Coating the post base with asphalt roofing cement driveway sealer tar or a bituminous self adhesive flashing tape are fairly common practices.
Roof sealnt fence post.
They are being sealed to preserve against decomposing.
Place about 6 in.
Brush the bottom third or bottom half of the fence post with waterborne copper naphthenate a wood preservative that is free of arsenic and chromium.
Of aggregate in the bottom of the posthole to allow for drainage.
In this video i show how the old timers use to treat protect fence posts from rotting.
They would reuse or as we say today re purpose old motor oil.
Prepping to apply sealer to the tops fence posts hoping we will get a day over 50 degrees i went around with straight bleach over the tops today.
Brush the preservative on the entire post if.
Available at some paint stores and home centers this wood treatment is specifically designed for in ground applications.
Already have the epoxy sealer.
Soak the bottom of the posts in a wood preservative containing copper napthanate such as cuprinol.