Solar installation plan for flat-roofed residences

The solar installation plan for flat roof residences needs to comprehensively consider the roof structure, component layout, waterproofing treatment and wind resistance design. The following are the specific key points:

Roof structure and load-bearing capacity assessment

Before installing a solar system on a flat roof, it is necessary to assess the roof's load-bearing capacity to ensure that it can support the weight of components, brackets, etc. If the roof's load-bearing capacity is insufficient, reinforcement measures should be taken, such as adding roof support structures or using lightweight components, to ensure installation safety.

Component layout and inclination Angle design

When installing on a flat roof, components should not be laid flat. A certain inclination Angle should be designed to improve the power generation efficiency. The setting of the inclination Angle should be combined with the local latitude and sunlight conditions. Usually, the recommended inclination Angle values in the appendix of the regulations can be referred to. At the same time, it is necessary to avoid the parapet wall or other adjacent shading objects blocking the components, and ensure that there is sufficient sunlight between the components on the Winter Solstice. When arranging the components, the minimum distances between the front and back rows and from the shading objects should be calculated based on the height Angle and deflection Angle on the winter solstice to reduce the influence of shadows.

Waterproof treatment and installation methods

Waterproofing treatment for flat roofs is of vital importance. During the installation process, it is necessary to avoid damaging the original waterproof layer. Installation methods such as additional type, ballast type or pile foundation type can be adopted, and the appropriate installation method should be selected according to the roof material. For instance, the color steel tile roof can adopt an additional type, directly laying the components flat on the color steel tiles. For cement roofs, ballast type or concrete foundation pile type can be adopted. When installing, it is necessary to ensure that all penetration points and joints are properly sealed to prevent water infiltration.

Wind-resistant design and safety measures

When installing a solar system on a flat roof, the local maximum wind speed should be taken into account to ensure that the system can withstand extreme weather. The design of the support frame should meet the wind resistance requirements and be firmly connected to the roof. Meanwhile, lightning protection devices should be installed to ensure the lightning protection safety of the system. Before extreme weather conditions such as typhoons arrive, the system needs to be inspected and reinforced to prevent components from being blown off.

Operate and maintain passageways and fire evacuation

When installing a solar system on a flat roof, it is necessary to reserve an operation and maintenance passage to facilitate later maintenance and inspection. The operation and maintenance passageways should be arranged along the open surfaces such as courtyards, and guardrails that meet the requirements of the specifications should be set up. In addition, it is necessary to ensure that the photovoltaic array and lines do not affect the fire evacuation passage on the roof. The power generation system pipelines should not pass through the roof. When it is necessary to pass through, waterproof sleeves should be pre-buried and waterproof sealing treatment should be done well.