Blisters in the fresh water tank

Jun 28, 2014
13
Hunter 31 Fernandina Beach
I have a 1984 Hunter 31 The fresh water tank started leaking I removed the cover and found the sealing coating was blistered and starting to peel. I get I have to remove the old coating and replace the sealing coating but can anyone tell me what to use to seal the inside of the fresh water tank??? the cover is fiberglass and the bottom I believe is Stainless. its not rusty and it doesn't feel like aluminum
 

Gunni

.
Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
There are food-grade epoxies manufactured for the purpose of tank lining. You will need good access to the tank interior for prep and application.
 
Mar 26, 2011
3,717
Corsair F-24 MK I Deale, MD
Can't really clean a bladder.

We need a better description. Is the tank SS? Is the lid the only problem? Pictures?

Sounds very solvable, but we need information.
 
Jun 28, 2014
13
Hunter 31 Fernandina Beach
The tank is an integrated construction of the deck insert. The tank is metal although It doesn't seem to be aluminum when I scrape the old gel-coat off. The tank is blistered the lid is blistered and a structural divider and lid support is blistered. every interior surface seems to be coated with Gel-coat and I have used a sander to remove all the coating from the inside of the lid. I have used a scraper to remove most of the coating from inside the tank. I need to apply some elbow grease to finish cleaning the coating that isn't ready to pop off. I have read Interlux 2000 is a fine barrier, but they "Interlux" assures me it is not a food grade barrier.
 

Gunni

.
Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
Yeah, you don't need a bottom laminate moisture barrier like InterProtect, you need a potable water tank coating. Bark up that tree. Luckily, it sounds like you have excellent access, which greatly eases the job.
 
Jun 28, 2014
13
Hunter 31 Fernandina Beach
Thank you RichH I called and talked with Larry and it sounds as though I can refinish the inside for $100.00 Larry is very confident it will do the job for a long time to come.