Iron Keel Prep - SailNet Community
LinkBack Thread Tools
post #1 of 2 Old 12-17-2008 Thread Starter
Junior Member
Join Date: Mar 2008
Location: Seattle
Posts: 23
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Iron Keel Prep

I was considering doing a full bottom job on my Coronado 41 here in Seattle, but due to the cold snap have decided to hire someone to do the tenting & painting.

I have a 10,000 lb cast iron keel and would like to do the keel sanding, prep, and fairing myself, as it looks like there will be a lot of hours in that part of the work and I can hardly afford paying someone to do the bottom paint.

About 5 years ago, I had someone epoxy coat the keel (not sure what product). It looked great, but on the last 2 haulouts there was still plenty rust to be removed. I was able to get this industrial barrier coat called Amerlock which I used to patch the rusted areas after I'd sanded and prepped them last time.

This time around (hauling out Friday) I am expecting the keel will probably want to be sanded bare and re-coated completely since I just did patching last time. I don't think I can get ahold of any Amerlock this time (as it's only sold in 5-gallon drums), so I'm wondering what products and procedures should I follow before handing the work over to the yard to do the bottom paint.

From this forum and others, I heard good things about Interprotect 2000E as well as POR-15. Sounds like they're both good products and have a similar function - to provide a barrier from salt water reaching the iron.

After the initial scrubbing, sanding, and rust removal, it seems like I could go a couple different ways with the coatings. Which one is best for keeping the rust out and for adhering the bottom paint?

Maybe I'm confused but it seems like when folks use the POR-15 they are putting it directly on the metal, then fairing with epoxy, then painting. But when using Interprotect they fair first, then put on 10 mils worth of Interprotect coats, then paint. Is that right?

1) With POR-15
a) 2 coats of POR-15
b) several coats of West System epoxy filled with chopped glass for fairing
c) bottom paint (while the last coat of westsystem is still tacky ?)

2) With Interprotect
a) 2 or 3 fairing coats of west system epoxy + filler
b) 4 to 6 coats (!) of Interprotect 2000E
c) bottom paint while the last coat of interprotect is still tacky.

Isn't a primer needed between the west system and the bottom paint? What product would that be (I'm planning Interlux ablative bottom paint).

The Interprotect method seems more time consuming (all those coats of 2000E). It seems too like it will be difficult to hand off work to the yard folks for the bottom painting if I do either of these. Maybe I should let them put on the last coat of barrier coat whichever way I go, so that they can tie the
coats together properly.

cosmoking is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 2 Old 12-17-2008
ASA and PSIA Instructor
Join Date: Apr 2000
Posts: 3,617
Thanks: 8
Thanked 26 Times in 26 Posts
Rep Power: 16
I have used the West epoxy before and would do so again - it sets up harder than the Interprotect. Put at least 5 coats on, no need for any Interprotect. I've done two iron keels with West epoxy with excellent results. See the West System site for details. several regards...
sailingfool is online now  
Quote Quick Reply 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
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dropping the Keel matt2 Gear & Maintenance 13 02-06-2009 10:11 PM
My First Boat...Boat Term Question... Kacper General Discussion (sailing related) 38 09-23-2008 06:52 PM
reducing keel/adding fin? abacosol Gear & Maintenance 9 07-01-2007 09:32 PM
Keel Bolt Repairs Don Casey Gear and Maintenance Articles 0 11-10-2003 07:00 PM
Keel Bolt Concerns Don Casey Gear and Maintenance Articles 0 10-12-2003 08:00 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome