Hello, what you want to ask is that the installation of fitness gantry at home caused the roof downstairs to crack. What should I do? According to relevant information, the installation of fitness gantry at home caused the roof downstairs to crack. You should negotiate with the downstairs owner in time to solve it and repair it quickly. According to the query of Article 1 166 of the Civil Code of People's Republic of China (PRC), if the actor causes damage to the civil rights and interests of others, regardless of whether the actor is at fault or not, the law stipulates that he should bear tort liability, such provisions shall prevail. Article 167 Where an infringement endangers the personal and property safety of others, the infringed party has the right to demand the infringer to bear the tort liability of stopping the infringement, removing the obstruction and eliminating the danger. Article 184 If the property of another person is infringed, the property loss shall be calculated according to the market price at the time of the loss or other reasonable methods. Article 187 After the damage occurs, the parties may negotiate the payment method of the compensation fee. If cracks appear in the downstairs house caused by the upstairs, the upstairs owner shall bear the tort liability, and the victim may request the safety appraisal of the house and compensate for the losses. Therefore, the installation of fitness gantry at home leads to the cracking of the downstairs roof, so it is necessary to negotiate with the downstairs owner in time to solve it and repair it quickly.