basement ventilation system in a private home - air holes and ducts

Normal use of the basement is not possible, if the air is stale in it, and the walls covered with condensation and mold.These symptoms are caused by a lack of ventilation in the basement and can cause not only damage to vegetables and supplies, but also lead to premature wear of foundation and structural elements of the building.

Particular attention should be paid to the construction of ventilation if the water table is shallow (how to check this, read here), as well as if an underground room is planned actively used for storage or as a workshop, boiler room, etc.Ideally, basement ventilation system is calculated and laid at the stage of designing the house, but if this important detail has not been taken into account, you can rectify the situation.

Vents

For a small basement, which is not used for commercial purposes, will need two ventilation holes in the opposite walls.For them, even when pouring the foundation laid across concrete pipe tape.If this was not done, we can accurately drill holes embedded edge grout and closing bars of rats and mice - they are called the air holes.On the outer side of a pipe can be installed dampers to close them during the cold season.

ventilation

cellar ventilation pipes should have a diameter of 10-15 cm longer than the pipe diameter, the higher the air velocity, but the higher the heat loss.The total length of the pipes will be the height of the house, plus 2-3 meters, it is better to use simple and easy to install plastic pipes.In addition, you will need 2 baffle and pipe clamps and foam to lock the pipe in the ceiling or wall of the basement and the punch, if ventilation will be installed in an already built house.

Chimney originates from the basement ceiling and access to the roof.The outer part of the pipe, and it should rise by 30-50 cm above the ridge, insulated and close the deflector.At the inner end of the pipe is set for the collection of condensate.

Ventilation tube starts at 30-50 cm above the basement floor at the opposite end of the room and out, rising to 1-1.5 m above the ground.Its outer end should be closed grille and protected from moisture.It is recommended to set supply air system on the shady, north side of the house.If the basement has a window or door leaks, the inflow pipe can not be installed, and open them more often.

natural supply and exhaust ventilation depends on the temperature and strength of the wind, so to ensure a stable traction can be equipped with a small chimney fan running out.

Council. Check how well copes with ventilation air exchange, it is possible simply by burning match.The rapid extinction of her - a sign that in the air a lot of carbon dioxide.Properly functioning ventilation should completely renew the air in the basement for an hour.