Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 21-02-2009, 06:57   #1
Registered User

Join Date: Feb 2008
Location: Cruising
Boat: Jeanneau 38 Gin Fizz- Rhosyn Mor
Posts: 331
Patching an Iron keel

I have to patch an iron keel. THere are no large pitted areas, but many small ones. I was going to sandblast, but the yard wont let me. So I have no choice but to patch it. I am planning on wire brusing any rust spots down to bare metal and then patching those spots with Primocon, or rust converter. Obviously will have to feather the paint over some of the paint that is on there now. Are there any issues with this? are some products better at this than others? I cannot change yards so this will have to do until next years haul out. Any other suggestions?

Rhosyn Mor is offline   Reply With Quote
Old 21-02-2009, 07:52   #2
Registered User
Sandero's Avatar

Join Date: Apr 2006
Location: Southern Westchester/Northport LI
Boat: Shiva - Contest 36s
Posts: 3,892
The proper way to deal with this is to sand blast and then immediately coat with tar epoxy. Then you can fair with with the usual fairing compounds. This is something I did about 20 years ago and has held up very well, except in a few places where the coating was breached (and requires repair). I was amazed at how many holes in the casting there was. The results are a very fair keel.
Attached Thumbnails
Click image for larger version

Name:	may 01a.JPG
Views:	109
Size:	56.4 KB
ID:	7161  

Sandero is offline   Reply With Quote
Old 21-02-2009, 08:42   #3
Registered User

Join Date: Feb 2008
Location: Cruising
Boat: Jeanneau 38 Gin Fizz- Rhosyn Mor
Posts: 331
DEfjef, thanks, I had not thought of Coal Tar epoxy ( its banned in the UK). I have to patch, not allowed to sand blast, in my research it looks like Coal Tar epoxy will feather into any remaing bottom paint. I presume by standard fairing compounds you mean west system or the like?
Rhosyn Mor is offline   Reply With Quote
Old 21-02-2009, 11:09   #4
Moderator Emeritus
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 9,844
Sand with a 7 inch disk sander where you can down to bright unoxidized steel. Don't torture yourself with a wire brush. Use an epoxy sealer like Interlux 2000 which can be put straight over clean unoxidized bare metal. Don't put any sort of anti-corrosion chemicals over the bare metal that might reduce the epoxies ability to adhere. Put a number of coats over your original coat to build up the thickness, and therefore resistivity to something scratching it down to the bare metal. Interlux 2000 is very tough and its sandable. Use an epoxy filler to do the fairing with another 2 coats of Interlux 2000 over the filler. Antifoulant paint can be rolled right over the 2000.

Life begins where land ends.
David M is offline   Reply With Quote
Old 21-02-2009, 12:20   #5
Registered User

Join Date: Nov 2006
Posts: 976
Images: 6
I agree with above. A good two part epoxy primer after disc sanding (if you cant sand blast). Wire brushing does very little. Ask the question at - Welcome to the Frontpage
A free not for profit group.
cooper is offline   Reply With Quote
Old 21-02-2009, 12:42   #6
Senior Cruiser
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 3,985
If you can't sandblast, you might try renting an air powered needle-gun. Have used them a number of times on iron keels.

Blue Stocking is offline   Reply With Quote


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
Fin Keel? Long Keel? Jeff? bob_deb Monohull Sailboats 89 13-03-2012 11:28
Twin keel v Fin keel, pro's n con's ? Davegw Monohull Sailboats 6 12-02-2009 02:08
How to "seal" a cast iron keel? speedoo Construction, Maintenance & Refit 4 04-04-2007 19:11
Any Benifit To Iron Keel? Hubec Monohull Sailboats 11 04-04-2007 19:05
Packing Iron zephyr4 Anchoring & Mooring 9 09-02-2007 14:24

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 05:39.

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.