Rail girders are indispensable components in numerous applications, from the construction industry to renewable energy technology. They serve as a stable base for mounting components such as solar modules, facade elements, or industrial plants. Thanks to their flexibility and load-bearing capacity, rail girders offer a safe and efficient solution for a wide variety of projects. This article will tell you more about the properties, applications, and advantages of rail girders.
What are rail girders?
Rail girders are elongated, stable structural elements, often made of materials such as aluminum or steel. They provide a robust structure onto which other components can be securely mounted. Rail girders are characterized by their modularity and can be individually adapted to the requirements of a project. Thanks to their robust construction, they are suitable for both static and dynamic loads.
Properties of rail girders
Rail supports impress with their versatility and technical features:
- Highly durable: They can withstand heavy loads while offering stability.
- Corrosion-resistant: Materials such as aluminium and galvanised steel are resistant to weathering.
- Modularity: Rail supports can be flexibly combined and expanded.
- Easy assembly: Its design allows for quick and easy installation.
- Durability: High-quality materials ensure a long service life, even with intensive use.
Applications of rail girders
Rail supports are used in a wide variety of industries and applications:
1. Photovoltaic systems
Rail supports are a key component of mounting systems for solar installations. They enable the secure attachment of solar modules to flat roofs, pitched roofs, or open areas. Their flexibility allows them to adapt to different roof types and inclinations, while their stability ensures maximum safety.
2. Facade systems
When installing facade elements such as glass, metal, or ceramic, rail supports provide a stable substructure. They ensure not only safety but also the precise alignment of the elements, which is crucial for a high-quality appearance.
3. Industrial plants
In industry, rail girders are used for mounting machines, conveyor belts, and cable trays. Their load-bearing capacity and modularity make them ideal for demanding environments.
4. Interior finishing
Rail supports are also used in interior construction, for example for suspended ceilings, partition walls or lighting systems. They enable quick and flexible installation.
Advantages of rail girders
The use of rail supports offers numerous advantages:
- Flexibility: They can be adapted to different requirements and expanded modularly.
- Stability: Rail supports provide a robust foundation that can withstand even heavy loads.
- Cost efficiency: Their simple assembly and long lifespan reduce the overall cost of a project.
- Sustainability: Many rail supports are made from recyclable materials such as aluminum.
- Aesthetics: Especially in facade systems, rail supports ensure a precise and appealing appearance.
Rail supports in photovoltaics
One of the most prominent applications of rail girders is the installation of photovoltaic systems. They form the base on which solar modules are mounted and ensure their optimal orientation. Rail girders can be installed on various surfaces, including tile, metal, or concrete roofs. Their modular design allows for the construction of systems of any size and their expansion as needed.
Important considerations when selecting rail supports
The choice of the appropriate rail support depends on several factors:
- Material: Aluminum is lightweight and corrosion-resistant, while steel is particularly load-bearing.
- Load-bearing capacity: The load-bearing capacity must meet the requirements of the project.
- Mounting type: Should the rail support be mounted directly or integrated into an existing system?
- Environmental conditions: High corrosion resistance is important in outdoor areas.
Conclusion: Rail supports as a versatile solution
Rail girders are an indispensable element for safe and efficient assembly in various industries. Whether in photovoltaics, facade construction, or industrial applications – their stability, flexibility, and durability make them an ideal solution. With the right selection and planning, rail girders can not only ensure the safety of a project but also contribute to its cost-efficiency and sustainability.
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