Вікна Kommerling і Rehau: які краще вибрати?
What is better to choose – Rehau or Commerling windows? It is difficult to give an unambiguous answer to this question. Both companies produce products of decent German quality. When choosing designs, you need to start from the peculiarities of their application and financial capabilities.
Commerling and Rehau Profiles
Do not choose the most expensive models when there are no large loads on the structures in the future. The key criterion that is always paid attention to when choosing windows is their strength. The service life and the ability to resist the destructive influence of environmental factors depend on this.
Key parameters for comparing window structures
- quality of metal-plastic profile;
- number of air chambers;
- number of seals;
- features of reinforcing elements;
- depth of window blocks;
- thickness of double-glazed windows.
Let’s look at these window characteristics in more detail.

Thickness of products
Well-known German manufacturers produce windows of sufficient thickness, which provide excellent sealed and soundproofing properties. Rehau’s designs have an advantage in terms of thickness, but it is insignificant.
The thickness of the Commerling windows is 2.8 millimeters, and the thickness of the Rehau structures is 3 mm. From these data, we can conclude that a small difference in the profile thickness data does not have a significant impact on the performance properties of the products.
Number of air chambers
High tightness of windows contributes to better heat retention and improvement of thermal insulation properties. Trademarks Rehau and Kommerling produce structures with a different number of air chambers, ranging from three.
Commerling and Rehau manufacture windows with excellent leakproofness. The middle price segment is models with 4 air chambers, and the upper one is modifications with 5-6 chambers.
Number of seals
In the work of plastic windows, a prominent place is occupied by seals, which help to improve the tightness of structures, as well as strengthen the functions of sound insulation and heat saving. Usually plastic windows of European quality have 2-3 seal elements. Budget models are equipped with a double sealing circuit, and more expensive ones – triple.
The higher the quality of the seals, the better the protection against the negative effects of moisture demonstrate the products. High-quality sealing elements help to maintain a constant temperature in the premises.
Commerling and Rehau windows are equipped with high-quality rubber, which is characterized by high strength and long service life. The use of rubber of impeccable German quality adds practicality to the designs.
Sealants and Commerling are characterized by approximately equal indicators in terms of service life. The effectiveness of the seal depends on the properties of the rubber. In this direction, Rehau windows are leading, but Kommerling designs are not much inferior to them.
Reinforcing elements
In the manufacture of window structures, Kommerling and Rehau use metal liners to strengthen the plastic profile. They are usually made of aluminum alloy. They are installed in the inner part of the central, the most dimensional, chamber.
Rehau windows are produced with several types of reinforcement – in the form of the letter G, a tube having the shape of a rectangle, etc. Plastic reinforcing profile Kommerling has reinforcement with a special metal strip in the form of the letter P.
Rehau and Kommerling windows are equipped with high-quality reinforcing elements. When installing windows, it is important to consider what loads the structure can withstand.
Depth of window units
Among the rich assortment of window structures of the Brands Kommerling and Rehau are models with different depth indicators of window blocks. They vary from 6 to 13 cm. For apartments of high-rise buildings, offices and cottages, the optimal depth is about 7 cm.
When comparing windows, it is always worth paying attention to their durability. The service life of windows depends on the characteristics of their use. With proper care of the structures, the terms of their operation are extended. The average service life of high-quality plastic windows is 50-65 years.
One of the indicators that you definitely need to pay attention to when buying windows is the price. Let’s see which windows are more expensive – Commerling or Rehau. One of the most expensive models of Rehau is Geneo, in the manufacture of which new technologies are used. Rehau windows are more expensive, but Commerling windows demonstrate excellent performance in a more affordable price category.
See also: Comparing WDS and Steko windows is useful information when choosing windows.

Customer reviews about Commerling and Rehau windows
Reviews of Rehau and Commerling windows are positive. Buyers note the decent quality of laminated profiles, high efficiency of heat preservation and excellent sound insulation properties of products.
Sometimes there are negative reviews about the use of window structures of these brands, but most often they are associated with improper assembly, unprofessional installation or the use of low-quality fittings.
When choosing windows, it is important to focus on the climatic conditions and features of the premises. It is impossible to say unequivocally which of the German brands is better – Rehau or Commerling. Each has its advantages. It’s important to choose a design that takes into account the operating conditions and affordability.
Our advice is to always choose what suits you best!