Re: Two-Part Polyurethane vs One-Part Polyurethane
I once painted the bottom of a boat with the one part Interlux polyurethane topside paint after removing the anti-fouling bottom paint and getting the bottom sand blasted. It seemed to provide a thinner and softer coat than the 2 part stuff. It took several coats to get the job right. The 2 part paint is almost like gel coat if you apply it correctly and a single coat with a spray gun is often sufficient. You can't brush on the 2 part paint if I recall correctly. The one part is brushable. You need to use a respirator when applying the 2 part, which is probably why it is hard to find in CA.