Outlines and chips that appear on the steps are sealed with inserts from a suitable wood breed. The place of the defect is protected from dirt and fat, covered with a primer and the selected part is glued with a special glue for wood. The installation site of an additional element is polished and tinted to the color of the stairs. These problems are subject to independent repair, in the event of more significant malfunctions, it is better to contact a specialist or replace the stairs.