Apparently, painting hive boxes traps moisture in the hive, contributing to hive box rot - (especially with box-joint corners.) An unpainted body surely is more breathable; a better thing both for bees and the box. However, smooth, planed surfaces do not last long in outdoor conditions; (which is the major reason beekeepers paint them.) A planed surface will last maybe three years before totally succumbing to deterioration. Seeing as how rough sawn planks last decades in barns and out-buildings - in full sun and rain - wouldn't they last just as long as hive bodies? Has anyone ever used rough-sawn lumber for hive boxes? I would really like to know. Also, different wood apparently has different longevities. I've heard some say poplar is a very poor hive box wood, but others say it lasts a long time on barn walls and the like. I think the naysayers are judging the painted, planed boxes, (which likely deteriorate quickly from the inside.) I've also heard pine - both white and yellow - are good box wood choices. Again, does anyone have any experience using these woods - rough-sawn and unpainted - as hive bodies?