I have been building a kenya top bar hive and made it out of used lumber it was painted both sides. Does it hurt for the inside of the hive to be white.
I know that with a lang hive you would not paint the inside (even though there are many out there that are) because the bees will varnish it with propolis or plant sap. But with a top bar hive? I do not know. Also, you can not beat the price of used wood.
You can not beat the price of used wood and yes I have use some was painted on both sides for boxes.
BEE HAPPY Jim 134 :)