How is this plan for repairing load bearing rotting posts with epoxy (pics included)
The plan will make the 4x4s look good. However, you did say they are LOAD BEARING, an epoxy is great for holding things together or protecting things, but terrible at withstanding stress from a load. The posts function is to transfer the weight above it to the ground, so filling in the rotted parts of the wood with epoxy is just hiding the problem. Most epoxy adhesives rely on the stress being directed against thier cohesion to the material. When the stress is in a direction that is contrary to that the epoxy fails. If you wanted to glue two pieces together to double the load bearing capacity it would work great for that, but it can't take the load and replace the structural member yet. Maybe in the near future they will come up with something that can. Sorry to tell you this, but you are going to have to replace the 4x4 posts, or you run the risk of them tipping, or collapsing so that the structure comes down. It aslo would be a good time to bring them up to code. The good news is you can treat them so they are rot resistant for far longer now, and it is far cheaper than having the carport fall on your transportation.