Weather Resistance

More than any other building material, uPVC windows and doors made of KÖMMERLING profiles keep their excellent material properties even after many years in use. As a matter of fact, they do not alter under extreme temperature or weathering.

Thanks to the KÖMMERLING owned material compound of the uPVC profiles, they show no negative effects caused by heavy rain, snow, strong sun or smog. They also do not rot, corrode nor warp. And even after many years, the windows are still attractive, perfectly tight and working well.

Maximum Wind Resistance

Due to their excellent material properties, KÖMMERLING uPVC window and door systems are ideal for being installed in buildings close to the sea where they are permanently exposed to strong wind, heavy rain and salty air.

KÖMMERLING windows have passed several severe tests by official institutions. All window types are capable of withstanding the tests specified in European Standards EN 12207, EN 12208 and EN 12210 (Wind, water structural requirements of uPVC windows).

Termite Resistance

In tropical climates, wooden windows and doors are often destroyed by termites, whereas uPVC window and door systems are fully resistant to these insects. Thanks to the highly developed KÖMMERLING material compound of uPVC windows and doors, termites are not able to attack the uPVC profiles.

Efficient Thermal Insulation

No matter in which climate KÖMMERLING windows and doors are installed, they contribute to a cosy and comfortable atmosphere in your home. As the design of the KÖMMERLING system prevents thermal bridging, the thermal insulating performance of the finished window is exceptionally good.

The glazing is also of utmost importance for good thermal values, and contributes to a substantial energy saving. Window and door systems from KÖMMERLING eliminate the problem of water condensation on the window panes inside the house.

High Sound Insulation

Protection against noise is an essential characteristic of a modern window in order to ensure comfortable life both at home and in the office.

Sound insulation in the KÖMMERLING profile design is inherently good. It is further enhanced by fitting steel reinforcement and by choosing the appropriate glass. KÖMMERLING uPVC windows come up to the European Standard for sound insulation DIN EN ISO 1401/1-3 (highest sound insulation).

Maximum Water Tightness

KÖMMERLING uPVC window and door systems have been successfully used in coastal and tropical environments without any detriment to the surface finish or performance. One of the main assets of KÖMMERLING window and door systems is their resistance to driving rain and their joint tightness. KÖMMERLING uPVC profiles fulfil the demands of EN 12208 (Resistance to driving rain). All window types are designed to be watertight when tested up to 300 PA as specified in BS 6375: Performance of Windows Part 1, 1989 : Classification for weather tightness. Some types achieve a 600 PA rating.

Protection Against Burglary

KÖMMERLING window provides increased security with intelligent multi-point locking system.

High-stability window and door profiles made of uPVC offer the best solution for increased safety. Special fittings and glazing, qualified window fabrication and expert installation offer an enhanced security at various levels. For this reason, KÖMMERLING window frames and door panels are always internally beaded.

Behaviour in case of Fire

Fire tests have shown that KÖMMERLING uPVC materials, being naturally flame retardant throughout their product life, will not cause, support or enhance the development of accidental fire. Unlike timber windows, the uPVC sections do not support combustion and are in fact self-extinguishing. This quality prevents the promotion of fire spread. For this reason, KÖMMERLING window systems offer considerable fire protection. The special profile compound fulfils Class 1 fire resistance as defined in BS (British Standards) 476: Part 7. Therefore, KÖMMERLING profiles are an effective means for preventive fire protection.

Material & Structural Performance

The high performance compound used & developed exclusively by KÖMMERLING is KÖMALIT Z. The longevity & superior quality of this material has been conclusively proved for almost 50 years. This, KÖMMERLING’S own material compound, performs to worldwide standards for strength, durability, heat stability, colour retention & termite resistance. KÖMALIT Z, in fact, significantly exceeds the stringent requirements of the highest classification of DIN standard 77498 for impact resistance. This fact provides an additional margin of safety to the quality of the product & enables the profiles to be fitted even in high-rise buildings.

Environmental Advantages

The extrusion process of uPVC window & door profiles is relatively energy efficient, compared with other materials. Another benefit: wherever uPVC has been specified as an alternative to wood, the rate of cutting of forests has slowed down. uPVC profiles are environmental friendly as they can be fully recycled & reused for the production of uPVC profiles. For several years now, all KÖMMERLING window & door profiles have been solely produced with calcium-zinc instead of lead. Calcium-zinc is a new type of stabiliser that makes uPVC profiles even more resistant to the most aggressive weather conditions.

Long Life & Maintainance Free

Thanks to the modern technology, KÖMMERLING uPVC window & door profiles will practically last forever. For this reason, they are an excellent investment for your home as they do not involve any future maintenance costs. Combined with modern thermal insulation glass, uPVC profiles will help to achieve a sustainable energy saving effect. uPVC window & door systems do not require regular repainting & expensive maintenance. They do not rot, warp or corrode even in tropical & salty coastal climates. Therefore, their maintenance is reduced to simple cleaning & does not involve any further costs.