I have a small cavity, 3" wide, 8" long which used to be only about 1" deep near the bottom of an old oak. I put roofing cement on it a few years back to provide a barrier from insects. Unfortunately, it either didn't work or ran out over time. Now the wound is another inch deep and shows signs of insect damage. Fresh looking wood exposed. What would be the best way to fill this cavity? I have heard some warnings against using concrete, but I have had several very healthy trees removed that had large cavities filled with concrete and appeared to be healthy. Any ideas on what to use for fill woould be appreciated, as well as any ideas on how to treat for the insects that are there prior to filling.
- posted
19 years ago