by GreenLake » Thu Sep 02, 2010 11:59 am
This is a bit of a perennial topic on this forum. You may want to dig through older threads and posts for a complete picture.
Earlier, I tried polyurethane (without cross linker) by itself and on top of Benite(which is a hardening oil for sealing wood), and the results are not to be recommended (for a longer description, see some of my older posts).
Recently, I used 2-3 layers of epoxy (Clear Coat by SystemThree) followed by 3-4 coats of crosslinked polyurethane (same manuf). After one full year and one summer, the coamings and thwarts thus treated look good.
I plan on treating the floorboards the same way, next time I get around to them; because epoxy-coating must fully enclose the wood, I plan to disassemble them, so I can get to all sides of all the pieces.
That leaves the little shelf below the rear deck. Complete disassembly is too much work, and it's pretty protected (shaded and not sitting in the water). I may continue maintenance coats of PU.
My goal is something that will last multiple seasons before I need to give it additional attention. If you're the kind of person who constantly putters about with a can of paint and a brush, then oil or cetol may be more suitable. The need to be refreshed regularly, but doing so is in a way more painless, because you don't first have to remove what's already there.
Practical Sailor reviewed the various finishes (other than epoxy) in a relatively recent issue.
~ green ~ lake ~ ~