Can You Put Tar on Wood

Untreated wood can be susceptible to fungi and weathering. You should treat it with pine tar to ensure proper wood protection. Pine tar is a type of wood preservative that can form a protective barrier against fungi, mold, and water.

Can you tar over wood?

Apply roofing tar to the lumber, but only to wood that will actually be below dirt. Using a brush, brush tar onto the lumber. One coat will suffice.

How do you protect wood buried?

Soak the bottom 1 ft (0.30 m) of untreated posts in a wood preservative. If you’ve purchased untreated wood—or if you cut your lumber to shorten it—you need to treat your post before burying it. Purchase a wood preservative that contains copper naphthenate at a lumberyard or hardware store.