Originally Posted by ABLiveSurfdotcom
I'm looking for sliding hatch boards for my catalina 22. The ones I have now are worn, discolored, and weathered.
Be of good courage. I am cheap, so will advise you to try refinishing.
Get the old finish (if any) off the wood. Use a stripper to minimize unnecessary wood loss from sanding.
Assuming they are teak, start with some good teak cleaner, then rinse thoroughly and let dry. This should remove black stains.
Sand them with #120 grit sandpaper and a sanding block, or use a vibrating sander, try to get back to clean looking wood. You may be limited in the amount of sanding you can do if your are dealing with plywood. Don't sweat it, get the surface as smooth as you can without breaking through the finish ply.
Finish sand with # 180 or 220 sandpaper
Using a good grade of exterior spar varnish, brush (foam or natural bristle) on a first coat thinned a little with turpentine. Follow with about 8 additional un-thinned coats, rubbing down with scotchbrite or 220 grit sandpaper between coats. Wipe down thoroughly just before applying new varnish.
Perfection may not be achievable, but they will look a lot better.
Add a couple of coats each season.