Exterior Clear Finish

[pappybaynes]

I am currently working on a large 2-sided sign made out of Port Orford Cedar - the letteres will be V-Carved and painted - normally I would use a spar varnish over the entire sign when completed...wondering if there might be a better product??? Thank you.
Dick

[kurt_rose]

Epifanes. Expensive but the best.

http://www.amazon.com/Epifanes-Wood-Finish-Gloss-1000/dp/B005ADX1BW/ref=sr_1_2?ie=UTF8&qid=1436442465&sr=8-2&keywords=epifanes+varnish&pebp=1436442717120&perid=00X4SAS2M8M2JR4XW5M7

[bleeth]

Dick:
Kurt's suggestion of Epifane is a good one, as it is one of the best 1 part varnishes out there.
The steps up require mixing with reducer. Allwood by Awlgrip is a terrific product but I would check with them regarding compatibility with your paint.
It is a cross linked urethane and will last longer than traditional varnishes.

[bobmoore]

I have not found any clear to cover cedar in a northern tier climate and last for more than a year or 2. I have entirely switched to sickens log and siding with 2 coats for a flat and 3 coats for a gloss finish. Sand between coats 2 and 3 for gloss. Cedar must be supported vertically (not hung from eyebolts) to prevent warpage on large signs. Bob

[joe]

I'm with Bob.
Perhaps there is a superior product but haven't found it yet.

Joe
Normansignco.com

[Brady Watson]

Clear epoxy with UV inhibitors may be an option. It's the same kind of stuff used on surfboards. Epoxy...NOT polyester.

-B

[joe]

I'd absolutely love see signage coated with epoxy. My attempts were losers. Can't be sprayed.

Joe

[pappybaynes]

Thank you for the suggestions.
Dick

[knight_toolworks]

plus epoxy runs really badly so it is impossible to do vertical.