: Even after several fill coats of epoxy applied with brush and squeegee on the
: inside surfaces of the deck and hull I get gas bubbles forming as the
: epoxy cures. This happens particularly at the site of staple holes. I'm
: concerned that the epoxy still has not created an an impermeable barrier
: in those areas.

Hello Thomas,
I agree with Danny's line of thinking.If you start in the morning hours the temp. is likely rising towards mid-day. Better if you start in late afternoon or evening when temps are falling a little. Helps gases in the wood to be contracting not expanding. Good luck.
Kurt Hoffman