What to paint the inside of fiberglass water tank??? - SailNet Community
 1Likes
  • 1 Post By RichH
 
LinkBack Thread Tools
post #1 of 9 Old 01-09-2012 Thread Starter
young salt
 
Cruxandreams's Avatar
 
Join Date: Mar 2011
Location: Chesapeake bay area
Posts: 98
Thanks: 4
Thanked 0 Times in 0 Posts
Rep Power: 5
 
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...
Cruxandreams is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 9 Old 01-09-2012
Senior Member
 
Boasun's Avatar
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 3,070
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 10
   
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
Boasun is offline  
Quote Quick Reply Share with Facebook
post #3 of 9 Old 01-09-2012
72 C&C Corvette
 
CorvetteGuy's Avatar
 
Join Date: Jun 2011
Location: PHYC
Posts: 318
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 5
 
You mite want to check into replacing with a new plastic holding tank, a couple of bucks but no headaches in the future.
CorvetteGuy is offline  
Quote Quick Reply Share with Facebook
post #4 of 9 Old 01-09-2012
Senior Member
 
RichH's Avatar
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 3,551
Thanks: 24
Thanked 165 Times in 154 Posts
Rep Power: 16
 
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.
;-)
RichH is offline  
Quote Quick Reply Share with Facebook
post #5 of 9 Old 01-09-2012
Barquito
 
Barquito's Avatar
 
Join Date: Dec 2007
Location: Madison, WI
Posts: 2,266
Thanks: 0
Thanked 27 Times in 27 Posts
Rep Power: 8
 
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?
Barquito is offline  
Quote Quick Reply Share with Facebook
post #6 of 9 Old 01-09-2012
Superior Sailor
 
Squidd's Avatar
 
Join Date: Sep 2011
Location: Eagle River Wi.
Posts: 978
Thanks: 6
Thanked 9 Times in 8 Posts
Rep Power: 4
 
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 take 'er out...If anything is gonna happen...It's gonna happen out there..."
"Captin Ron"
Squidd is offline  
Quote Quick Reply Share with Facebook
post #7 of 9 Old 01-09-2012
Senior Member
 
RichH's Avatar
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 3,551
Thanks: 24
Thanked 165 Times in 154 Posts
Rep Power: 16
 
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.
RichH is offline  
Quote Quick Reply Share with Facebook
post #8 of 9 Old 01-09-2012
Barquito
 
Barquito's Avatar
 
Join Date: Dec 2007
Location: Madison, WI
Posts: 2,266
Thanks: 0
Thanked 27 Times in 27 Posts
Rep Power: 8
 
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!
Barquito is offline  
Quote Quick Reply Share with Facebook
post #9 of 9 Old 01-10-2012 Thread Starter
young salt
 
Cruxandreams's Avatar
 
Join Date: Mar 2011
Location: Chesapeake bay area
Posts: 98
Thanks: 4
Thanked 0 Times in 0 Posts
Rep Power: 5
 
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!!
Cruxandreams is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









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
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

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