Cold roof is the cheapest option that is ideal for those who do not want to equip the attic. In this version, under the roof covering, only isolation from water and moisture is installed, which saves the attic room from moisture, which appears on the back of the metal tile due to temperature differences during the day. The insulation of the cottage occurs according to the attic overlap. In such a difficult business as the manufacture of reinforced concrete stairs, work should be started with the installation of formwork. It is also necessary to remember the methods of fastening of this formwork. Before pouring concrete into the formwork, you need to mount a frame from the reinforcement. During concreting, the flooded mixture must be compacted using a vibrator each layer. One of the important conditions presented to such stairs is the requirements of reliability and security. They can be achieved using a lining with a small rough tile. Before this stage, the staircase is needed from construction debris and other dirt.