The mounting system is the foundation of every photovoltaic system. It not only supports the weight of the solar modules but also reliably transfers wind and snow loads to the roof structure or the ground. A well-designed mounting system guarantees the safety, longevity, and efficiency of the entire PV system – and significantly influences the installation effort and stability. In this article, we explain how a mounting system is constructed, what variations are available, and why CLEVER-TILE ® offers a particularly intelligent solution for roof-friendly and time-saving installations.

What is a support system?

A support system (also called a mounting system) refers to the *mechanical substructure* on which photovoltaic modules are attached. It establishes the connection between the building (e.g., roof) and the solar modules. A good support system ensures that:

  • the modules are securely attached
  • no damage to the roof will occur,
  • All static requirements must be met.

What does a PV mounting system consist of?

A typical support system for rooftop installations consists of the following components:

  • Roof hooks or fixing points: connection to the roof structure
  • Mounting rails: profiles laid lengthwise or crosswise, on which the modules rest.
  • Module clamps: Holders for fixing the modules (mid and end clamps)
  • Fasteners: screws, nuts, adapter plates, etc.

Depending on the type of roof (tiles, sheet metal, flat roof), the design of the support system varies considerably.

Comparison of support systems

🧱 Rooftop systems

Most common type. The solar panels are attached to the existing roof using roof hooks. Ideal for retrofitting.

🏗️ In-roof systems

The PV modules replace the roof covering. The support system is integrated into the roof structure. Visually appealing, but technically more demanding.

🏢 Flat roof systems

Use ballasted support systems with raised mounting. No roof penetration, but increased wind load compensation is necessary.

🌿 Open-field support systems

Large installations on open land with foundations, screw anchors, or driven piles. Solid and durable, but not relevant for buildings.

Key requirements for a good support system

✔️ Statics and load transfer

A load-bearing system must reliably absorb snow, wind, and dead loads. Correct force distribution across the roof structure is crucial.

✔️ Corrosion protection

The materials (usually aluminium or stainless steel) must be permanently corrosion-resistant – especially important in changing weather conditions.

✔️ Ease of assembly

An easy-to-install support system saves time and money and reduces potential errors. Pre-assembled components offer a significant advantage here.

✔️ Roof-friendly connection

Ideally, the fastening is done without grinding, cutting or penetrating the water-bearing layer – this minimizes the risk of leaks.

CLEVER-TILE ® support systems – Innovation meets roof protection

CLEVER-TILE ® offers a unique support system based on a *patented replacement tile with an integrated roof hook*. The system replaces the conventional connection between roof hook and tile – and thus also its weaknesses.

Advantages of the CLEVER-TILE ® support system:

  • 🧩 No modification of the roof tiles is necessary
  • 🏠 No roof penetration – complete preservation of the roof membrane
  • ⚖️ Even load distribution through defined hook position
  • 🛠️ Compatible with common mounting rails and module sizes
  • 🕒 Enormous time savings thanks to pre-assembled system components

Typical areas of application

– 🏡 *Single-family homes with tiled roofs – 🏚️ Old buildings with sensitive roof structures – 🏢 Commercial buildings with PV retrofitting – 🔧 Roof renovations with planned PV integration*

Conclusion: The support system determines quality and lifespan

A stable, well-planned support system is the foundation for a durable and high-performance PV system. Choosing roof-friendly systems like CLEVER-TILE ® means investing not only in a sustainable energy future but also in preserving the value of your building. By combining safety, ease of installation, and innovation, CLEVER-TILE ® takes support systems to a new level. Learn more here

Referenced terms and sources

This existing glossary article was reviewed and approved on 14 October 2026. Time-sensitive information still refers to its original publication context unless the article states otherwise. It does not replace installation instructions or confirm compatibility with a particular roof tile model.

Machine-assisted translation. The German version remains available.

Data sheet and installation guideOriginal source