Flat roof systems

Structures for Photovoltaic Panels on Flat Roofs

Photovoltaics on flat roofs are an increasingly popular choice in both residential and commercial construction. Thanks to modern mounting solutions, even a flat roof can become an excellent place for a PV installation. At Enzeit, we offer solid and proven systems that ensure stability, safety, and optimal panel tilt, regardless of the building type and prevailing weather conditions.

What are flat roof structures?

A flat roof structure is a specially designed mounting system that allows for the installation of solar panels on horizontal or nearly horizontal roof surfaces. Unlike solutions for pitched roofs, the key factor here is the correct tilt angle of the panels, which enables effective solar energy capture. These are usually lightweight yet durable structures made of aluminum or galvanized steel, often with ballast (e.g., concrete blocks) to secure the entire system against displacement caused by strong winds.

Flat roof structures – when to use them?

Photovoltaics on flat roofs are ideal for buildings with large, unused roof space – warehouses, production halls, service buildings, or modern single-family homes.

A flat roof structure (for photovoltaics) makes sense when:

• the roof has sufficient load-bearing capacity to support the weight of the panels and ballast,
• there are not too many obstacles that could cause shading (air conditioning units, skylights, chimneys),
• you want easy future access to the installation – for example, for maintenance purposes.

Flat roof photovoltaics are also a great option if you want to avoid interfering with the existing roof covering – many structures can be installed without drilling. If you want to be sure whether your building’s roof is suitable for photovoltaic panels, consult our specialists, who will evaluate the project and select the appropriate solutions!

Flat roof PV structure – technical requirements

Although the structure for photovoltaic panels on a flat roof may seem like a simple solution, it must meet a number of technical requirements. First and foremost, the roof should have adequate load capacity – the structure with panels and ballast can weigh several hundred kilograms.

It’s also important to maintain proper spacing between panels to avoid mutual shading. Installation must also account for roof water drainage so that the structure does not interfere with system performance. It’s worth noting that when designing the PV panel mounting method, one must also consider the common weather conditions in the given region – especially strong winds or heavy snowfall in winter.

At Enzeit, we use only proven solutions that comply with current standards, adapting the system to the specific building. Our specialists carefully assess the roof’s load-bearing capacity and PV installation conditions to propose the best options.

Mounting frame for photovoltaic panels on flat roofs – installation and maintenance

Installing a frame on a flat roof is relatively quick and minimally invasive. Most often, it does not require penetrating the roof or heavily interfering with its structure. Ballast systems rely on evenly distributed weight, which helps maintain roof tightness. Photovoltaic panels are mounted on profiles set at the proper angle – usually between 10 and 15 degrees, which ensures efficient solar energy absorption.

A well-designed system not only facilitates installation but also minimizes the need for future maintenance. In practice, this comes down to periodic inspections of the fastenings and checking whether the structure has been damaged by strong winds. Thanks to the use of corrosion- and UV-resistant materials, these frames are practically maintenance-free.

Structure for photovoltaic panels on flat roofs – price and benefits

The cost of a flat roof PV mounting structure depends on several factors: the type of material (aluminum or steel), the mounting method (ballasted or anchored), the number of panels, and the specifics of the roof.

The main benefits of a professional flat roof structure include:

• stability even in harsh weather conditions,
• no interference with the roof covering (for ballast systems),
• easy future expansion of the installation,
• aesthetics and organization on the roof,
• maximum energy efficiency thanks to optimal panel positioning.

A photovoltaic structure for flat roofs is a solution that combines technology with functionality – ideal for those who want to maximize the potential of their roof without unnecessary complications. With Enzeit’s proven systems, you can be sure that your installation will be safe, efficient, and ready for years of reliable operation!