I've got a well head cabinet/enclosure to make which is in a remote location, about a 2 mile hike through the mountains without any trails. I've spent a few hours making measurements, and we will likely make this in sections, and strap them to our backs and assemble it in the field. There is no electricity there and it is very rough terrain, making footings or site building is not an option, we just have to put this thing on the dirt and its back side against the mountain. It will rot, I get that. Our existing one was heavily painted and has lasted since 1980, but it is rotted.
The plan is to use PT lumber, prime it at least twice, and a color coat with about 3 coats, and I will use an expensive paint like Sherman Williams or Dunn Edwards.
But the bottom and back will soon be buried in muck.
Is there an additional sealant to the bottom and back I should consider? I'm thinking multiple coats of Flex Seal or a similar product. I assume I place this over the primed and painted cabinet at the bottom and back.
Any other suggestions?