
Both private home owners and occupants of high-rise buildings frequently worry about the issue of wet walls and corners. The room’s corner becomes wet, which causes the walls to darken, the wallpaper to come off, mold to grow, and the air to get heavy. In addition, there are several other factors that contribute to the cold season, such as lower room temperatures, less frequent window openings for ventilation, heavy precipitation, and a lack of sun exposure for the walls.
Damp walls and corners are a pretty serious issue that needs to be fixed right away. Wet interior environments can lead to a number of illnesses and serve as a haven for mites and fungi.
Thus, many people are concerned about why the corners of their homes get wet.
- Causes of dampness
- Eliminating dampness in corners
- The corners on the upper floors of the building are damp
- Preventing dampness
- Reducing humidity
- Some nuances of sealing joints
- The waterproofing of the foundation
- Condensate after installing new windows
- : how to get rid of dampness in a house or apartment
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Causes of dampness
The sources of moisture in a room’s corners may be visible or obscure. While some are obvious, others will need to be sought out. All of the causes of the house’s perpetually damp corners, however, can be broken down into two categories: internal (inadequate heating, inadequate ventilation) and external (increased wall thermal conductivity, outside water intrusion, etc.). P.).
Wet and darkened nook
Wetness frequently manifests itself in a room’s corners in the following situations:
- the wall is “leaking” (water can enter through cracks in the wall from the attic, drainpipes or eaves);
- the wall freezes (the corners are “crying” because a “cold” bridge has formed due to the increased thermal conductivity of the walls);
- heating in the room is insufficient;
- there is no ventilation or it is ineffective;
- fungus has formed on the walls;
- the foundation of the house is poorly waterproofed;
- there is a lot of washing and drying in the house;
- there are no hoods in the kitchen and bathroom;
- a void has formed in the seams that are not filled with mortar;
- external walls are too thin;
- voids have formed in the floor slabs;
- cooling occurs through metal beams or reinforced concrete structures;
- there is too much water and moisture in the basements;
- balcony slabs are poorly sealed into the wall;
- condensation appears on ventilation pipes due to improper vapor barrier.
Eliminating dampness in corners
Conscious owners will always detect wet areas early and identify the source of congestion.
Once the source of the issue has been located, you can start to remove it:
- If the wall freezes, you need to take measures to insulate it. The most effective way is to insulate the walls from the outside. It will not only reduce dampness, but also reduce heat loss. They do this with either mineral wool or polystyrene foam. However, for owners of apartments in high-rise buildings, such insulation is quite a troublesome task. If problems arise with external insulation, you can insulate the wall indoors.
Thermal calculations should be performed when installing insulation from the inside to prevent condensation from forming and the insulation material from becoming moist, which would destroy its insulating qualities.
- To make correct calculations, take into account the humidity in the room, climate, degree of thermal conductivity of the wall, etc.P., therefore, in such cases, expert advice is simply necessary.
- If the heating system is inefficient, additional sources of thermal energy should be used. This could be an electric fireplace, a stationary battery, a radiator or other alternative heaters, which are recommended to be installed in places where there is the most dampness.
- If condensation appears due to excessive tightness of the room after installing plastic windows, the room should be ventilated more often.
- If the walls are not thick enough, it is recommended, if possible, to line the outside of the building with an additional ball of brick or apply insulation under the plaster. You can insulate the walls from the inside with slab insulation (foam plastic, mineral wool) placed on a frame with 5 cm walls for filling expanded clay into it. This building material will absorb moisture from a damp wall and prevent the spread of mold.
- Ventilation can be improved by installing an additional hood, and at the bottom of the door at the entrance to a separate room you can make a gap for air regulation. Ventilation should also be improved in the bathroom and kitchen, which are most often sources of dampness.
- If there is a basement under the home, moisture can penetrate through microcracks in the floor, as a result of which the walls become damp. To eliminate this problem, the floor is treated with an antifungal agent, a moisture-resistant base is laid on it, and all cracks are sealed with sealant.
- If the cause of damp corners is fungus and mold that has appeared in the wall on the plaster, then all affected areas are treated with antifungal solutions, plastered again, if necessary, with a high-quality mixture, and only after that new wallpaper is glued.
- If balcony slabs are installed poorly, moisture penetrates into the seams, so the joints between the slab and the wall should be sealed so that there are no leaks leading to damp spots.
- When caulking seams in external walls, care should be taken to ensure that closed and open joints provide air protection, and that the latter are well protected from moisture.
The corners on the upper floors of the building are damp
The attic frequently causes the walls in private homes or on the upper stories to be damp.
This occurs in the subsequent scenarios:
- the corners turn gray due to violations in the insulation of the attic; dampness and black spots appear most of all in places where the attic floor adjoins the external walls;
- the attic space is poorly ventilated (few ventilation holes, no cross ventilation); with good ventilation in the attic, the same temperature is maintained over the entire surface of the roof in the autumn-winter season.
Wetness in upper floor corners
Preventing dampness
Adhering to specific guidelines can minimize moisture and avert its recurrence in the future.
- Laundry should be dried outside living rooms or with the hood turned on for air removal.
- When cooking, pots and pans should be covered with lids to prevent steam from escaping.
- In the bathroom, where there is the highest concentration of humidity, as well as in the kitchen, hoods and ventilation openings should be regularly cleaned from excessive clogging, and these rooms should also be ventilated daily.
- In a private house, you can insulate the attic and also cover the walls with a waterproofing material, preferably with pores.
- All flammable substances that form a lot of moisture, in particular paraffin, should be used extremely rarely indoors.
- All rooms in the house should be ventilated daily.
- Correct errors in the heating system in a timely manner.
- Use a dehumidifier to reduce humidity. This household appliance can easily cope with the problem of dampness, and its compactness allows you to move the dehumidifier from room to room.
Reducing humidity
If walls in high-moisture interior rooms (bathhouse, bathroom) frequently get wet, the ventilation system is probably the cause of the issue. As a result, you should start by looking for extraneous items that could obstruct airflow through the ventilation openings.
Checking the level of clogging in the ventilation channels is simple: place a burning candle close to the vent and observe how the flame behaves. If it reaches towards the grate, there is a draft and the channels are not clogged. You must install extra devices to create air circulation when there is no flame reaction to ventilation.
More slits for air intake can be made at the bottom of the door if the holes are not clogged but the draft is still weak. A forced exhaust is installed in the ventilation duct if this is ineffective. Since these fans can be extremely harmful to one’s health, they are only used when no one else is present.
Installing fans in the bathroom with integrated humidity controllers is advised by experts. The fan turns on automatically when the humidity rises, removing excessively damp air.
Some nuances of sealing joints
The corners of the room start to get wet if the seams aren’t tight and there are fissures visible in the walls. There is only one solution to this situation: microcracks in the walls must be fixed, as well as the waterproofing of the joints between the panels.
Moisture shouldn’t seep into the walls following excellent sealing. Only when the technology that seals the seams breaks can they become wet and leak.
The two biggest errors are using low-quality sealant or applying sealant without first making repairs.
It’s important to remember that the dampness issue won’t go away if joint waterproofing is only done in one apartment and not the entire house. Moisture will find its way into the desired room more slowly because it will seep through any poorly sealed seams in an apartment on the technical floor or on the floor above.
The waterproofing of the foundation
It happens that a poorly isolated foundation is the source of moisture in the house. When subterranean waters rise more than 1.5 meters, inadequate waterproofing allows the water to seep through the walls. In this instance, they will become wet, mold will grow in the corners and beneath the baseboard, the plaster will start to crumble, and the wallpaper will start to fade. Nonetheless, soil water infiltration can be stopped if the foundation’s horizontal waterproofing is done properly.
Why does the foundation get wet?
Condensate after installing new windows
It happens that after replacing regular windows with plastic ones, the apartment’s corners develop damp foci. The installed windows are extremely sealed; they firmly close the openings, which makes the room’s ventilation worse. In these situations, wall damping can be prevented if you know what to do.
Ventilation is frequently sufficient for the room’s air exchange. If this is insufficient, adding a second fan to the vent will help with ventilation. After that, the room’s humidity will drop and there won’t be any moisture condensation on the chilly walls, especially in the corners where there is less air exchange.
During the colder months, damp corners frequently become an issue. At first, many people don’t even notice damp walls, but when the moisture develops into mold, it’s time to address the issue. Owing to the room’s ongoing moisture, fungi, mites, and centipedes proliferate, which can lead to residents contracting different illnesses, breathing difficulties, coughing fits, and allergic reactions.
: how to get rid of dampness in a house or apartment
Removing moisture from nooks and crannies is essential to keeping a home comfortable and healthy. An unpleasant atmosphere, structural damage, and the growth of mold can result from persistent moisture. In order to address this problem, it is critical to pinpoint the underlying causes—such as inadequate insulation, leaks, or inadequate ventilation—and put workable solutions in place. These can include enhancing insulation to avoid condensation, sealing leaks, and improving airflow. Homeowners can safeguard their assets and make sure that their house is dry, secure, and welcoming by addressing moisture at its source.
The battle against too much moisture in a living area needs to start right away. This is a labor-intensive process that occasionally costs money. You can, however, permanently forget about wet corners if the underlying cause of the humidity increase is accurately identified and appropriate measures are taken to combat dampness. Additionally, if new renovations are needed, they will update the apartment’s walls and make everyone happy.









