Deadwooding involves removing all dead limbs from the canopy of tree. This makes the tree safer.
The careful pruning cuts involved in deadwooding allow the tree to heal properly and remain healthy. If dead branches are left to tear from the tree it can cause long-term damage to the stem and enable decay to get in.
Branches or limbs that have died can be easily identified as they will have no buds or leaves, may be discoloured or growing fungus and look brittle and crumbly.