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premium solutions.
to meet every demand.

For more than 50 years, we as a Luxembourg-based family run company have been manufacturing premium quality windows, doors and glass façades made of wood as well as wood and aluminium. Our philosophy: Quality, not quantity. Because windows are not a mass market product to us, but are instead products that are made to measure, individually planned and crafted to fulfil the wishes and expectations of our customers. It begins with selecting the highest quality materials and components.

Be it a renovation or new building: energy specifications have become decisive. Our various product lines are therfore able to meet all energy needs - be it for low energy houses, passive houses, or even above and beyond. We are not only optimally prositioned for fitting new buildings. When it comes to finding and eliminating weak spots in the energy efficiency of renovation projects or listed buildings, we provide made to measure, individual solutions.





custom-made wood or
wood-and-aluminium solutions.

Windows from OST are made individually in Luxembourg using the finest traditions of the trade to suit our customers' wishes. Exclusive woods such as larch, meranti and oak provide a pleasant indoor ambience. This in combination with an aluminium exterior provides the highest degree of weather resistance. With efficient insulation and high-quality safety technology, we meet the most diverse requirements.


Front doors

the front door.
a very personal entrance.

No other structural element connects individuals with architecture like the front door. To settle for standard options would not do justice to either. That is why every one of our front doors is individually crafted - making each door one of a kind.



more light.
more life.

Light ist life. And life is nature. Which makes it all the more understandable to want to make both a part of your home - with a generous glass façade that functionally unites natrue and architecture. It creates open spaces and - more important than ever today - transforms sunlight into heat during the colder seasons. That is reason enough to learn more about this kind op façade.



Thinking ahead.
with OST.

Not only do we aim to pleasure our customers with the final product - getting there is just as important to us. During the entire development stage, our team personally takes care of you - from making appointments, to fine-tuning a design, or practical matters such as measuring on site. OST's installation service ensures your completed windows and doors are installed properly and on time. And when the time comes for maintenance, our service team provides expert inspection and functional testing - as an additional guarantee to make sure you enjoy our products for years to come.



News by OST

exceptionally closed.

As part of the collective vacation we are exceptionally closed on Saturday, 8.08.2020.

From Monday, 10.08.2020 we will be there for you again as usual.

Many thanks for your understanding.