Barrier Coats for Blisters - SailNet Community
LinkBack Thread Tools
post #1 of 1 Old 03-27-2000 Thread Starter
Contributing Authors
Join Date: Jan 2000
Posts: 158
Thanks: 0
Thanked 8 Times in 6 Posts
Rep Power: 16
Barrier Coats for Blisters

I've got a blister problem, and I read in This Old Boat that painting the bottom with a silicone-based enamel with long Alkyds would be better than with epoxy since it wouldn't have as adverse a reaction as epoxy if water were to permeate it. Does this still hold true?

Michael Borga

Don Casey responds:


At the time I recommended the blister treatment you cite, a typical epoxy barrier was one to three coats. Alkyd enamel was just as effective, without making matters worse. Since then, the prescribed application has evolved to at least 20 mils of epoxy—at least six coats; usually seven or eight. At this thickness, epoxy does a reasonably good job of resisting permeation—much better than paint.

Unfortunately, dealing with blisters can be far more complicated than just slapping on a barrier coat, depending on the reason for the blisters. A lot has been written about blisters in the last 10 years. I urge you to do a little research before you attempt repairs.


Don Casey is offline  
Closed Thread

Quick Reply

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


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

Email Address:


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

Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is Off
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