Hello Harlon and Everyone,
I just finished painting my tbh. I ended up painting both the inside and outside surfaces. I haven't painted the inside of my hives before other than the bottom board.
My thinking was the tbh hive and essentially all the equipment will be in the yard all the time with little chance to refurbish, so I painted all the surfaces. The hive is essentially one unit with seperate bottom, etc.
Just Some Thoughts
Ps Harlon would you be willing to post some pictures of your TBH on beesource. I would like to see it.