Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 02-07-2006, 11:08   #1
Registered User

Join Date: Apr 2006
Location: Wherever at anchor
Boat: Brent Swain Pilot House 36' Steel Sloop
Posts: 167
Genoa black mold

Hello: Just took my spare genny out of a locker and noticed it had lots of black mold on it. How does one get rid of this beasty and in general washing up a sail?
Thanks... Gary

bcguy is offline   Reply With Quote
Old 02-07-2006, 13:26   #2
Senior Cruiser
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,066
Ah yes, google does it better:

DeepFrz is offline   Reply With Quote
Old 02-07-2006, 13:29   #3
Senior Cruiser
Alan Wheeler's Avatar

Cruisers Forum Supporter

Join Date: Dec 2003
Location: Marlborough Sounds. New Zealand
Boat: Hartley Tahitian 45ft. Leisure Lady
Posts: 8,038
Images: 102
Any detergent that has a Sodium Hypoclorite (Chlorine) additive in it. Just ensure it is a weak dilution. Spray it on and leave for awhile and then hose off. This will kill the black mould but may not remove the black stain from the fabric. You will then have to srcub the material to remove as much of the stain as possible. Sometimes you can, sometimes you can't.

For God so loved the world..........He didn't send a committee.
Alan Wheeler is offline   Reply With Quote
Old 02-07-2006, 14:12   #4
Senior Cruiser
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,066
No, no, scruba da stain...
DeepFrz is offline   Reply With Quote
Old 03-07-2006, 16:37   #5
Registered User
Wukong's Avatar

Join Date: Aug 2005
Location: Panama City, FL
Posts: 79
There are commercial products to remove mold and mildew from bathtubs and showers. One product Tilex comes to mind. Spray it on and it should make the mold disappear. You might try it on a small area first to make sure it is compatible with your sail. This stuff works great on tile and grout.
When you strike first, you don't have to get even.
Wukong is offline   Reply With Quote
Old 04-07-2006, 05:06   #6
Registered User
Entlie's Avatar

Join Date: Jun 2006
Location: New Bern, NC (Fairfield Harbour)
Boat: 1994 Prout Manta Catamaran
Posts: 248
Genoa Black Mold

I have never used it on sails, but continuing with Wukong's comments, I use a lot of Scrub Free Mildew (it has to say "Mildew" and has to be "Scrubfree") White bottle, green label with a little yellow on it. You can usually buy it at Wal-Mart. There are lots of Scrub Free Products, but sometimes it is difficult to find the Mildew one. Spray it on and the mildew goes away. Better than any brand I have ever tried.

I have used this on lots of stuff to remove mold and mildew, but I repeat, never on sails. A sail expert would most certainly advise against it for this purpose.

Lynn Stateham - Sailing Catamaran Sunspot Baby
"Never a ship sails out of a bay
but carries my heart as a stowaway."
-Roselle Mercier Montgomery"
Entlie is offline   Reply With Quote
Old 04-07-2006, 12:32   #7
Moderator Emeritus
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 29,380
Images: 240
All of the commercial “Mildew” cleaning products are likely to be based upon Chlorine Bleach (Sodium Hyperchlorite - NaOCl)

General Sail Cleaning:
Use a soft scrub brush and a mild detergent. Detergents with a neutral ph factor don’t generally “set” certain types of stain. Always scrub in line with seams. After scrubbing, rinse sail with plenty of warm water to remove all soap before laying flat to dry.

Mildew Removal & Treatment:
- Take the sails ashore and brush off the mildew. Then apply a detergent to the stain and launder.
- Soak the sail in a solution* of 0.15 to 0.20% bleach and cold water, for about two to 4 days.
- A 1% solution of sodium thiosolphate (photographer’s hypo) should remove all chlorine traces.
- Rinse and then air dry in direct sunlight.

* “Clorox”, and other household bleach products are usually 5.25% NaOCl, so have to be mixed at about 30 to 1 with water (1 part Clorox + 30 parts water). A higher ratio may work a little faster, a lower ratio a little slower.

1. Never mix liquid chlorine bleach and ammonia, which will produce toxic fumes
2. Clorox should NEVER be used on:
- Aramids (Kevlar, Twaron). If you aren’t sure, these are of generally yellow or brown color and will always be used in a laminated construction.
- Nylon. This is the lightweight, often colored material used in many spinnakers.
3. Clorox can generally be safely used on:
- polyester (Dacron), Spectra/Dyneema, Pentex, carbon, and Vectran.

Lysol is a fungicide that when sprayed on the sail will kill existing spores and inhibit any additional growth. After the organism is killed, most of the stain can be removed by soaking (not scrubbing) in a fungicide for 12 or more hours. Always rinse thoroughly to ensure there is no bleach residue left on the sail.

The original “Oxygen Bleach” is a mixture of Non-chlorine Bleach (or Baking Soda) and Hydrogen Peroxide solution.

Other Alternates: Instead of bleach or Lysol; you can use salt and lemon juice, detergent, ammonia, white vinegar, washing soda (or some combination of these ingredients) and let the fabric dry in direct sunlight.

Always finish any stain treatment by washing and rinsing the sail with fresh water.

Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"

GordMay is online now   Reply With Quote

Genoa, mold

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Genset Review : Pramac s5500 ssullivan Electrical: Batteries, Generators & Solar 43 17-01-2009 10:44
Mould Sonosailor Construction, Maintenance & Refit 18 12-12-2007 08:05
This Can't Be Good.... Black Smoke & Soot markpj23 Engines and Propulsion Systems 17 04-06-2006 06:35
Genoa tracks? bmiller General Sailing Forum 15 12-04-2006 16:02
"La Superba" Genoa CaptainK Europe & Mediterranean 0 10-04-2006 00:01

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:47.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.