Bertrand Windows and Doors

PVC-Aluminum windows

Thanks to the use of modern PVC-ALU systems, we offer each customer the opportunity to create a completely individual window appearance, while maintaining the best thermal insulation values. Thanks to this, your home can now be truly safe, warm and quiet.

White window with aluminum handle

For special requirements – durable aluminum finish

The version of the Kontur system with the option of aluminum overlays is an extremely durable, elegant and effective solution. A specially designed wing profile with a reduced height, dedicated exclusively to attaching aluminum overlays, is a unique feature of this system, thanks to which truly unique designs are possible.

A modern system made of PVC and aluminum.

KOMBISYSTEM ALU BERTRAND are technologically advanced products with a depth of 83 mm.

Knowledge zone

Get to know us behind the scenes of our activities and stay up to date with the innovations we are preparing for you!


How to choose the right patio doors?

Summer is in full swing and that means more time spent outdoors, relaxing on the terrace or balcony. To these


Cortizo aluminum systems now available at Bertrand!

We are happy to announce that the latest aluminum systems from Cortizo have been added to our offer. These innovative sliding windows and doors


Does glass in windows matter? – Our guide to glass types

Choosing the right type of glass for windows is a key element affecting the comfort, safety and energy efficiency of the building. Additionally, the right selection