The article presents issues related to the design of membrane canopy. The problem is how to change the shape of the existing roofing in order to reduce problems with its snow removal. Because the durability of the membrane made from polyester fibre coated PVC is lower than a steel roof support structure, the membrane material will have to be replaced. By changing some points of the membrane there is a possibility to modify the shape of the surface from which water flows and the snow slides. The main limitation of the concept is to maximise the use of the existing structure. The analysis of options allows for choosing a more optimal shape.