Solar module mounting

Module mounting is a crucial step in the installation of photovoltaic systems. It significantly determines the efficiency, safety, and longevity of the entire PV system. However, not all module mounting is the same: depending on the roof type, substructure, and mounting system, the requirements vary considerably. In this article, we explain what's important when mounting solar modules – and show why sophisticated systems like CLEVER-TILE ® not only simplify the work but also improve the quality of the entire installation.

What is meant by module assembly?

Module mounting refers to the professional installation and mechanical fastening of photovoltaic modules onto a mounting system. The modules are mounted either parallel to the roof (surface-mounted), integrated into the roof, or on a raised platform. The choice of mounting method depends on the roof shape, orientation, angle of inclination, and structural conditions.

Requirements for safe module assembly

Load-bearing roof structure

Before the modules are installed, the roof structure must be inspected. It must be able to safely support the additional weight of the PV modules, substructure, snow load, and wind pressure. A structural analysis is essential, especially for older buildings or renovations.

Weather and working environment

Module installation should ideally be carried out in dry weather to avoid unnecessarily endangering the roof and to ensure electrical safety. Occupational safety measures such as fall protection are also mandatory.

Professional mounting system

A high-quality mounting system typically consists of roof hooks, mounting rails, and module clamps. It ensures that the solar modules are securely in place, do not slip, and can withstand all environmental influences over the long term.

Typical assembly steps during module assembly

1. Attaching the roof hooks

The roof hooks are attached to the roof battens and guided through the roof tiles. It is crucial that the tiles are not damaged – specially shaped roof hooks, like those used with CLEVER-TILE ®, are used for this purpose.

2. Assembly of the rail systems

Aluminum rails or mounting rails are attached to the roof hooks. These form the support system for the modules. Correct alignment and screw fastening are essential for the later efficiency of the system.

3. Laying out the solar panels

The PV modules are placed on the mounting rails and secured with mid clamps and end clamps. It is important to ensure even spacing and a flush fit.

4. Electrical wiring

After the modules are mechanically mounted, they are electrically connected. This is usually done in series (string). Qualified electricians take care of the grounding, string wiring, and connection to the inverter.

Overview of mounting types

• Roof-parallel mounting: The most common method for pitched roofs. The modules follow the roof slope.
• Mounting: Especially used on flat roofs to achieve the ideal angle of inclination to the sun.
• In-roof mounting: The modules replace the roof covering – visually appealing, but more complex to implement.

Challenges in module assembly

✔️ Avoid roof penetrations

Every penetration of the roof membrane carries the risk of leaks. Therefore, it is crucial to use mounting systems that require as little grinding, drilling, or cutting as possible – such as CLEVER-TILE ®, where replacement tiles with integrated hooks are used.

✔️ Stress-free mounting

Modules must not be mounted under tension, as this can lead to microcracks in the cells and power loss. Correct alignment and a backlash-free, but not strained, mounting are essential.

✔️ Clean cable routing

Loose cables increase the risk of damage from wind or animals. Proper cable routing extends the system's lifespan and minimizes maintenance.

Modular assembly with CLEVER-TILE ® – Efficient, safe, well-designed

No drilling. No grinding. No compromise.

The CLEVER-TILE ® solution is based on an innovative replacement tile with an integrated, specially shaped roof hook. This means: no damage to the original tiles, no time-consuming on-site adjustments, and no unwanted roof penetrations.

Pre-assembled systems for quick installation

The system allows for quick and easy installation directly onto the prepared brick – ideal for serial installations or time-sensitive projects. The pre-assembled components save time and reduce potential errors.

Ideal for new construction, renovation and retrofitting

Whether for new construction, roof renovation or retrofitting a PV system: CLEVER-TILE ® is flexible and saves valuable time thanks to its intelligent mounting system – without compromising on safety.

Conclusion: Proper module installation is the foundation for every photovoltaic system

The quality of module installation determines the yield, safety, and lifespan of a solar power system. Those who rely on well-designed and field-tested systems like CLEVER-TILE ® secure a competitive edge in efficiency and longevity. Professional module installation means not only technology, but also trust – in the materials, the planning, and the installers. More information here