re-doing bottom paint... - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 13 Old 06-24-2009 Thread Starter
Senior Member
 
DropTop's Avatar
 
Join Date: May 2009
Posts: 180
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
re-doing bottom paint...

I just finished scraping 19 years of paint of my bottom and have sanded the entire hull down to nice clean and smooth gelcoat with 120grit paper.

I'm being told a number of things on what to do next and thought I'd get some more opnions.

Reccomendation 1 (from the broker I just bought the boat from) is to put 1-2 coats of a epoxy based barrier coat on, then 2 coats of ablative paint.

Reccomendation 2 (from a friend who used to have a O'Day 16 a long time ago) is to use a regular primer paint and then 2 coats of ablative paint.

Reccomendation 3 (from west marine sales rep) is to skip all base coats, apply 1 coat of ablative in white or grey, and then 2 coats of ablative in blue (I want the final hull color to be blue) because "since hull is 19 years old and freshly sanded, the paint will stick to the gelcoat better than it does to primer"


Any suggestions on what course of action I should take here would be greatly apprecieated.
DropTop is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 13 Old 06-24-2009
Senior Member
 
Join Date: Oct 2006
Location: Virginia
Posts: 725
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Quote:
Originally Posted by DropTop View Post
Reccomendation 1 (from the broker I just bought the boat from) is to put 1-2 coats of a epoxy based barrier coat on, then 2 coats of ablative paint.
Thats what i would do. imho

That derelict boat was another dream for somebody else, don't let it be your nightmare and a waste of your life.
badsanta is offline  
Quote Quick Reply Share with Facebook
post #3 of 13 Old 06-24-2009
Tartan 27' owner
 
CalebD's Avatar
 
Join Date: Jan 2008
Location: NYC
Posts: 4,738
Thanks: 4
Thanked 107 Times in 99 Posts
Rep Power: 8
 
I think you are supposed to put more then 2 coats of the barrier coat (ie., Interlux 2000) on. Reading the label and actually following the directions with most of this stuff helps.
Your broker probably did not want to go into the detail that is on the label.

"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen

Everybody has one:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
CalebD is offline  
Quote Quick Reply Share with Facebook
post #4 of 13 Old 06-24-2009
Senior Member
 
celenoglu's Avatar
 
Join Date: Dec 2008
Posts: 666
Thanks: 0
Thanked 13 Times in 12 Posts
Rep Power: 7
 
In my opinion the boat is old enough to develope osmosis. If it didnot develope osmosis till now, it is less likely to develope it from now on. To simplify things I can say that the gell coat made its duty to protect the boat. Just apply your antifouling.
celenoglu is offline  
Quote Quick Reply Share with Facebook
post #5 of 13 Old 06-24-2009
ASA and PSIA Instructor
 
Join Date: Apr 2000
Posts: 3,555
Thanks: 7
Thanked 24 Times in 24 Posts
Rep Power: 16
 
Given the boat has no blistering, if you are going to use it in the same manner that it has been used in the prior 19 years (same water, same season length), then I would not bother with barrier-coating (which is 4-5 coats at least).

I would proceed with recommendation 3, be sure to follow the paint prep instructions, including sanding the bottom with 80 grit paper first.

Certified...in several regards...

Last edited by sailingfool; 06-24-2009 at 10:48 AM.
sailingfool is offline  
Quote Quick Reply Share with Facebook
post #6 of 13 Old 06-24-2009
Senior Member
 
Join Date: Jul 2001
Posts: 1,174
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 14
 
As you can see, everyone has a different opinion. Let's try this another way:
Safest approach - barrier coat and then paint
Expedient approach - just bottom paint
Strange approach - regular primer paint and then bottom paint.
k1vsk is offline  
Quote Quick Reply Share with Facebook
post #7 of 13 Old 06-24-2009
Member
 
Join Date: Jul 2006
Posts: 74
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
 
Barrier-coating ....we put 8 coats on...the more the better. 8 years later the bottom was perfect......
Gary3675 is offline  
Quote Quick Reply Share with Facebook
post #8 of 13 Old 06-24-2009 Thread Starter
Senior Member
 
DropTop's Avatar
 
Join Date: May 2009
Posts: 180
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
a friend of mine (in the process of doing the exact same thing on his Catalina 25) called Interlux today and they told him not to use any barrier or primer, go straight paint....

seems like I'm probably not going to get a concensus on what is the reccomended way after all... (Gary, I agree with your logic, I only question if it actually makes a difference, or it's just peice of mind)

Four Points - 1990 Hunter 27'

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
DropTop is offline  
Quote Quick Reply Share with Facebook
post #9 of 13 Old 06-25-2009
Senior Member
 
JimsCAL's Avatar
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,774
Thanks: 2
Thanked 68 Times in 63 Posts
Rep Power: 9
 
Quote:
Originally Posted by DropTop View Post
seems like I'm probably not going to get a concensus on what is the reccomended way after all...
Bingo! There is no 100% correct approach. Chances are an older boat in the Northeast that has not blistered and is hauled each fall will not have problems. You will probably be fine with just bottom paint. The barrier coat is like insurance. Your call.
JimsCAL is offline  
Quote Quick Reply Share with Facebook
post #10 of 13 Old 06-25-2009
Senior Member
 
Join Date: Oct 2006
Location: Virginia
Posts: 725
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
It is my understanding that all fiber glass boats absorb water and if left in the water for years it can add hundreds or thousands of pounds of weight to the boat. I always thought the barrier coat was to prevent this. iirc

That derelict boat was another dream for somebody else, don't let it be your nightmare and a waste of your life.
badsanta is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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
Bottom Paint Questions harbin2 Gear & Maintenance 8 02-22-2009 12:09 PM
The Bottom Paint Blues Don Casey Gear and Maintenance Articles 0 06-22-2003 08:00 PM
How to Paint Your Own Deck Don Casey Gear and Maintenance Articles 0 02-04-2002 07:00 PM
Bottom Paint Compatibility Dan Dickison Gear and Maintenance Articles 0 01-24-2001 07:00 PM
Paint the Bottom Yourself Tom Wood Gear and Maintenance Articles 0 03-09-1999 07:00 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