New boat finish - failure from below - SailNet Community
 
LinkBack Thread Tools
post #1 of 4 Old 07-10-2017 Thread Starter
Boat shopping
 
Join Date: Mar 2010
Location: Rehoboth Ma
Posts: 120
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
I'm removing this

Removing

SloopDogg

Last edited by SloopDogg; 07-12-2017 at 05:02 PM.
SloopDogg is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 07-10-2017
Senior Member
 
kd3pc's Avatar
 
Join Date: Oct 2006
Location: Callao, VA
Posts: 1,529
Thanks: 0
Thanked 35 Times in 34 Posts
Rep Power: 14
 
Re: New boat finish - failure from below

what did the repair look like shortly after the repair/repaint?? Could you see all the flaws that we see in the blue pic?

Does not look good for a long lasting repair...
kd3pc is online now  
post #3 of 4 Old 07-10-2017
Senior Member
 
RichH's Avatar
 
Join Date: Jul 2000
Location: Pennsylvania
Posts: 5,065
Thanks: 54
Thanked 330 Times in 314 Posts
Rep Power: 21
   
Re: New boat finish - failure from below

Boats that originally have 'dark' hull have thicker matting layers under the gelcoat to prevent 'print out' of the subsurface roving layer - 'the bumps' which appear after a newly painted/coated dark hull is exposed to heating in the direct sunlight.
Boats that originally have white or 'light' gelcoat and are later painted 'dark' will usually experience significant 'print out' of the undersurface roving layers when later painted or coated with anything 'dark'.

So, if the boat originally had white gelcoat and someone painted the hull 'dark', this is the leading cause of the development of 'pimples' and other surface discontinuities of the hull surface .... the original polyester in the gelcoat, etc. became 'more' cured due to the increased temperature cause by the 'darker' color that was overlaid upon the original WHITE gelcoat that had a 'thinner' matting layer underneath - quite common with 'painted' fiberglass boats.

Last edited by RichH; 07-10-2017 at 06:50 PM.
RichH is offline  
 
post #4 of 4 Old 07-10-2017
S/V Caper Nonsuch 36
 
flyrod's Avatar
 
Join Date: Oct 2011
Location: Old Lyme, Ct.
Posts: 80
Thanks: 16
Thanked 1 Time in 1 Post
Rep Power: 9
 
Re: New boat finish - failure from below

I realize you said you removed the gel coat, but that looks like gel coat checking or fissures to me.
flyrod is online now  
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











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
Production boat hard aground because of steering failure MastUndSchotbruch General Discussion (sailing related) 2 02-06-2016 04:43 PM
Failure Mudtimud General Discussion (sailing related) 16 12-29-2012 07:40 AM
Running rigging wear on boat finish.. groundhog Gear & Maintenance 5 09-29-2009 11:17 AM
Schiller's boat has strong finish - Muskegon Chronicle NewsReader News Feeds 0 07-30-2007 11:15 AM
boat finish Bawgy Boat Review and Purchase Forum 2 10-21-2003 08:53 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