In South Africa, probably the most durable paint for hives is branded Everbond. It's UV-resistant and waterproof, and typically used, for example, to seal joins on roofs and to seal koi ponds, etc. I use it on untreated wood and it goes on like a disease and maintains a rubbery kind of texture. Given a choice, I buy woodenware that has been hot-dipped with creosote. This must be the single best long-term way to protect bee furniture. CCA treatment is almost as good, but needs subsequent painting to counter the dryness it infests the wood with. I also use Everbond to seal jumbo sugar syrup feeders - and it works like a charm. Barry Sergeant Kyalami South Africa