Applying glass over ply skins results in a solid base for a
beautiful finish. Agree about the peel ply for sure.

The inside of the plywood should be sealed. Take a look at System
Three Clear Coat. Pure epoxy, water thin, first coat soaks in a lot.
Two coats does a nice job sealing plywood. Compatable with T-88 even
as a wet coat. In other words, you can paint the second layer of
ClearCoat on the ply skin, apply T-88 to rib caps, and bond
immediately. The other way is to squeege T-88 on to the ply. I guess
any epoxy might work as a sealer, but I like compatability at the rib
line bonds.

Dan Horton