“I am sorry, this sounds like a frustrating situation to be in! Water damage is often one of the most confounding things for policyholders because the insurance typically only covers sudden and accidental damage (like water damage occurring from a burst pipe). Often, water damage occurs gradually over time and remains undetected until major damage has been done.
That being said, this really sounds like something you shouldn’t have to worry about. If you are a renter, this is the landlord’s issue and their policy would need to cover the repairs, or they would need to pay out of pocket. Your renters policy should cover your personal property that was damaged. It would be best to inform your carrier of the situation, and you may need to involve a lawyer. Your carrier won’t pay for the condo repairs, but they may help with legal fees if you are sued for liability or help you bring action against the landlord’s policy.