I was renovating an old house with my wife. At first, I hardly dared to start this project. The complexity was in details, but the technicians and Sokolka’s local partner gave me a lot of support. Windows and sliding doors have been in perfect harmony with the retrofitted external shutter systems. Every detail has been planned in advance and carefully implemented. There are many window systems and suppliers, perhaps even cheaper, but the cost savings due to precise preparation and planning were beneficial.

Stephan Lipp, Steyr, Austria