Grow your business with Bertrand. Become our business partner!


Bertrand have been a manufacturer of the highest quality windows and doors since 1969. Our products are known not only in Poland, but also in many countries around the world. We are valued because of the high quality of our products or innovative solutions, moreover because we invest a lot in new technologies, as well as certificates required in the markets.


We are distinguished not only by our wide range of products, but above all by the huge number of complex and completed projects for both individual and commercial needs.

Check out our projects HERE.


We specialize in individual projects as well as commercial. You can find Bertrand products in private homes, restaurants, galleries, company buildings, swimming pools, skyscrapers and so on.


Bertrand windows, as the only Polish joinery products, are recommended by the German police. Two months ago, our product was awarded at the prestigious builder’s show (IBS 2024) in Las Vegas. We are the first Polish company to receive this honor.

55 years of experience
Tradition, passion and quality since 1969
Wide range of products
Pvc, aluminum, wood, wood-aluminum, pvc-aluminum
Individual approach
We take an individual approach to the needs of each client
Lead time
Short lead times, object orders are not a challenge for us
Experienced staff
Every client is supported in the implementation of standard and complex projects by consultants with many years of experience
Unique solutions
Customized products available in many options, everything according to the client's needs
Premium product
Everything made with extreme care and accuracy, with the highest quality materials
Structural, hurricane and thermal certifications - adapted to the North American requirements
Starter package
Get a starter package of Bertrand products

Contact us and expand your business today!

+48 784 011 430; +48 694 458 428;

Bertrand Windows&Doors - The Unique You Choose