Experience the unique terrace roof world with an open top feeling:
We, the Joka-System GmbH, are the European market leader in the production of glass sliding roofs.
Jochim Kalbfleisch, the director of the company, developed the state-of-the-art sliding roof system “Vitello-Flex” in 2009. From that time on, we constantly respond to technological advances. Meanwhile we are not only able to call the well-tried “Vitello-Flex” proudly our own, but also his innovative successors. Currently, we are cooperating European-wide with our “Vitello-Flex” dealers.
Our glass roofs are characterized by an optimum combination of high-quality, functionality and elegant design: All constructions are certified according to DIN EN 1090 and are produced in our own factory in Delmenhorst, Germany.
An assembly belt production is completely eliminated: Each roof is manufactured individually to measure according to your requirements.
We offer you an almost unlimited flexibility and liberty in the design of your dream roof.
Glass sliding roof:
Experience an open top feeling with our unique Vitello-Flex glass sliding roof and its innovative technology. We are not only talking about the ideal solution for you terrace, but also for your balcony or penthouse.
Motor-driven glass sliding roof:
Thanks to high-quality technology, our Vitello-Flex-Plus glass sliding roof offers you the possibility to react to all weather conditions via push button.
The GG100 Slide frameless sliding glazing with an impressively simple handling provides safety and transparency at the highest stage.