Just one more point, if you are in dispute with the owner over who is responsible for the damage, you don’t have to repair the common property until the dispute is resolved. (See below)
106 Duty of owners corporation to maintain and repair property
(1) An owners corporation for a strata scheme must properly maintain and keep in a state of good and serviceable repair the common property and any personal property vested in the owners corporation.
(2) An owners corporation must renew or replace any fixtures or fittings comprised in the common property and any personal property vested in the owners corporation.(4) If an owners corporation has taken action against an owner or other person in respect of damage to the common property, it may defer compliance with subsection (1) or (2) in relation to the damage to the property until the completion of the action if the failure to comply will not affect the safety of any building, structure or common property in the strata scheme.