   #15
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Re: Mold - how to prevent it?

There is a new marina in Phoenis Ariz that is very low humidity and might solve your mould issues. I think except for the stuff that grows in the bilge with diesel the rest smells kind of like pachouli and reminds me of my yout.
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