If the downstairs ceiling is damaged due to the leakage of the floor heating upstairs, who should co

You can assert your rights against the owners of the upper floors.

Upstairs floor heating leakage must be the upstairs owner is responsible for compensation. If the floor heating is still in the warranty period, the owner can recover from the floor heating construction party or the developer after compensation, one is that the owner takes the house and rebuilds the floor heating, then the recourse is the decoration company that signed the contract with you, and the other situation is that the floor heating is there when buying a house, then you should go to the developer (see the purchase agreement). This is divided into two situations, the claim for quality problems is valid, and the claim for non-quality problems (such as improper use by the owner, external damage, etc.) is invalid, and the owner of the upstairs shall bear it.

If the expiration date has passed, the owner has to repair it himself.

In addition, under normal circumstances, underfloor heating is not a public facility, and the property is not free to maintain.