Photovoltaic roofs have become a trend, and the problem of roof leakage has reached a critical point that must be improved.
Leakage is the biggest pain point of rooftop distributed photovoltaics
Rooftop distributed photovoltaic power generation specifically refers to photovoltaic power generation facilities that operate on the roof of user buildings, with the characteristic of self consumption and excess electricity on the user side, and are balanced and regulated in the distribution system
China has abundant rooftop resources, and there is enormous potential for the development and construction of distributed photovoltaic systems on rooftops.
At the same time, the problem of roof leakage in buildings generally restricts the large-scale development of distributed photovoltaic systems on roofs to a certain extent.
The common processes for waterproofing roofs with photovoltaic modules include gluing, aluminum foil tape bonding, color steel tile substrates, customized flow guide brackets, customized component frames, and BIPV specific components.
The current installation process of photovoltaic brackets is mostly through type, which will cause damage to the original waterproof layer. Improper treatment at the punching point will cause leakage.
Especially for metal roofs like colored steel tiles, it is easy to cause looseness at the joints of the metal roof during construction, resulting in leakage.
In addition, due to the aging of metal roofs, aging of photovoltaic modules, or structural design defects, it is easy to cause leakage problems in photovoltaic roofs.
Water leakage in buildings can also seriously affect the operation of photovoltaic power stations.
Leakage will cause the photovoltaic power plant to suspend operation or even be completely dismantled for waterproofing repairs, greatly increasing the workload and difficulty of building renovation.
Moreover, for the factory buildings where rooftop photovoltaics are mainly used, once water leaks, in severe cases, it will cause the factory buildings to stop production and cause greater economic losses. Therefore, factory owners need to pay more attention to waterproofing.
So, not using waterproofing solutions or not valuing waterproofing may accelerate short-term returns and increase surface efficiency, but in fact, it will have a significant impact on the long-term investment return level.
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The advantages of super weather resistant IIR-PVDF fluorocarbon film in photovoltaic roof waterproofing
Ultra weather resistant IIR-PVDF fluorocarbon film is a type of non asphalt based self-adhesive roll material, which not only has excellent weather resistance (low temperature resistance, heat resistance, UV resistance), convenient operation, and can meet the first-class waterproof standard in one construction, but also has no pollution throughout the manufacturing and use process.
The soft and ultra weather resistant IIR-PVDF fluorocarbon film consists of five parts: release film, butyl adhesive, polyester film, adhesive, and PVDF fluorocarbon film.
By bonding PVDF film with polyester film using adhesive, a high-strength PVDF composite film is formed.
Butyl adhesive is applied to the surface of the polyester film to form a self-adhesive layer, which is then covered with a release film to form a shape.
Among them, butyl rubber, liquid rubber, resin, reinforcing filler, functional additives and other materials are produced into butyl rubber through kneading and blending reactions.
The chemical structure of butyl rubber determines that it has a series of excellent characteristics: UV resistance, good airtightness, good low-temperature flexibility, good thermal stability, good resistance to ozone and climate aging, good chemical corrosion resistance, and so on.
In addition, the main component of PVDF, polyvinylidene fluoride (a highly non reactive thermoplastic fluoropolymer), has tightly arranged molecular chains and strong hydrogen bonds, making it easy to color. It also has high anti fading and anti UV properties in extremely harsh and harsh environments, and is non flammable.