Abstract
This work presents retractable roofs of new designs based on class II mechanisms. Firstly, roofs that are currently in existence were analysed in terms of the mechanisms involved in their construction. Then, the possibility of constructing a roof based on the variety of quadruples in which all links are joined with roof panels was investigated. The boundary conditions that have to be fulfilled by such a construction were specified. Ultimately, research models were constructed with the use of construction solutions similar to those applied in buildings currently in existence.