Your reasoning is backwards. First epoxy will stick to either wood or old
polyester far better than polyester will. Second, West 105 with their 207
clear hardener reinforced with a 2oz scrim will be clear with a slight
varnish tint and third it may not seem "structural" but the teak/holly will
continue to expand and contract with heat. Epoxy with a glass scrim will
hold together but polyester will not. You will be taking 3 steps backwards
if you cover it with polyester. 207 is self leveling and has a UV filter in
it but 2 or 3 coats of UV filtering varnish on top is recommended.

I am not sure what to do about your "simi-transparent" hatch. Nothing is
going to restore it to original. You might try sanding it down to get a
reasonably smooth surface and then flowing on a clear 2 part Aliphatic LPU
such as Progressive Epoxy Polymers. Regular laminating polyester is not all
that UV resistance. Most UV resistance comes from the pigment in the gel
coat.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"Chris" wrote in message
ps.com...
Thanks for the info!

I will go with the polyester then, as the main concern is UV stability.

Second are clearness of the coat/layer and adhesion to wood and the
fiberglass (polyester, I assume) of the hatch. Strength is not an
issue, none of this is structural.

Any concerns with that from anyone? (Double-checking before I putting
sticky non removable stuff on large visible parts of the boat.

Thanks!