Now that we know about the various types of rooftop solar PV systems, let’s move on to the next step and understand how these are mounted on to the roofs of commercial buildings. To begin with, there are two primary mounting methods. Let’s take a look at the pros and cons of each:
· Attached Racking: This mounting system uses hardware for roof penetration to mount solar PV systems onto practically any type of roof. Attached racking systems come in various types, depending on their applications. The number of roof penetrations your solar system will require depends on the design and structure of the roof, local building and regulatory codes and of course, the solar system’s design. The greatest advantage of this mounting method is that it can used either for flat or sloped roofs while the disadvantages include the system being more difficult to install than ballasted racking, the second type of mounting we will discuss shortly. Other disadvantage is that faulty roof penetrations can potentially hamper the weather-neutral roof integrity.
· Ballasted Racking: This mounting system makes use of concrete blocks or other heavy weights to anchor PV systems onto a flat roof. Quite a few hybrid-ballasted use roof-penetrating anchors and ballasts in combination to mount solar PVs to roofs. Some major advantages of ballasted mounting include its simplicity of installation and that they need almost no roof penetrations. On the other hand, they can only be mounted on to flat roofs that can support the ballast weight. Hybrid-ballasted systems are at an increased risk of roof leaks in case of a faulty roof. These also often require more complicated wind-loading evaluations prior to installations.
Source: The Hindu Businessline
To understand these methods in greater detail, do contact us and make way for effective solar PV installations.