anti mildew treatment - SailNet Community

   Search Sailnet:

 forums  store  

Quick Menu
Boat Reviews  
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Hatches and Portlights
Interior And Galley
Marine Electronics
Other Items
Plumbing and Pumps
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here

Go Back   SailNet Community > On Board > Boat Review and Purchase Forum
 Not a Member? 

LinkBack Thread Tools
Old 11-27-2010
Senior Member
Join Date: Jul 2008
Location: Oregon
Posts: 151
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
MtHopeBay is on a distinguished road
anti mildew treatment

My mainsail cover that came with my good old boat smells like a hospital. A disinfected one. I've had it two seasons and it still smells that way, has not mildewed and is easy to clean. What is that treatment or material? I wish I had it in my sails. I just finished scrubbing my mainsail and I couldn't get all the mildew stains out.
Cal 36 #54
Ida Rose
Reply With Quote Quick reply to this message Share with Facebook
Old 11-28-2010
RichH's Avatar
Senior Member
Join Date: Jul 2000
Location: Pennsylvania
Posts: 3,032
Thanks: 13
Thanked 93 Times in 85 Posts
Rep Power: 15
RichH will become famous soon enough
Mike -
Most hospitals , etc. use a 'quatenary ammonia' compound for disinfection ... but you shouldnt be breathing it - dangerous!!!

For woven white dacron sails, the best for 'mildew' removal is to obtain a sodium silicate detergent (a product called Tuff-eNuff used to be carried by West Marine, so perhaps you can 'special order' it from them. Tuff-eNuff is manufactured by Wallace & Sons, Inc., St. Augustine, Florida ... do websearch and call them for a distributor in your area - expensive !!!!!)

Spray on the sodium silicate based detergent, lightly scrub to spread the detergent and immediately cover the sail with a plastic tarp to prevent dry-out. This product will dissolve the mildew cells ... so it takes 'soak time' to do the dissolving job. Remove the tarp and scrub with a long handled 'soft' brush applying additional detergent as necessary to 'keep wet'. Recover and let soak again. Rescrub/spray any remaining mildew. THOROUGHLY rinse ALL the detergent out of the fabric ... rinse several times until NO detergent remains.

Then, get some oxalic acid crystals (wood bleach) from paint or hardware store and mix into HOT water. You keep adding the crystals to the HOT water until no more crystals dissolve into the water (a saturated solution). A quart or two of Hot oxalic solution brushed on with a soft brush will be enough. Oxalic will almost instantly remove/bleach all the remaining tannin and iron staining (including the 'shadows' left by mildews that contained 'iron' in their cells). Then thoroughly rinse the sail several times to remove all the oxalic.
Caution - be SURE to wear gloves, eye protection, etc. when using oxalic acid. You do not want oxalic to come in contact with your skin - it quickly absorbs through the skin and deposits in the nephrons of your kidneys as 'sharp' crystals.

Hope this helps. ;-)
Reply With Quote Quick reply to this message Share with Facebook
Old 11-28-2010
sailingdog's Avatar
Telstar 28
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 13 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
I would recommend using a full-face respirator mask along with heavy gloves when working with oxalic acid. The stuff can be very nasty.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Reply With Quote Quick reply to this message Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Best teak treatment.... Frozensurfer Gear & Maintenance 33 03-08-2013 02:19 PM
Bottom treatment? runner Gear & Maintenance 0 10-11-2008 11:54 PM
water treatment mike dixon Gear & Maintenance 1 10-21-2006 10:57 PM
Digital Library Of Anti-Doping Resources Available - World Anti-Doping Agency @ ISAF - NewsReader News Feeds 0 04-07-2006 01:15 PM
Asthma Treatment William Mahaffy Seamanship Articles 0 11-17-1999 08:00 PM

All times are GMT -4. The time now is 05:55 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) LLC 2000-2012

The store is owned and operated by a company independent of the forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.