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BIPV waterproof roof mounting structur is a product form in the field of Building-Integrated Photovoltaics. The building sector, as one of the main sources of carbon emissions, is driving energy structure transformation. BIPV waterproof roofs break through the traditional "building attached photovoltaics" model, using solar modules directly as part of the building material, replacing traditional metal roof panels or tiles, thus enabling the roof itself to serve both power generation and external envelope functions.
Product Description
BIPV (Building Integrated Photovoltaic) roof mounting solution is an integrated roofing system whose core logic is to use photovoltaic modules as both power generation units and building waterproofing layers. Unlike traditional BAPV (building attached photovoltaics) roofs where photovoltaic panels are installed separately on top of corrugated steel roofs, BIPV roofs structurally combine photovoltaic panels, drainage channels, and supporting joists into a single unit, forming a prefabricated roof that can be directly installed onto the purlins.
Constructively, the system typically consists of a grid-like drainage frame formed by longitudinal main drainage channels and transverse secondary drainage channels. Photovoltaic panels cover the channels, and rainwater flows through the surface of the photovoltaic panels into the channels before being collected and discharged into the eaves gutters. The solution also include skylight, so such design balances light transmission, load-bearing capacity, and fire resistance. The entire system is connected to the main building structure, and can be adapted to various roof forms such as steel structure and concrete.
Product Components
Advantage
▶ Waterproofing Performance:
BIPV waterproof roofs prioritize drainage as their core waterproofing strategy. A drainage system and water channeling system actively guide rainwater flow, preventing water accumulation and seepage. Vertical and horizontal channels form a complete drainage network, reducing the risk of leakage from a structural perspective.
▶ Fire Resistance:
The system primarily uses non-combustible or flame-retardant materials. The photovoltaic module surface is tempered glass, achieving an overall fire rating of A or A2.
▶ Wind Resistance and Load-Bearing Capacity:
The photovoltaic modules are integrated with the building structure to form a stable whole, offering superior wind resistance compared to traditional rooftop photovoltaic solutions.
▶ Power Generation Efficiency and Installed Capacity:
Modules typically utilize high-efficiency cell technologies such as N-type TOPCon or BC, with high conversion efficiencies. Walkway can be integrated in the solution, no extra maintenance access is required on the roof, increasing installed capacity by approximately 10% to 30% for the same area.
▶ Building Load Optimization:
Compared to the split solution of "traditional metal roof + additional photovoltaics on it," BIPV systems reduce building load through integrated design. The roof don't need metal sheet.
▶ Installation and Maintenance Convenience:
Prefabricated design and standardized module dimensions result in high on-site construction efficiency. The walkway design allows maintenance personnel to conduct inspections and cleaning operations on the roof without the need to build additional maintenance access routes. No adhesive is used, so after installation, each one solar module could be removed easily, which makes replacement simpler.
Parameters
| Base Type | BIPV Roof |
| Wind Load | up to 60m/s |
| Snow Load | 1.4kn/m² |
| Tilt Angle | ≥3° |
| Standards | GB50009-2012, EN1990:2002, ASE7-05, AS/NZS1170, JIS C8955:2017, GB50017-2017 |
| Material | Zinc-aluminum-magnesium steel |
| Warranty | 10 Years Warranty |
Applicable Scenarios
▶ Industrial and commercial plants
Industrial factory roofs have large areas and suitable slopes, which are the main application directions for BIPV waterproof roofs. It is especially suitable for existing factory building renovation projects that face problems such as aging roofs, leaks, and corrosion of metal roofs. Roof renovation and photovoltaic construction can be completed simultaneously in one construction. For industries that are sensitive to the production environment, such as textiles, electronics, and precision manufacturing, BIPV systems can improve roof waterproofing and heat insulation properties while generating electricity.
▶ Warehousing and Logistics Center
Warehouse buildings have high requirements for waterproofing and structural stability. The BIPV system can directly replace traditional metal roof and has the functions of power generation, waterproofing and load-bearing, reducing the frequency of subsequent maintenance.
▶ Public buildings
It is suitable for roof renovation or new construction projects for large public buildings such as stations, airports, stadiums, schools, etc.
▶ Green renovation of existing buildings
For existing buildings that have carbon reduction needs but limited budgets, BIPV waterproof roofs are a solution that combines functional upgrades and energy production. It is especially suitable for old buildings that need to simultaneously solve roof leakage problems. For new buildings, the BIPV system can be used as a roof selection plan in the design stage to achieve simultaneous design and construction of photovoltaics and buildings.
▶ Carports and corridors
Some lightweight BIPV products can be used in parking lot canopies, wind and rain corridors and other scenarios. The PV modules themselves can be used as sunshade and lighting structures, while generating electricity.
Important Notes:
▶ Roof Structure Assessment
Before construction, the load-bearing capacity of the existing roof should be assessed to ensure it meets installation requirements. For older roofs, the integrity of the main structure, such as purlins, must be confirmed, and reinforcement should be carried out if necessary.
▶ Waterproofing Treatment
The installation of waterproof mounting system and solar PV panels must be strictly carried out acccording to Solar First's drawings and instruction, with recommended installation tools. Any change on the installation should be approved in advance.
▶ Electrical Safety and Lightning Protection Grounding
The metal frame and support system of the photovoltaic modules must be reliably grounded to prevent lightning strike risks and ensure the safety of maintenance personnel. Cable laying should be properly protected to avoid exposure to rainwater corrosion.
▶ Construction Environment and Operating Procedures
Roof construction is strictly prohibited in rainy or windy weather. When installing on sloping roofs, it is recommended to use safety measures such as footboards to prevent personnel or tools from slipping.
▶ Transportation and Storage
During transportation, photovoltaic modules should be protected from squeezing and severe vibration. Before installation, check the modules for completeness of appearance and the integrity of the waterproof structure. Double-glass modules should be protected from impacts by sharp objects during storage and use.
▶ Long-Term Maintenance
It is recommended to conduct a comprehensive inspection at least twice a year, focusing on the smoothness of the drainage system, and the cleanliness of the module surface before and after the rainy season. In dusty or windy areas, cleaning frequency should be increased to ensure power generation efficiency.
Summary
BIPV (Building Integrated Photovoltaics) waterproof roofs integrate photovoltaic power generation with building envelope functions, representing a restructuring of the traditional "build first, install PV later" model. The core value of this product lies in: solving roof leakage problems through a drainage-led waterproofing system, achieving green electricity supply through high-efficiency photovoltaic modules, and reducing building load through integrated design. Market validation shows that BIPV waterproof roofs have good applicability in industrial and commercial plants, warehousing and logistics facilities, and public buildings, achieving multiple goals of building energy conservation, carbon reduction, and operational benefits.
Solar First is a leading companies that has accumulated sufficient technical expertise in waterproofing structures, fire resistance, and wind resistance, resulting in an increasingly diverse range of product options. However, it is important to note that as a building related product, the performance of BIPV waterproof roofs is highly dependent on installation quality and subsequent maintenance. For building owners interested in adopting this product, it is recommended to do a thorough understanding of their own roof conditions and electricity needs, in order to maximize the benefits of the solution.
Solar First Project Reference
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