|
|
08-10-2019, 06:24 AM
|
#1
|
Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,834
|
Mold Prevention Chemical
So I get mold growing on the supply vents from 2 of my 3 air conditioners. Not sure why one grows greenish and the other black mold, but not really relevant. The mold is only right at tthe vent, not in the supply hose or AC unit. Obviously I clean it up, but would like some sort of chemical / cleaner that would prevent mold growth for the rest of my boat ownership (I'm prepared to accept a shorter duration). The vents are teak. Any recommendations?
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
|
|
|
08-10-2019, 06:28 AM
|
#2
|
Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,146
|
I have seen research that vinegar is good at killing and preventing mold, better than bleach especially on porous surfaces....and is less harsh.
|
|
|
08-10-2019, 06:36 AM
|
#3
|
Senior Member
City: PNW/Seattle-ish
Vessel Name: M/V Peter Iredale ;)
Vessel Model: rusting hulk
Join Date: Feb 2018
Posts: 128
|
Quote:
The vents are teak. Any recommendations?
|
Did you soak or wipe the wood with any wood oil or treatment?
Some of them are mold magnets in the right environment. Pure tung oil, while great for wood in most cases, does that, as well as other wood oils.
|
|
|
08-10-2019, 07:39 AM
|
#4
|
Guru
City: Quebec
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 4,375
|
Here you go
https://www.concrobium.com/
I use it at home and I am happy with it.
L
|
|
|
08-10-2019, 07:56 AM
|
#5
|
Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,146
|
Quote:
Originally Posted by Lou_tribal
|
Lou, that stuffs MSDS shows trisodium phosphate as it's active ingredient if I am reading correctly....just in a premixed liquid.
So it's premixed TSP cleaning powder I guess. Not sure how it compares price wise.
Ted - a little researched showed this as a good preventer too, some recommend adding the powder to paint and other coatings to help prevent mold.
|
|
|
08-10-2019, 08:09 AM
|
#6
|
Guru
City: Coupeville Wa.
Vessel Name: Pacific Myst
Vessel Model: West Bay 4500
Join Date: Oct 2015
Posts: 2,412
|
Things I have used with varied success on moldy wood,
Bleach. The change is instant as the visible part of the mold body is killed and bleached. The benefit is often temporary with the mold coming back quickly. I think this is because the bulk of the mold organism is left intact and alive just under the surface.
Vinegar. The change from moldy to clean appearance is slower than bleach requiring some scrubbing. The return of the mold is also slower. The main benefit to you is it’s less harmful to you.
Alcohol. Rubbing or denatured, not scotch. Much the same as Vinegar.
Borax. The old fashioned soap. Inhibits future growth of mold. Wash, scrub the wood with Borax wipe it off, not quite completely leaving a light film, just let that dry.
I rented a home years ago that had a terrible mold problem in the wood window frames and sills. The full technique was:
Soak with bleach.
Scrub with vinegar and let dry.
Soak with alcohol and let dry.
A soaking wash with Borax, let it almost dry, gently wipe up any visible residue.
I didn’t just pull this process out of my back pocket. It is based on a piece I read decades ago on wood preservation by the navy on minesweeper hulls. I no longer have that print out so I’m working from memory. According to the author the navy used glycol and borate. The glycol soaks into the wood and desiccates the fungus body (dry rot stuff) and the borate keeps it from growing back. My thinking is that fungi and molds are similar enough that the wood rot treatment should work on mold as well. And that I don’t want glycol where I live. And that borax soap is readily available and contains a salt of boron.
Google the key words “wood preservative glycol borax” and you’ll get more links than you have time to read.
As for how did it work? Well, mostly, sort of. I had to repeat the process several times before I got the mold knocked back enough to relax. If it were my house I’d have removed the infected wood and replaced it much the same as planking destroyed by “dry rot” has to be replaced.
Here’s a link disucssing the effectiveness of borax on mold “ Does Borax Kill Mold”
If the mold on your teak vents is severe the best option may be to replace the vents.
|
|
|
08-10-2019, 09:24 AM
|
#7
|
Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,834
|
Removing the mold hasn't been an issue, Scotchbrite sponge, soapy water and elbow grease. Preventing the reoccurrence is my goal. Replacing the teak vent on one supply real isn't an option as its part of the built in seating.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
|
|
|
08-10-2019, 10:17 AM
|
#8
|
Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,146
|
Maybe try a tiny spot of water based polyurethane with a bit of TSP mixed in...I would only do it based on some more research...but a look and try might be worth it.
|
|
|
08-10-2019, 10:37 AM
|
#9
|
Guru
City: Columbia City, OR & Mulege, BCS
Vessel Name: Imagine
Vessel Model: Farrell 34
Join Date: Oct 2015
Posts: 848
|
O C, take a look at this stuff...
https://www.rustoleum.com/product-ca...-mildew-killer
Moldex. I have had good success with this stuff on my boat teak and my casita in Baja cleaning up after floods. This stuff can kill the hyphae that are growing in the teak and cause the reoccurance.
Generally, the black molds are "bad." Suggest a respirator for cleanup of that stuff.
Another moldy old thread on this...
http://www.trawlerforum.com/forums/s...ase-28513.html
|
|
|
08-10-2019, 11:02 AM
|
#10
|
Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,185
|
Look at Obex. They make a treatment to remove the mold and a treatment to prevent it from coming back.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
|
|
|
08-10-2019, 12:58 PM
|
#11
|
Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
|
Tea Tree Oil.
Sounds like a concentration of water at the place where the mould grows.
Tea Tree Oil is expensive and only available in small bottles. I bought some in one of my most un-favorite stores .. Wall Mart. About $1.00 an ounce .. I think.
My wife makes a mixture of vinegar, baking soda and hydrogen peroxide. Takes black cap rails back to normal wood.
__________________
Eric
North Western Washington State USA
|
|
|
08-10-2019, 01:08 PM
|
#12
|
Guru
City: Upstate,SC
Vessel Name: Shipoopi
Vessel Model: derilic sailboat
Join Date: May 2012
Posts: 2,884
|
Quote:
Originally Posted by O C Diver
So I get mold growing on the supply vents from 2 of my 3 air conditioners. Not sure why one grows greenish and the other black mold, but not really relevant. The mold is only right at tthe vent, not in the supply hose or AC unit. Obviously I clean it up, but would like some sort of chemical / cleaner that would prevent mold growth for the rest of my boat ownership (I'm prepared to accept a shorter duration). The vents are teak. Any recommendations?
Ted
|
I don't know if this will work for you. I use it on my buildings and houses in places where I know I will have mold probelms. It sees to work well. It can be bought at most home stores.
https://www.amazon.com/Rust-Oleum-27...language=en_US
__________________
This is my signature line. There are many like it but this one is mine.
What a pain in the transom.
|
|
|
08-10-2019, 02:22 PM
|
#13
|
Guru
City: Brookline, NH
Vessel Name: Shalloway
Vessel Model: Defever 44, twin Perkins
Join Date: Sep 2013
Posts: 2,260
|
Practical Sailor did a test of mold and mildew cleaners/preventers and came up with their own formula that they said worked as well as the best store bought preparations. It's very inexpensive.
1 quart hot water
1 tablespoon baking soda (sodium bicarbonate)
2 tablespoons washing soda (sodium carbonate)
2 tablespoons trisodium phosphate (TSP)
I mixed some up and have used it in a few places. Now to see how well it keeps the mold from returning.
Ken
|
|
|
08-10-2019, 08:04 PM
|
#14
|
Senior Member
City: New Orleans
Vessel Name: Stella
Vessel Model: Seaton 56
Join Date: Sep 2017
Posts: 272
|
An internet search for fungicides formulat d for paint will provide several possibilities. I just ordered chlorothalonil (Daconil) to spray on our deck ceiling and posts. With high temperatures and humidity on the Gulf Coast mildew grows rampant. Not sure if it will work for my application but probably will. Check out internet DIY pest control sites which offer more choice than local hardware stores.
|
|
|
08-11-2019, 12:35 AM
|
#15
|
Guru
City: Port Townsend Washington
Vessel Name: " OTTER "
Vessel Model: Ocean Alexander Europa 40
Join Date: Nov 2009
Posts: 2,378
|
Quote:
Originally Posted by kchace
Practical Sailor did a test of mold and mildew cleaners/preventers and came up with their own formula that they said worked as well as the best store bought preparations. It's very inexpensive.
1 quart hot water
1 tablespoon baking soda (sodium bicarbonate)
2 tablespoons washing soda (sodium carbonate)
2 tablespoons trisodium phosphate (TSP)
I mixed some up and have used it in a few places. Now to see how well it keeps the mold from returning.
Ken
|
i started using this formula a year ago and so far it seems to do the trick
Hollywood
|
|
|
08-11-2019, 09:30 AM
|
#16
|
Guru
City: Jacksonville
Vessel Name: Alzero
Vessel Model: Hatteras 63' CPMY
Join Date: Apr 2017
Posts: 1,548
|
We use dehumidifiers, keep the water out of the air and mold won’t grow. It is also more comfortable below.
|
|
|
08-11-2019, 04:39 PM
|
#17
|
Guru
City: Powell River, BC
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 4,075
|
I've used Moldex with good results in my lockers when I bought the boat. More mildew than mold though.
|
|
|
08-16-2019, 01:43 PM
|
#18
|
Member
City: San Pedro
Join Date: May 2016
Posts: 17
|
+1 on the Practical Sailor formula. Works very well. Wash off visible mold, letting it soak if necessary, then spray on light coat and let it dry. Best stuff I've used.
|
|
|
08-16-2019, 04:10 PM
|
#19
|
Member
City: Newport Beach
Join Date: Jun 2017
Posts: 8
|
mold remover
I have the same problem...I run a commercial O-Zone Generator that cost 160.00 . It took care of the problem and works to keep the whole boat mold free and removes all odor's. I use it once a month. BE CAREFUL to" air the boat out" before you enter. Will cause lung damage if you breath in. Jp
|
|
|
08-16-2019, 08:37 PM
|
#20
|
Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
|
Quote:
Originally Posted by deepblue
I have the same problem...I run a commercial O-Zone Generator that cost 160.00 . It took care of the problem and works to keep the whole boat mold free and removes all odor's. I use it once a month. BE CAREFUL to" air the boat out" before you enter. Will cause lung damage if you breath in. Jp
|
If I’m not mistaken, O3 can also damage many kinds of rubber type products. So it could be a problem in a boat.
Rather than killing mold and mildew, I’ve had the best success with just getting rid of moisture. I have dehumidifiers for years in my boats and it works great. However, I’m always on shore power so I can do that. Currently, I’m using two small Peltier type of dehumidifiers on my boat. In the past I have used a compressor type of dehumidifier and just set one on the galley counter and have it drain into the sink.
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Trawler Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|