Created on: 2 February 2026
Solar systems are now a key component of a more sustainable energy supply. They enable the local generation of clean electricity, reduce energy costs and offer the opportunity to become less dependent on rising electricity prices. Whether for private households, commercial enterprises or public institutions, the added value of having your own solar system means long-term cost-effectiveness, active climate protection and a secure energy supply.
Contents: Solar mounting systems on flat roofs: basics & requirements | Advantages of east-west mounting | FLD flat roof system from Eurotec | Basis of solar mounting | Wind protection solutions on flat roofs | Overview of installation steps | Conclusion
In order for a solar system to reach its full potential, it is crucial to choose not only the right modules but also a suitable mounting system, including fasteners. The type and location of the roof surface determine how the modules are to be installed correctly.
Eurotec offers suitable mounting solutions for various (roof) applications:
Flat roofs in particular are widely used in commercial construction, residential complexes and public areas and offer great potential due to their flexibility in terms of installation. East-west mounting has proven to be particularly advantageous and efficient. It makes optimum use of the available space, reduces the load and ensures consistent power generation throughout the day. In addition, the systems on flat roofs can still be combined with green roofs.
Pitched roofs
Metal & lightweight roofs
Flat roofs
Mini power plants
East-west mounting offers numerous advantages over traditional south-facing mounting:
The load-bearing capacity of a flat roof should always be checked by experts (structural engineers, architects) before installing a photovoltaic system!
The FLD flat roof system from Eurotec was specially developed for the requirements of solar mounting on flat roofs. It combines stable mounting components with optional wind protection elements, thus ensuring a durable and economical solution. The FLD flat roof system is an efficient system that can be installed quickly and easily, reducing not only time but also labour costs. Robust mounting and ballast profiles form the basic structure and provide stable support for the solar modules. They form the supporting framework on which the modules are securely fixed, while at the same time ensuring even load distribution across the roof surface.
The system also includes the FLD front footv and FLD foot rear, which together form the support structure for the modules. Both are available in fixed tilt angles of 10° or 15°, enabling precise alignment of the modules. The rear foot provides stable support for the rear of the module, while the front foot supports the front. The modules are fixed in place using module clamps FASTFIX. The result is a well-designed system that not only saves time and labour costs, but also optimally meets the requirements of modern photovoltaic systems on flat roofs.
In addition to the mounting components, the FLD system includes wind protection solutions (FLD wind protection and FLD laterial wind protection), which are particularly indispensable in areas with high wind loads. They serve to divert wind forces in a targeted manner (either at the sides or at the rear) and relieve the load on the substructure. This prevents wind pressure from shifting the solar modules and putting strain on the entire mounting system.
With these optional components, we offer a fully coordinated system solution that is easy to install, durable and economical, and meets all the requirements of a modern flat roof system in every situation.
With just a few steps and the appropriate products for flat roofs, installation is quick and easy:
1. Preparation Roof inspection (à statics, roof covering, waterproofing), area calculation, load and ballast planning, material provision
2. Assemble the substructure Fastening the mounting profiles using fixing screws
String assembly – setting up the mounting profiles in an east-west direction, laying them out at the appropriate distance
Fastening the ballast profiles to the mounting profiles
3. Extending the substructure Set up for the fastening of additional modules
4. Ballasting Use of load distribution plates and placement of ballast stones
5. Module assembly Fastening with FASTFIX module clamps
The basic structure of the solar system can be expanded at any time as desired. To do so, simply follow the steps described above.
East-west mounting on flat roofs has established itself as the preferred solution. It combines high space efficiency with consistent energy production and reduced ballast requirements. With the FLD flat roof system, we offer a tried-and-tested mounting system that combines ease of installation, stability and cost-effectiveness, thus creating a future-proof basis for high-performance photovoltaic systems on flat roofs.
Discover Eurotec's entire range of solar mounting products. The catalogue contains all mounting systems for pitched, flat and trapezoidal roofs with technical details, installation examples and accessories – compact, informative and always up to date.
With Eurotec's Solar Planner, you can quickly and accurately calculate the optimal mounting solution for your solar system. This user-friendly tool determines the ideal number and type of fasteners based on your project data. This saves you time, prevents incorrect orders and ensures that your solar system is perfectly planned.
We’ll be happy to advise you on your construction project! Create a ticket now so we can help you quickly and efficiently — or use our free calculation software for your planning.
Here you’ll find more technical articles with comprehensive content you need to know on the construction site or for individual projects—whether you’re just getting started or already have years of experience.
Learn how Environmental Product Declarations (EPDs) at Eurotec create transparency about environmental impacts, enable sustainable construction, and provide planners with reliable data.
With TCC MAX, you can design cost-effective timber-concrete composite systems offering high load-bearing capacity and planning reliability. Use the ECS software for optimal results!
Learn everything about Eurotec's KonstruX full-thread screws: from load capacity and performance to certification and earthquake safety.
The Structus connector was specially developed for post-and-panel constructions in multi-storey mass-timber buildings. The product enables a force-fit connection of CLT panel supports and column splices across several storeys.
When are end grain connections permitted in outdoor areas? Learn more about risks, solutions, and alternatives for service class 3 in timber construction.
Learn what is important for professional fastening in wood construction – with information on screw-in torque, head bearing, and applications.
Deutsch 
English 
Español 
Italiano 
Français 
Polski