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Condensation in the house, what to do


Condensation in the house, what to do: practical advice and actions to be taken to solve the problem of humidity, mold and condensation in the home.

How condensation forms in the house

Therecondensation in the houseis formed acauseof a sudden change in temperature that favors the change of state of the water it givesvaporit turns intoliquid. Condensation occurs in the form of droplets that can be seen on the surfaces of mirrors, windows, bricks, walls and ceilings. Thecauses of condensation in the housethere are many precisely because the water vapor that turns into liquid has different sources, such as:

  • the normal humidity of the room;
  • the breathing of people in the house;
  • from cooking activities, especially those that involve the use of boiling water and other cooking liquids;
  • condensation caused by moisture saturation, a very common phenomenon in the bathroom, in case of a hot shower.

As is clear, the sources of water vapor which transforms into condensate are very common. Foravoid condensation in the houseon the one hand it is necessary to limit the amount of humidity present in the home environment and on the other hand it will be necessarycurethe causes that lead to sudden changes in temperature. The change in temperature is favored by several elements including:

  • poor insulation of the perimeter walls or the roof;
  • drafts of doors and windows;
  • presence of thermal bridges;
  • poor ventilation, absence of air changes;
  • use ofvarnishes, paints, coatings or insulationnon-breathable, that is, which do not allow the dispersion of a portion of moisture normally contained in the walls towards the outside.

Consequences of condensation in the house

Therecondensation in the housecan set off a number of problems. One of the most common symptoms of thecondensation is the appearance ofmold stains on the wallswhich have a blackish-green color

L'moisture from condensationit can also damage the furniture, at greater risk are the furniture and wooden objects, even the beams and joists. Therecondensation, in the long run, it can disintegrate and pulverize the internal plaster of the walls.

The appearance of molds is the first obvious symptom ofcondensation in the house. Generally, molds form on the walls most affected by condensation humidity. This is why the position of the molds can give a clear map of the thermal bridges of the house.

Condensation in the house, all remedies

For all remedies, please read the ad hoc page "Condensation in the house - Remedies “.In general, it can solve the problem ofcondensation in the housefighting humidity. To combat humidity in the house, behavioral rules can be followed, such as:

  • avoid drying laundry at home;
  • ensure good ventilation of the rooms with multiple air changes on a daily basis;
  • activate the aspiration of the kappa to better manage the fumes of cooking food;
  • avoid growing plants indoors;
  • open the bathroom window after taking a shower;
  • use a DIY dehumidifier.

Good behavioral rules, unfortunately, are not enough to avoid the formation ofcondensation. To eliminate the onset of mold and solve the problem of humidity in the home, building interventions would be necessary to both restore the damage caused by condensation and prevent its formation.

Among the interventions recommended to definitively solve the problem of condensation in the home, we point out:

  • restore the walls affected by condensation and mold using a dehumidifying plaster for walls and a transpiring paint enriched with specific anti-mold additives;
  • eliminate any drafts from doors, windows, electrical sockets, chimneys ... For all information:how to eliminate drafts of doors and windows;
  • install a forced ventilation system or purchase a dehumidifier;
  • eliminate thermal bridges;
  • improve the thermal efficiency of the building by potentially insulating the entire house;
  • replacement of obsolete fixtures such as single glass windows or inefficient wooden doors;
  • use of vapor barriers, these are thin membranes to be placed generally on the hot part of the thermal insulation layer;
  • perform a thermography of the home to identify the points where it is most necessary to act.


Video: How to Avoid Damp in your Home (November 2021).