I have already answered this question and it was accepted by the person asking it. Please see my answer.
The roof is a common part and is used jointly by all the owners (the building). The land company does not have the right to deny the owner the right to use it as long as this does not endanger the safety of the building. the house or harm the interests of the other co-owners, you do not hesitate to use it! You can report this matter to the urban construction administrative department and fight for your legitimate rights and interests, or you can directly file a lawsuit and defend your rights in the court where you are located. You will definitely win! Good luck to you!
Without the agreement of the property management company, it is prohibited to install planters, anti-theft guardrails, windows, antennas or sunshade grilles on the exterior walls of the building or on THEroof terrace." The agreement was unclear. The owner is prohibited from installing a solar water heater. Therefore, although it is based on an agreement between the two parties, the owner, Ms. Jia, has the right to install a solar water heater on the roof.
If the owner installs a solar water heater on the roof, it may harm the legitimate rights and interests of others. The general meeting must first stipulate in the “Interim Management Statute” or “Management Statute” that this behavior is prohibited. After making the stipulation, the owner must no longer install solar water heaters .