Bob from San Diego Ca writes
I just installed a picket fence in my front yard. I used 4x4 square untreated cedar post anchored in cement. The part of the post that are buried in cement have been painted with tar to prevent moisture penetration. If I apply Bora-Care to the exposed part of the posts will it penetrate to the lower portions of the post and provide fungus and temite protection?
Bora-Care will penetrate some into the lower portions below the poured concrete, but it all depends on how deep the beams go. Of course any penetration into the part of the wood that is underground is of course better than not treating the wood at all. You can ensure the product spreads deeper into the wood if you drill some small injection holes at a downward angle into the center of the wood from the exposed part at the concrete level down into the center of the wood below the concrete level.
Answer last updated on: 08/23/2011