Bertrand Windows and Doors

PVC windows

PVC is a very good material for windows. PVC window profile systems have been developing for many years and are currently at a very high level, effectively competing with windows made of other materials. BERTRAND PVC windows are an aesthetic and functional product, very durable, resistant to weather conditions, effectively mute noise, heat-absorbing and energy-saving, safe for health, easy to use, care and maintain.

White window with aluminum handle

An advanced window system with excellent design.

A system with very good profile properties and at a reasonable price.


In the new system LINEAR the designers used an absolutely pioneering design concept for 74 mm deep systems, which resulted in the creation of a product characterized by visual perfection and optimal technical parameters. LINEAR is a fully complete system intended for the construction of windows, balcony doors and entrance doors.


KONTUR is a versatile, modern plastic system. Thanks to the transparent and clear design of the form, both from the outside and inside, the system creates new trends in the field of window design. Narrow profiles and the maximum share of glass provide more natural light in the rooms. Contrary to appearances, slim KONTUR profiles provide increased safety and stability!


Kombisystem plus is a new system with a middle seal. It is equipped with an anti-burglary fin placed on the window rebate, which mechanically protects window elements against external factors. Systems with a central seal are distinguished by excellent thermal insulation parameters.


The modern and technologically advanced KUBUS system presents a new look at window joinery. It fits perfectly into current architectural trends focusing on minimalist design, simple shapes and large glazing.


Thanks to the use of modern and narrowest profiles, more natural light will reach your home. The design of Quantix windows, following current architectural trends, will decorate your home. The rich colors of acrylcolor and veneers will allow you to match the windows to your individual style.



The BB LINE window series is a perfect combination of functionality and aesthetics at an affordable price. High thermal parameters, excellent design and a wide range of colors, all at a reasonable price. Do you care about time and availability? This model is perfect for you.

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