Hagar Hi there Mate
Yes, the inside of the hull was sealed with inexpensive polyester resin, the reason for this, is that the inside of the hull is not as subjected to the same wear and tear treatment as the exterior.
The exterior of the hull, the first layer of planks were Obechi timber.
the second and outer layer were of Mahogany. This, then, was given 2-3 coats of pure Epoxy Resin - no matting or any other material was added.
This Epoxy finish was then rubbed down to the desired finish for painting.
Before I answer your next question, I need to ask you why do you wish to seal the inner planks, before you 'lay up' over the top? Yes, I do realise that in real life there was a skin of Calico with red lead put on between the two layers of planking. Are you trying to assimilate this, as Gribeauval does with his lifeboats?
or
Are you concerned in case you acquire a leak between the planks????
If it was me going to glue on top of Epoxy, or a Polyester; I would be tempted to use a superglue - knowing full well the exterior planking is going to be sealed completely with another coat of Epoxy resin.
To be honest, I would think this was a bit overkill, although having said that - what materials are you proposing planking the hull with?
aye
john
bluebird