When building a cellar under the garage, it is necessary to ensure its ventilation and water resistance. When the place is dry, it is possible to perform walls from asbestos -cement -cement sheets of the roof slate, attaching them with screws to the wooden frame. To increase strength, two sheets of slate are used, which are glued together using cement-casein glue or bitumen mastic. The waterproofing of the cellar is made by coating in two times hot bitumen enclosing structures, which must be pre -primed.