[shorty28]

Need a little advice. From reading some of the posts here, I think I want to use exterior grade plywood (not marine or treated). I also think I need to apply some sort of coating. Can anyone recommend what type of coating to use. Is the fiberglass resin stuff you see at most marine stores ok. I have used this in the past to patch holes on fiberglass boats....seems like you mix it with a hardener, and roll it over mesh tape...etc Or am I way of base?? I have heard the word epoxy used....is this the same?? Also, what exactly constitutes "exterior grade plywood"Thanks for any advice..

[MrDumb]

I do not know, but I would assume that a exterior grade ply wood would be treated? If not than I would definetly use 3/4" treated CDX ($20/sheet). That is what I have always used. It seems to hold up just fine too.

[quantumleap]

If you want it to last, coat it with resin, no mat or cloth needed. Check rotdoctor.com. They make some stuff called CPES that would work great in your application.

[shorty28]

Thanks...I'll check these options out