Discussions on everything about the J/30 Sailboat!
With your one stop source
The J/30 Marketplace
Join or Renew
Class Membership

1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
Today's Birthdays
No Birthdays
Newest Members
Sharon, marco sorio, Bill R, Hallel88, Argmovs
988 Registered Users
Crew Manager Boat Websites

Boat Website subscriptions with
Crew Scheduling & Notifications

Created by former J/30 Rhapsody owner

J/30 Social Network
Popular Topics(Views)
925,443 Dacron Main
148,964 Ananda's Refit
Forum Statistics
Most Online223
Dec 17th, 2019
Previous Thread
Next Thread
Print Thread
Yellow substance leaking from keel #18915
10/11/21 07:09 AM
10/11/21 07:09 AM
Joined: Jun 2021
Posts: 14
Falmouth, MA
Ryan Anderson Offline OP
Ryan Anderson  Offline OP
Joined: Jun 2021
Posts: 14
Falmouth, MA
A week after being hauled out I noticed a yellow substance coming out of the keel. It was kind of sticky, and then a week later it dried and now resembles dried mud. The area around the substance has a very thin soft layer, I can push it in like a piece of bubbled out paper. Underneath seems solid. There is a slight discoloration of the paint surrounding the area. Any idea what this is? Is a repair needed?

[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]

Attached Files
IMG_6973.jpg [26.61 KBytes] - (90 downloads)
IMG_6974.jpg [42.33 KBytes] - (87 downloads)
IMG_6975.jpg [17.83 KBytes] - (88 downloads)
IMG_6976.jpg [43.05 KBytes] - (86 downloads)
West Marine Affiliate Program

The J/30 Class Association has partnered with West Marine and is now a member of the West Marine affiliate program. You can support the J/30 Class when you make your West Marine purchases online. The J/30 Class Association receives a percentage of sales from your purchases when you click through from our website. Click the logo above and you will be directed to the West Marine website with a cookie that identifies you as a J/30 affiliate. You can also use any discounts that you may be authorized.
Re: Yellow substance leaking from keel [Re: Ryan Anderson] #18916
10/11/21 07:38 AM
10/11/21 07:38 AM
Joined: May 2007
Posts: 2,653
Portsmouth, RI
Rhapsody #348 Offline
Past J/30 Class President
Rhapsody #348  Offline
Past J/30 Class President
Joined: May 2007
Posts: 2,653
Portsmouth, RI
You are seeing the result of water that has penetrated the barrier coat / fairing.
  • Use an orbital sander and sand the area down to reach the lead.
  • Make sure all the areas on the edge are well bonded to the lead
  • Feather the edges about 2 inches so there is no bottom paint, just the barrier coat and fairing
  • Score the lead using a stiff wire brush
  • Mask around the area
  • mix unthickened neat epoxy and use the wire brush to work it in the scored lead
  • tape release cloth over the area, squeegee smooth and let cure
  • peel release cloth when cured and wash with plain water to remove any amine blush
  • dry and light sand with 80 grit paper to rough up cured epoxy - hand sand so you don't burn through, then wipe clean with acetone
  • apply Interprotect 2000e barrier coat - one coat and let cure
  • If there are any low spots fair with epoxy thickened with microlight fairing compound and let cure
  • sand with 80 grit and wipe clean with acetone
  • apply 3 layers Interprotect 2000e - you can follow the timing using the thumbprint test for recoat.
  • apply bottom paint within the time limit for thumbprint test, or later which requires light sanding.

ps - I entered you in the fleet database. You can access your record when logged in to the forum by clicking on your user name, then click View Profile. Click Class Database Link next to J/30 Profile. You can update information there.

Last edited by Rhapsody #348; 10/11/21 08:35 AM. Reason: added ps about fleet database

Moderated by  David Erwin 

Who's Online Now
0 registered members (), 43 guests, and 2 spiders.
Key: Admin, Global Mod, Mod
Hurricane Gulch San Pedro, CA
Endeavour (246) Sailing in Prince Edward Island
First cruise
Fotos Regatas 2017 Tomine Colombia
Recent Posts
Cabin Table Wanted
by Rhapsody #348. 08/17/22 10:19 PM
Replacing original 2GM with a 2YM15
by fcd. 08/17/22 07:32 PM
Main Cabin and Head Hatches
by Ryan Scudder. 08/17/22 01:48 PM
Traveler cam cleat replacement
by Ryan Scudder. 08/17/22 12:21 PM
direct toilet discharge to the outside
by Joao Brito CHILE. 08/13/22 03:29 PM
Cut back V-Berth bulkhead?
by Patrick Stinson. 08/13/22 02:44 PM
Annual Insurance Costs
by Rob Van Name. 08/13/22 02:02 PM
by Rob Van Name. 08/13/22 02:00 PM
1981 J/30 - Hull #345 "JackRabbit2" for sale
by George Hero. 08/13/22 08:41 AM
Main halyard trouble
by Georges. 08/12/22 10:38 AM
Powered by UBB.threads™ PHP Forum Software