Wood floor ventilation device in a private house and apartment. The design, construction and operation of private wooden houses require special technical knowledge in many areas. Information about the rules, peculiarities of work performance, special requirements for the technical systems and structures of such a house will help to avoid mistakes in its construction, and when buying a ready-made house - to detect omissions and defects in design. A typical example that demonstrates the usefulness and necessity of knowledge in the field of construction is equipping a wooden house with a floor ventilation system.