The most important factor concerning wine rooms and wine cellars is sealing and proofing the area so as to maintain steady temperature and humidity conditions and to prevent the formation of dampness in adjoining areas. Sealing can be done using a number of methods: for example, building an additional wall made from waterproof materials while leaving an air pocket of 1cm between the wall and the existing wall, when every finish can be applied to the "wall" that is built such as gypsum or other.
Another method of sealing involves the application of polyurethane on an existing wall, covering with cement and plaster panels and applying the desired finish. In the event that there is a window in the area it may also be sealed so as to prevent the entry of light and air. The door too should be made from insulation materials.