1. Performance requirements for roof tiles for photovoltaic system installation
1. Structural strength and bearing capacity
Requirement: Roof tiles must have sufficient mechanical strength to support the weight of photovoltaic modules (about 15~30kg/m²) and loads such as wind pressure and snow pressure.
Reason: The photovoltaic system needs to be exposed to the outdoors for a long time, and insufficient structural strength will lead to the risk of roof deformation or collapse.
2. Durability and weather resistance
Requirement: UV resistance, corrosion resistance, and aging resistance, and the lifespan must match the photovoltaic modules (25~30 years).
Reason: Traditional roofing materials (such as ordinary ceramic tiles and asphalt tiles) are prone to aging and need to be replaced frequently, increasing maintenance costs.
3. Waterproof and sealing
Requirement: The roof tiles themselves must have excellent waterproof performance, and the connection with the photovoltaic modules must be strictly sealed.
Reason: The installation of traditional photovoltaic brackets requires penetrating the roof, which is easy to damage the waterproof layer and cause water leakage hazards.
4. High temperature resistance and heat dissipation performance
Requirement: Able to withstand the high temperature generated by the operation of photovoltaic modules (up to 80°C in summer) and effectively dissipate heat.
Reason: High temperature will accelerate material aging, reduce photovoltaic efficiency, and even cause fire risks.
5. Fire resistance
Requirement: Meet the building fire protection level (such as Class A non-combustible materials).
Reason: Photovoltaic systems may cause fires due to electrical failures, and roofing materials need to be flame retardant to delay the spread of fire.
6. Lightweight design
Requirement: Light weight to reduce additional loads on building structures.
Reason: Old buildings have limited load-bearing capacity, and lightweight can expand the scope of application.
7. Ease of installation
Requirement: Compatible with photovoltaic systems, simplify installation processes, and reduce construction costs.
Reason: Traditional photovoltaic brackets are complex to install, time-consuming and labor-intensive.
Advantages of Himei waterproof tiles
1. Super long weather resistance, resonating with photovoltaics
TPO has a stable molecular structure, is resistant to UV rays, ozone, and acid and alkali corrosion, and its performance does not decay at extreme temperatures from -40℃ to 120℃. Its service life is up to 30 years+, which perfectly matches the life of photovoltaic modules;
The steel plate is added with a high barrier anti-corrosion layer, and its corrosion resistance is 6 times that of ordinary roof tiles, eliminating rust perforation.
2. No water leakage, protecting the roof safety
The roof layer welded into a whole achieves the waterproof effect of “water storage and no leakage” to resist strong winds and rainstorms;
After the photovoltaic bracket is fixed with self-tapping screws, the matching TPO waterproof gasket is welded and sealed, and there is no leakage point on the entire roof, eliminating the hidden danger of leakage.
3. Reflective cooling, improving power generation efficiency
The surface of the light-colored waterproof tile can reflect more than 80% of solar radiation, reduce the roof temperature by 5-8℃, reduce the heat loss of photovoltaic modules, and increase the power generation efficiency by 3%-5%.
4. Quick installation, worry-free throughout the entire life cycle
After the roof is damaged, you only need to weld a layer of TPO on the roof to repair it. It is maintenance-free and does not require renovation for 30 years, saving operation and maintenance costs.
The light-colored waterproof tile surface can reflect more than 80% of solar radiation, reduce the roof temperature by 5-8℃, reduce the heat loss of photovoltaic components, and increase the power generation efficiency by 3%-5%.
5. Heat insulation and cooling, improve the efficiency of photovoltaic systems
When photovoltaic panels absorb solar energy to generate electricity, they will generate a higher surface temperature. Himei waterproof tiles have a heat insulation effect. Through TPO, heat is blocked from conducting to the roof, which can reduce the temperature of the back of the photovoltaic panel by 5-15℃, and it is expected to bring 3%-8% power generation efficiency;
The upper photovoltaic power generation and the lower waterproof tiles block heat, which can reduce the room temperature on the top floor of the building by 3-5℃ and reduce air conditioning energy consumption by 15%-25%.
6. Matching flame-retardant PVC waterproofing membrane, safety guarantee
The photovoltaic system is prone to fire hazards caused by electric arcs. In addition to TPO membranes, Himei waterproof tiles can also be matched with PVC waterproofing membranes. It uses a composite flame-retardant formula to reduce the combustion reaction by endothermic decomposition when exposed to high temperatures, and at the same time forms a dense carbonized layer to isolate oxygen and effectively block the spread of flames;
It complies with GB8624 B1 standard, ensuring that the material has self-extinguishing properties under open flames, greatly delaying the spread of fire, and buying critical time for emergency response.
