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What Causes Humidity? How It Affects Homes and Precautions

Answers to the question of what causes dampness and the effects of dampness on our homes... In this article, I have prepared detailed content on the causes of dampness, its effects and how to prevent it.

There are many reasons why dampness appears in our homes. These factors range from simple problems resulting only from wet weather to serious defects in the home structure.

Rainy, humid weather conditions are the main triggers of humidity. Especially in winter, the difference between the cold air outside and the warm air inside supports the formation of humidity. In other words, it occurs due to the temperature difference between two different environments. Technically, we call this situation “ condensation ”.

Ceiling moisture and dampness

The reaction of this condensation inside the house is primarily a wet appearance on the walls, mold and then cracks, and moisture formation on the surfaces inside the building.

Humidity and Humidity Formation

It occurs if the building does not get enough air (for example, there is no window in the kitchen), if you do not open the windows while cooking, if you do not ventilate the area where you put your laundry, or if it is a closed area.

The main reasons why dampness and humidity occur in the building, apart from the items I wrote above, are as follows:

  1. The effect of evaporation of hot water in bathroom and shower areas on wall surfaces.
  2. Do not open windows or doors in the kitchen due to steam condensation while cooking.
  3. The steam mixed into the air during the dishwashing, laundry and laundry drying processes creates moisture and humidity.

The items I mentioned above are due to user-related problems within the structure. Dampness not only fills your home with a bad smell , but can also cause stains to appear on the walls and deteriorate the overall appearance of the house.

How to Prevent it?

First of all, if it is a user-related occurrence that I mentioned above; You should avoid situations such as having your entire bathroom walls covered with ceramics, opening the windows while cooking, laying out laundry in completely enclosed areas, and ventilate your room.

The main reason for the formation of humidity is the temperature difference.

Humidity ; The moisture formed due to this air condensation causes swelling, mold and greening on the wall surfaces.

Technical Problems

I have shared with you a visual about moisture formation in ceiling areas above, and below is an example of moisture and mold formation on wall surfaces. Let’s look at the solutions to this situation one by one:

wall moisture formation

The reasons for moisture, dampness and mold formation on walls or ceilings as above;

  • The air outside is colder than the air inside
  • Water leaks (Plumbing problems)

Condensation occurs when the air outside is colder than the air inside . The air inside condenses and forms droplets that often appear on walls and/or windows. The amount of humidity in the room affects the likelihood of condensation forming; The higher the humidity in the room , the more likely condensation is to form. As a result, condensation often occurs in kitchens, bathrooms, rooms where people sleep, and rooms where laundry is dried.


Technically, in such cases, I share with you the issues you should prioritize as a priority;


  1. Ventilating your home regularly prevents moisture from accumulating.
  2. Increase fresh air circulation by opening windows every day.
  3. Don’t forget to ventilate, especially in humid areas such as bathrooms and kitchens.

Water Leaks

  1. Repair ceiling leaks and pipe problems immediately.
  2. Detect cracks in the walls and respond to water leaks immediately.
  3. Finding solutions to water leaks immediately prevents the formation of moisture.


  1. Check home insulation regularly.
  2. Update insulation materials as necessary.
  3. Good insulation prevents moisture formation by reducing temperature differences inside the house.

Technical Reasons

  • Leaky roofs: tiles may be loose or broken; The flashing may be damaged.
  • Overflowing gutters: They may be loose or clogged with leaves or debris.
  • Leaking downpipes.
  • Damaged or deteriorated exterior walls: There may be cracks or damage to jagged edges, cladding, plaster or pebbles.
  • Poorly fitting doors or windows.
  • There is a leak in the internal pipes.

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