With the widespread application of photovoltaic systems, the performance of the roof as the main load-bearing platform for photovoltaic panels is directly related to the safety and long-term stability of the system. Traditional roofing materials often have problems such as insufficient load-bearing, waterproof risks, and poor weather resistance in photovoltaic installation. Himei waterproof tiles have become an ideal choice for installing photovoltaic systems with their innovative design and technical advantages. This article will explore the core performance requirements of rooftop photovoltaic installation and analyze the adaptability advantages of Himei waterproof tiles.
1. Five core performances that photovoltaic roofs need to have
1. High load-bearing strength
The weight of the photovoltaic system can reach 15-30kg/㎡, and with the wind and snow load, the roof needs to have a dynamic load-bearing capacity of ≥30kg/㎡. Traditional color steel tiles are prone to deformation, and ceramic tiles have the risk of brittle cracking. Himei waterproof tiles use TPO and steel plate composite materials with an ultimate compressive strength of 5000kPa. They have passed the ISO 22407 wind resistance test and can withstand a level 13 typhoon.
2. Zero-leakage waterproof system
The conventional roof installation of photovoltaics needs to be penetrated and fixed, and the annual average leakage rate is as high as 12% (NREL data). Himei waterproof tiles adopt a fully enclosed welding overlap method, combined with a TPO waterproof layer to form a double waterproof barrier, and fix the photovoltaic bracket by gravity to avoid damaging the integrity of the roof.
3. Weather resistance
The photovoltaic system life cycle is up to 25 years, and the roof needs to withstand a 100°C temperature difference cycle. The Himei tile surface has been tested by QUV10,000 hours of accelerated aging, with a color difference ΔE<3, and the UV resistance level meets the ASTM G154 standard. Its -40°C low-temperature impact resistance is 3 times that of traditional materials, and it is suitable for extremely cold/high-heat environments.
4. Accurate installation of the base surface
The tilt angle error of the photovoltaic panel needs to be <1°, and the flatness deviation of traditional tiles is often up to ±5mm/m. Himei tiles provide ±0.5mm/m flatness, pre-set photovoltaic rail slots, and achieve fast and accurate alignment installation, improving construction efficiency by 40%.
5. Fire prevention
Building regulations require that the fire protection level of the roof should be ≥ B1. Himei tiles can be matched with PVC waterproof membranes, which have the characteristic of being extinguished immediately when away from fire.
In the “photovoltaic +” era, the roof has evolved from a simple building enclosure structure to an energy production carrier. Himei waterproof tiles have overcome key technical bottlenecks such as load-bearing, waterproofing, and durability through material revolution and system innovation, and its scientific design parameters match the photovoltaic system.