What to paint the inside of fiberglass water tank??? - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Like Tree1Likes
  • 1 Post By RichH
Reply
 
LinkBack Thread Tools
  #1  
Old 01-09-2012
Cruxandreams's Avatar
young salt
 
Join Date: Mar 2011
Location: Chesapeake bay area
Posts: 98
Thanks: 4
Thanked 0 Times in 0 Posts
Rep Power: 4
Cruxandreams is on a distinguished road
What to paint the inside of fiberglass water tank???

I opened up the fiberglass water tank under the v birth the other day, and the old paint and fiberglass is flaking and its just a huge mess. So I scraped all the loose stuff off, and am wondering if there is a product that I can use to totally coat the inside of this tank that will hold up to constant contact with water. I want this tank to be able to hold drinking water so it is important that what ever I use doesn't start to mix with the water after a year or so, and contaminate it. Some sort of epoxy paint that sticks to fiberglass? Any ideas are welcome. Thanks

p.s. I called west marine and told them about this problem, and they had no answer for me...
Reply With Quote Share with Facebook
  #2  
Old 01-09-2012
Boasun's Avatar
Senior Member
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 3,064
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 9
Boasun will become famous soon enough Boasun will become famous soon enough
There are food grade coatings for water tanks. You will need to do some research on this. But you don't want to use any coatings that are NOT food grade.
__________________
1600 Ton Master, 2nd Mate Unlimited Tonnage

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

S/V Rapture
Reply With Quote Share with Facebook
  #3  
Old 01-09-2012
CorvetteGuy's Avatar
72 C&C Corvette
 
Join Date: Jun 2011
Location: PHYC
Posts: 318
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 4
CorvetteGuy is on a distinguished road
You mite want to check into replacing with a new plastic holding tank, a couple of bucks but no headaches in the future.
Reply With Quote Share with Facebook
  #4  
Old 01-09-2012
RichH's Avatar
Senior Member
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 2,837
Thanks: 9
Thanked 75 Times in 68 Posts
Rep Power: 15
RichH will become famous soon enough
What you need is a low amine epoxy that is *certified* for usage with potable water to NSF or FDA standards.

Best source I can recommend is Purchase industrial marine garage Epoxy Resin -| Paint - repair Best $$ - 603-435-7199 a TERRIBLE website but good products .... what you are looking for on that website is product NSP-120 ... available in quarts for small jobs. Because of the relative internal surface area to mass of water most probably the 'leachables' will be slightly beyond 'standards' ... so change the water often and add a charcoal/carbon filter on your spiggots, etc., change the carbon filter regularly/often. This about the best you can do to isolate and protect the water from chemical fragments ... short of ripping out the current tank and reinstalling with metal or roto-molded polyethylene.
;-)
Reply With Quote Share with Facebook
  #5  
Old 01-09-2012
Barquito's Avatar
Barquito
 
Join Date: Dec 2007
Location: Madison, WI
Posts: 1,945
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 7
Barquito is on a distinguished road
Is there anything wrong with just leaving it raw fiberglass? Once it is cleaned and blasted with chlorine to kill everything, is epoxy paint any better?
Reply With Quote Share with Facebook
  #6  
Old 01-09-2012
Squidd's Avatar
Superior Sailor
 
Join Date: Sep 2011
Location: Eagle River Wi.
Posts: 904
Thanks: 3
Thanked 3 Times in 2 Posts
Rep Power: 3
Squidd is on a distinguished road
Pull it out and replace it with new... (you'll have to pull it out to get paint on all surfaces anyway)
__________________
"Might as well cast off...If anything is gonna happen...It's gonna happen out there..."
"Captin Ron"
Reply With Quote Share with Facebook
  #7  
Old 01-09-2012
RichH's Avatar
Senior Member
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 2,837
Thanks: 9
Thanked 75 Times in 68 Posts
Rep Power: 15
RichH will become famous soon enough
Quote:
Originally Posted by Barquito View Post
Is there anything wrong with just leaving it raw fiberglass? Once it is cleaned and blasted with chlorine to kill everything, is epoxy paint any better?
Raw fiberglass, including gelcoat, etc. contains either styrene / polyester which never fully 'cures' thus continually emits unbound styrene monomer, etc. into the water; or, epoxy unless a low amine epoxy will also emit high amine levels into the water .... both of these species of chemical fragments are linked to quite severe pathology on long term and additive exposure. You definitely dont want to be drinking water, or brushing your teeth, washing your dishes, or even taking a shower with water from a 'raw' fiberglass tank.

With water or food, etc. you really need to use NSF or FDA rated materials .... and that includes the hose that you use to fill such tanks.

Sanitization is a whole 'nuther' story but suffice it so state that the tank internals must be mechanically cleaned to a high degree before sanitization ... or the sanitization will be incomplete and very short in time before the microorganisms begin to 'flourish'. Surface 'roughness' vastly retards the efficacy of sanitization.
HDChopper likes this.

Last edited by RichH; 01-09-2012 at 11:04 PM.
Reply With Quote Share with Facebook
  #8  
Old 01-09-2012
Barquito's Avatar
Barquito
 
Join Date: Dec 2007
Location: Madison, WI
Posts: 1,945
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 7
Barquito is on a distinguished road
Quote:
contains either styrene / polyester which never fully 'cures' thus continually emits unbound styrene monomer, etc.
I thought there might be a good reason. But them are some good eats!
Reply With Quote Share with Facebook
  #9  
Old 01-10-2012
Cruxandreams's Avatar
young salt
 
Join Date: Mar 2011
Location: Chesapeake bay area
Posts: 98
Thanks: 4
Thanked 0 Times in 0 Posts
Rep Power: 4
Cruxandreams is on a distinguished road
Thanks soo much

Thanks a million Rich, this is just what i was looking for, also appreciate all the info on the matter. Man I love the sailing community!!
Reply With Quote Share with Facebook
Reply


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
Paint for inside and outside kirbyc1 Gear & Maintenance 4 09-02-2010 01:17 PM
Can I build a fiberglass tank inside leaking metal tank? dohenyboy Gear & Maintenance 2 11-11-2007 10:08 PM
potable water tank paint bailing Gear & Maintenance 2 07-21-2007 09:20 AM
Repairing an integral fiberglass water tank welshwind Gear & Maintenance 12 07-11-2007 12:46 PM
fiberglass water tank JaimeSuave Gear & Maintenance 2 11-21-2003 02:25 AM


All times are GMT -4. The time now is 01:51 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

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