Sep 29, 2011 - 7 min - Uploaded by brokkenstarHow to properly fill a cavity or hole in a tree. Free Ecw Jpeg 2000 Compressor Oil on this page.

Myron711 said: “ if i replace the tree, the tree will be smaller. Although norway is not the most spectacular of the maples. It is already 50' high and spledid in that respect. So i do want to keep it growing and thriving. What foam am i filling the hole with?

Will a tin sheet over the hole be a good permanent seal? Or is tin toxic to the tree?I wouldn't say the tin is toxic, just not very useful. Neither is the cavity filling foam though there could probably be a many page debate on this topic. Try searching, I'm sure this has been gone through many times before. The issue you have with a cavity is that a portion of the tree's much needed structural, holding wood has been compromised which makes it dangerous to keep.