Test Looks at Durability, Gloss, and Application

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Test Looks at Durability, Gloss, and Application

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For a test subject, testers turned to the smallest—but most gelcoat-challenged—vessel in the Practical Sailor fleet. Our 1974 O’Day Javelin’s highly oxidized blue gelcoat was pushing the limits of these products—it was probably a better candidate for a paint job. But the oxidation was consistently spread from bow to stern, and in the end, testers were happy with the job done by the top performers—and it was easier than painting it.

The test was simple: Follow the directions. Rate the directions, the ease of use (which includes whether applicators are supplied), and rate the shine quality and coating integrity over time. Price was also factored into the equation.

Test Looks at Durability, Gloss, and Application

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There are reports of acrylic coatings peeling or turning yellow over time. In our previous long-term tests, Practical Sailor did not notice peeling until well past the claimed life of the coating. No yellowing was noted.

Another issue raised in reader letters is the effect marine cleaners have on acrylic coatings. We wiped the hull with two multipurpose cleaners—Spray Nine and Simple Green—and saw no ill effects. However, manufacturers of these gelcoat restorers warn that these mildly acidic products should be avoided. Black-streak cleaners and alcohol are also no-nos.

Finally, testers tried the various products designed to remove the coatings. Poli Strip proved to be the most effective, but it also was the most expensive.

Darrell Nicholson
Practical Sailor has been independently testing and reporting on sailboats and sailing gear for more than 50 years. Its independent tests are carried out by experienced sailors and marine industry professionals dedicated to providing objective evaluation and reporting about boats, gear, and the skills required to cross oceans. Practical Sailor is edited by Darrell Nicholson, a long-time liveaboard sailor and trans-Pacific cruiser who has been director of Belvoir Media Group's marine division since 2005. He holds a U.S. Coast Guard 100-ton Master license, has logged tens of thousands of miles in three oceans, and has skippered everything from pilot boats to day charter cats. His weekly blog Inside Practical Sailor offers an inside look at current research and gear tests at Practical Sailor, while his award-winning column,"Rhumb Lines," tracks boating trends and reflects upon the sailing life. He sails a Sparkman & Stephens-designed Yankee 30 out of St. Petersburg, Florida. You can reach him at darrellnicholson.com.