Appox. how much should I mix?
 

I have a 4*8 sheet of plywood, that needs to be sealed with epoxy before going into the boat. Any rough idea how much I will need to do one side.

This will be a transom board...I have heard that I should thin down so it will penetrate better...Any thoughts?

Re: Appox. how much should I mix?
 

Terry, George at G&S told me to make a flash coat to seal w poly. Mix w mek and thin to the thickness of water w/ acetone. I DON`T know about epoxy. I`ll see him tomorrow and ask him.Gotta get to work. Still lots to do.
GFS

Re: Appox. how much should I mix?
 

yeah you definatly want to mix acetone in so it absorbs into the plywood before the next coat.

Re: Appox. how much should I mix?
 

If your using epoxy, I would not thin it, I would use slow hardner on it, and do it in the evening when it is cool. It will take at least 2 coats, and I would wait a day between coats. I use a plastic spreader to evenly apply it, and I think it takes about 12 oz for the first coat, and 8 for the second. You don't want any puddles, just wet it out, light sand between coats.
Leave it facing up, and only do one side at a time. Epoxy migrates MUCH better than poly glass.
This is assuming your using epoxy.

Re: Appox. how much should I mix?
 

I am using epoxy. Slow hardener yep. Thanks for the night time suggestion.