Me & my husband are new to beekeeping. We put our new bees into the hive today a few hours ago. We just noticed that we never painted the entrance to the bottom board. Should we paint it now - its about 7pm? Or should we wait until tomorrow morning and then leave the bottom board out all day so it doesn't smell like new paint? Or should we just leave it?
Options would be to order/make a new bottom board and paint it up and switch it. Hard to paint with the bees in. You could close the hive up for a day or two and paint but that would not be my first choice.
I build most of my own hives, roofs, bottom boards, etc.
Don't worry about it.
If it's really bothering you, you can paint it after the bees have "gone to bed" for the night. Exterior latex would probably be best since an oil base wouldn't dry by morning.
I've used oil based paint, latex and epoxy (2 part system). I can't say that 1 is any better than the other.
I've built hive supers out of pine, oak, cedar, old barnwood, etc. I don't think I'd use cedar again for supers, although it works great for the landing board & frame and will probably last for more than 5 years unfinished. I don't finish most of the supers I build, although sanding them smooth & rubbing in a coat of linseed might give them an extra year or 2?
I bought a bunch of supers that were painted inside & out with aluminum exterior oil based paint & they deteriorated (rotted inside) faster than any wood I have left untreated. Natural wood probably "breathes" better and is just as cool as paint.
You don't have to paint everything white. Chromium oxide green and other iron oxides reflect as much infrared as white and don't stick out like a sore thumb.