SailNet Community - View Single Post - Epoxy vs. fiberglass
View Single Post
post #20 of Old 04-19-2010
Senior Member
Freesail99's Avatar
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 12
Send a message via Yahoo to Freesail99
Found this on the web:

Don Casey Tip #15
Gelcoat Crazing

If the surface of your boat looks like a cracked eggshell, the gelcoat is suffering from crazing (sometimes called alligatoring). The easiest repair method is to sand the surface heavily and roll on two coats of epoxy primer followed by two coats of two-part linear polyurethane. The epoxy fills and seals the cracks, and the polyurethane restores the color and gloss.

If you don't want to use paint, you can grind away most of the crazed gelcoat and replace it with a fresh application of color-matching gelcoat paste. What won't work is to "paint" over the crazing with new gelcoat. The gelcoat will bridge the cracks rather than filling them, and the crazing will soon return.

By the way, localized crazing (as opposed to all over the boat) is almost always due to flexing of the underlying laminate. In this case, you must stiffen the affected area before you can successfully repair the crazing.

S/V Scheherazade
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Freesail99 is offline  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome