Today's residential buildings pay attention to energy saving. To reduce heat conduction (interior heat escapes to the outside in winter and exterior heat escapes to the interior in summer), high-rise buildings are wrapped with a layer of foam on their walls exteriors, and the foam is then covered with metal-covered plastic panels. . The thickness of the two layers varies from 10 to 40 mm.
Installing wall-mounted solar energy will destroy the insulating layer of the exterior wall. The structure of the insulation can also make safe and secure installation difficult: after all, your equipment cannot be pressed against a hard wall but hangs from the insulation. Therefore, what the real estate company says makes sense.