Untreated wood can be susceptible to fungus and weather. You should treat it with pine tar to ensure proper protection of the wood. Pine tar is a type of wood preservative that can form a protective barrier against fungus, mold, and water. By putting the tar on it, essentially, the wood is coated with artificial bark.
Tar is not the same as treating it with something that completely penetrates and allows water to enter and leave the wood. A brush is a suitable way to use tar on wood. A layer of pine tar is all that is needed. Pine tar preserves wood as a natural preservative, providing a breathable barrier against moisture.
In addition to being environmentally friendly, wood is nourished and insects are protected. Paint the fence posts so that they are completely covered with the tar on the roof. Use the end of the brush to work the tar into any of the grooves or crevices in the fence posts. You need a full coating to keep insects and rot off the posts.
Do not worry if the tar looks uneven, it has a functional purpose, not an aesthetic one. Pine tar acts as a natural wood preservative, providing a breathable protective barrier against moisture and sunlight. It is easy to maintain, nourishes wood and provides protection against insects, such as termites and ants. Some outbuildings and barns have been preserved with pine tar wood treatment for many years with very little maintenance.
In a centuries-old process, pine stumps and roots were slowly burned in special kilns to produce pine tar. The process may have changed over the years, but the reasons why pine tar is still used to paint wood exteriors remain the same. Painting with pine tar is quite different from using paint. If you want to paint with pine tar, here are some factors you need to consider.
Apply roofing tar to wood, but only to wood that will be directly below the floor surface. The tar should be applied to the wood with a brush. A single layer will suffice. This can be paint or tar, I use roofing tar since it's cheap and I usually have something on hand for repair work.
Before pressure-treated wood, it was a practice to cover the ground part with tar to prevent rotting. Roofing tar will take 12 to 24 hours to cure, depending on weather conditions, such as humidity. Anyway, I just sealed my driveway with a tarry paint substance that seems quite waterproof and I wonder if smearing some of that on the bottom and bottom would be a good way to seal the part of the post that is underground.