2 part urethane--failure - SailNet Community
 
LinkBack Thread Tools
post #1 of 4 Old 11-23-2005 Thread Starter
Junior Member
 
Join Date: Nov 2005
Posts: 9
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
2 part urethane--failure

recetnly did all my teak. Scraped and sanded to perfection. First coat was West epoxy, w. 10% laquer thinner, then 3 coats of 2 part urethane. The three coats went on within hours of each other, as per instructions on the label.
This coating failed badly. It turned semi-opaque (kind of milky-looking) in a lot of places, and in other places it is peeling.

Other than moisture in the wood, what are the possible causes?
distantdrummer is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 4 Old 11-23-2005
Senior Nappy Headed Ho
 
Join Date: Feb 2001
Posts: 734
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
2 part urethane--failure

Bad paint brush operator!
Denr is offline  
Quote Quick Reply Share with Facebook
post #3 of 4 Old 11-23-2005
Senior Moment
 
SailorMitch's Avatar
 
Join Date: Nov 2005
Location: MD
Posts: 1,931
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
2 part urethane--failure

I just did a quick check on the Gougeon Bros. website and lacquor thinner is not one of the chemicals they say to use for thinning. Lacquor thinner is recommended for clean up, however. I have a feeling your epoxy base is compromised as a result, but that''s only a gut feeling.

Why thin the one epoxy coat at all? Or why use epoxy at all for a base coat?

You also didn''t mention what the 2-part product is (Bristol Finish perhaps?) you used for the top coats. Whatever it is, be sure it will bond to epoxy if you insist on using that as a base. And if you use WEST, be sure to clean off the amine blush and rough up the surface with sand paper. MAS eposy with their slow hardener would be a better choice (no amine blush with the slow.)
SailorMitch is offline  
Quote Quick Reply Share with Facebook
post #4 of 4 Old 12-25-2005
Junior Member
 
Join Date: Aug 2002
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
2 part urethane--failure

Lacquer thinner was the WRONG thing to use to mix with the epoxy. If you must thin epoxy (and normally it is NOT a good idea) the only solvent recommended is acetone, and not much of it!

I believe if you go and look again at the technical information published by the makers of WEST eposies you will see that lacquer thinner is used to clean up and that is all.
billknny 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
Part for HOOD SEA Furl II orionatc Gear & Maintenance 5 10-28-2008 05:26 AM
Interlux Perfection Varnish (2 part) mikehoyt Gear & Maintenance 0 05-31-2004 05:50 AM
Flange failure foxglove Gear & Maintenance 0 05-11-2004 10:28 AM
Does Sailor''s Weight & Height Play a Part in Sailing Faster? MimiSan Racing 0 01-19-2004 05:12 AM
I need a part teck45 Gear & Maintenance 0 07-17-2002 03:26 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