1. As an integral part of the building structure, the "terrace" was originally open. It has its own insulation layer and waterproof layer. Why do you want to install a "sun visor"? Who installed this board? What is the purpose of pretending? Is a car owner trying to use it exclusively? If so, there is reason not to maintain the damaged property.
2. The "terrace" belongs to the public part of the building (unless the whole building is used by only one household) and cannot be used for private purposes. Natural parts on the terrace, such as railings, rainwater pipes, ground waterproof layer, lightning protection zone, etc. , are under the jurisdiction of the property. If there is natural damage, it belongs to the responsibility scope of property maintenance; If the damage is caused by the unauthorized use of the family, the property should bear the responsibility.