We still have the 2005 test samples out in the weather, but all have failed except the black painted boards. The "final" results were printed a couple years ago,
http://www.mar-k.com/final_summary.html , for a brief analysis of what we observed. If you compare these results to the test done in 2004, there is a noticeable improvement and we believe it is due to using two coatings on these test samples, a durable primer/sealer type coating, and then a UV resistant topcoat product. Helmsman by itself failed earlier than Helmsman over another product such as Pelucid or epoxy.
The black painted boards are looking great after 4 years in the weather 24/7. We attribute that durability to the POR 15 applied under the gloss black topcoat. The Behr black in the 2004 test was coated over Behr primer and failed early.
Mar-Ktech
