I would think that if the roof leaked due to storm damage, it is an insurable event, and the structure of the building should be repaired by the OC covered by the insurance. If there is a problem with the insurance, the OC should ensure the damage is fixed promptly in any case. Everything the OC is responsible for should be fixed, but that might not include the paint in the unit. If, the roof damage were not fixed promptly and then further damage to private property occurred due to what by now is a known, unrepaired defect of the common property, then the OC would have to fix the private property that was damaged.