Tradition of Quality since 1969.

Bertrand is a renowned manufacturer of windows, doors and curtain walls.The company was founded in 1969 and we have quenched the dreams of our numerous customers not only in Poland but in Europe and worldwide.


Our extensive range of products is characterised by an exceptional quality. We use manufacturing procedures based on modern technology and apply a wide range of materials: different types of wood, a variety of PVC and aluminium profile systems as well as combined materials, such as wood-aluminium or PVC-aluminium.
We provide a comprehensive service in every respect. Share your dreams with us and we’ll make them come true. Your dream project is somewhat extraordinary? Great! Taking on challenges is what we do.


Bertrand is part of the NFRC Product Certification Program. We are in the process of getting NFRC and AWS ratings for our chosen product lines from NCTL. In our commitment to quality, Bertrand is also part of the Keystone Fenestration Certification Program which ensures that our windows are manufactured to the highest of standards by means of strict quality control.


Let’s get together!


Because BERTRAND have been building up their brand since 1969. In that time we have quenched the dreams of our numerous customers in Poland, Europe and worldwide. Bertrand is a renowned manufacturer of windows, doors and curtain walls. We are very proud to have earned the respect of investors in a variety of sectors: residential, commercial, historical restoration, and even the most demanding field of passive and energy efficient architecture.

What is the highest quality of BERTRAND products a result of?

The highest quality of our products is achieved by the use of the most up-to-date technologies and continuous investments into R&D. Being one of the few manufacturers in Poland to have successfully introduced modern solutions into the market making us a pioneer of innovation and development within this sector. The quality, safety and comfort of our products are confirmed by numerous prestigious awards and certificates.

Why is BERTRAND’S offer so comprehensive?

So you don’t waste any of your precious time. You can choose from a wide range of materials: PVC systems, variety of timbers ranging from traditional pine to exotic species from around the world, aluminium systems as well as composite systems of PVC-aluminium and timber-aluminium. To complement our range of windows and doors you can choose from a vast spectrum of accessories e.g. roller- shutters, venetian blinds, insect screens, shutters, garage doors or even marquises or full glass constructions. We also offer numerous modern control systems e.g. radio, internet or biometrics.


Finally, introduced to american market by BERTRAND Window and Door Corporation.

…you will understand the difference.