It all began over 50 years ago with Marcel Weber, the founder of OST Fenster in a small joinery in Grevenmacher. In 1985, Romain Hilger - the current director of OST - started work in the company as a manager, at the time with 12 colleagues. Approximately 3 years later, he and his wife purchased the joinery from Marcel Weber and founded OST Fenster S.àr.l.. After purchasing a plot of land in the then-new industrial park in Potaschberg, the process of building a new production hall with office buildings and a total floor space of 3000 m² was begu. At the beginning of 1991, 16 employees began their work in the completed building. From mid 1997, the company had its own sales department, which has been continually expanded since then in order to keep improving the level of customer service. In 1999, OST celebrated its first internet presence, in those days at the www.ost-fenster.lu domain. In 2002 and 2003, the company invested in modern plants and machinery, and production was switched to ONLINE control. OST became the first trade company and only the second company in Luxembourg to receive the official certificate for e-commerce in 2003. Two years later: our new showroom in the form of a large conservatory at our headquarters in Grevenmacher was opened. In July 2010, OST became the first foreign company to be included in the FLG. The FLG is a Window-Performance-Association (Fenster-Leistungs-Gesellschaft) which unites 19 of the most prestigious German window makers. In the same year, the neighbouring building was acquired for expansion purpose. In 2011 - after extensive rebuilding and furnishing - the service department, as well as the accounts and finance departments, moved into the new building, Manufacture II. In autumn 2011, our photovoltaic project was launched in which panels with a rated output of 250kW peak were installed on the roofs of the halls. In 2012, besides new software and new tools, OST also invested in a highly automated production line, the Working Process Logos Team - a high-precision and flexible machine. One year later, building work began on a connecting hall between "Manufacture I" and "Manufacture II". This connecting hall allows a better production flow, right up to the packaging and loading of the finished products. The next big investments in suface finishes for our products are already planned for 2017.
Continuous development and appropriate investments are essential for the further existence of the company and the safeguarding of jobs. This also incudes the handover of the company to the next generation of the family dynasty, a process which is already underway.