New plastic windows sweat from the inside in the apartment. Fogging of plastic windows: causes and their elimination (tips)

The question of why plastic windows sweat is asked by those who have encountered this problem. There are several reasons:

• depressurization of the glass unit;
• high humidity in the apartment;
• the temperature regime is violated;
• poor sealing around the perimeter of the profile;
• temperature difference;
• slopes are not insulated;
• An inappropriate glass unit has been installed.

By finding out exactly where fogging occurs, you can more accurately determine which factor leads to this. Condensation may form on inner surface windows in the apartment, outside and inside the windows - between the glasses, as well as on the slopes and frame. Having established the reason why the windows “cry”, it will be easy to figure out what to do to get rid of it.

Why do outside windows fog up?

Foggy plastic windows outside the house are the result of temperature changes with the formation of condensation. This is normal physical process, not dangerous to either the walls or the house. Of course, a prerequisite is installed ebb sills - external window sills along which water flows to the ground and not into the wall. If they are, you don't need to do anything else.

Condensation on external windows is evidence that the double-glazed windows are selected correctly and fully cope with the energy-saving function, and the dew point is shifted outward. The heat remains in the apartment, as evidenced by the cold exterior glass. The contact of air and cold glass causes fogging.

Reasons for glass fogging from the inside

The main root cause of the formation of condensation, “tears” on the window glass from the inside, is increased humidity in the apartment. Wooden windows provided natural ventilation, excess moisture was removed along with the air from the house. Plastic windows also have a micro-ventilation mode that removes excess moisture, but most often they do not use it for fear of losing degrees of heat. In this case, you can purchase a dehumidifier or install a forced ventilation system.

An air recuperator copes well with the task of ventilation without heat loss. It provides supply and exhaust ventilation in the required volume, and at the same time already heated air is supplied to the room.

Another factor in glass fogging is temperature changes. If the windows “cry” only in cold weather, it means that the temperature difference in the apartment and outside is to blame, and no dehumidifiers will help here. When condensation collects only on the coldest days, several times a year, you can ignore this and do nothing, since there will be no harm from it. If the windows fog up at the first cold snap, we can say that the windows were chosen incorrectly.

Incorrectly selected windows are most often the result of inappropriate savings and installation of single-chamber packages without taking into account the climate. This leads to a shift of the dew point into the room and the formation of condensation on the glass. Because of this, fungus and mold may appear in the apartment. If such a problem occurs, it is not necessary to replace the windows; you can only replace the double-glazed window with a two- or three-chamber one.

In a private home, there may be another reason why plastic windows sweat. This is improper indoor air circulation. Air circulation is ensured by a ventilation device, correct placement heating appliances in the house and their operating mode (with natural ventilation). For example, when stove heating There is a circulation problem in terms of mixing cold/warm air throughout the entire area of ​​the house. Therefore, such houses suffer greatly from high humidity and condensation on the windows.

Why does condensation collect between the glass panes?

The double-glazed window is a hermetically sealed structure. Between the glasses there can be ordinary air (models in the budget price category) or gas - krypton, argon. Some manufacturers produce vacuum double-glazed windows; there is no gaseous substance between the glasses. Regardless of the type of filling, while maintaining the main condition - sealing - the formation of condensation inside the window is impossible.

If the windows still “cry” from the inside, this indicates a low-quality product or improper installation. In this case, the seller must, at his own expense, replace the double-glazed window with a sealed one. Fogging inside, between the panes, is not just harmless moisture, it is evidence that the window will not fully perform the functions of noise and heat insulation.

When purchasing metal plastic windows Pay attention to what warranty cases are specified in the contract. If the aspect of the tightness of the glass unit is not reflected in the contract, then in the event of condensation inside the window, the buyer will have to make a replacement at his own expense.

If the windows “cry” and most of moisture collects indoors on the window frame and slopes, this may be evidence of several problems:

• windows are poorly adjusted for pressure;
• the slopes are not insulated;
• There are gaps left around the perimeter of the window profile.

Uninsulated slopes shift the dew point. As a result, condensation forms inside the house when warm air comes into contact with a cold slope. This problem can only be eliminated by insulation. Sandwich panels or drywall with insulation (mineral wool, expanded polystyrene) are suitable for this. This finishing of slopes will help get rid of moisture and mold.

When the window sash is not adjusted to the pressure and does not fit well against the other sash, cold air penetrates into the resulting gap, cooling the frame. This is one of the answers to the question - why do plastic windows in an apartment sweat in winter? In this case, most of the moisture collects in the lower part of the window and on the windowsill. This reason can also be determined by the air flow when the window is closed: along the perimeter or on one side of the sash “siphonite”.
Adjustment will help fix this problem. You can do it yourself using the following algorithm.

1. Find the adjusting eccentrics (trunnions). They are installed on the side, in the same place where the handle is located, at the bottom.
2. Use a hexagon or pliers to turn the trunnions, achieving the greatest degree of compression.
3. If after this there is a gap on the side of the hinges, it must be removed by turning the adjusting screw on the lower hinge.

Blowing through the seams between the window profile and the wall is an installation defect. It should be fixed by the company that installed the window. When purchasing double-glazed windows yourself, it is not difficult to eliminate the defect, but problems with this in new buildings have to be solved differently. To do this, you do not need to remove the window; the joints can be sealed using polyurethane or acrylic frost-resistant sealant.

What should be done to remove condensation?

Some recommendations on how to get rid of window fogging are given in the previous sections. Here I would like to tell you how to eliminate the appearance of “tears” in an apartment due to high humidity. High humidity is the main reason why windows cry a lot; by eliminating it, you can most often forget about the problem forever.

To do this, you can use the following methods:

• regular ventilation;
• installation of window profiles with special valves;
• air dehumidification;
• installation or repair of exhaust ventilation.

Since plastic windows are sealed, and moisture is a waste product, it is necessary to organize ventilation. Every day you need to ventilate each room 2-3 times for 5 minutes or set the window to micro-ventilation mode. It should remain in this position around the clock. A fairly simple method - manual ventilation or micro-ventilation - will be effective for living rooms. However, for the kitchen, bathroom and rooms with many plants, this is not enough.

In those rooms where steam generation is increased, it is necessary to install exhaust ventilation. The kitchen and bathroom already have ventilation ducts, but installing electric hoods will significantly increase air purification, including steam. You can install a fan with a humidity sensor in the ventilation shaft. It will turn on only when necessary. Which method of getting rid of high humidity will be the most effective depends on the specific conditions in the room. The owner of the house always decides what equipment will be installed and will help keep the air clean and the windows dry.

Plastic windows are becoming more popular year after year due to their numerous positive qualities. They insulate apartment rooms from street noise, retain heat well, do not require complex maintenance measures, have a presentable appearance and, in modern times, an affordable price.

However, like all elements of home improvement, it also has its drawbacks, which include the appearance of moisture on the glass during temperature changes. Why do plastic windows fog up inside and can this be avoided? This question worries many homeowners in which double-glazed windows are installed, since such manifestations lead to the appearance of mold around the frame, and they can subsequently spread to the rest of the wall decoration.

Consequences of excessive dampness - mold spots on slopes and walls

As is known, heated air in a room rises up Therefore, most often dampness and then fungus occur in the upper corners of the frame. This happens due to the temperature difference between warm air coming from the apartment and cold air coming from the street. The most pronounced difference between them is created in the upper part of the frame. When they “collide”, condensation occurs, but only in the case when there are no elements that contribute to the constant weathering of moisture. This manifestation can be characterized as the formation of a “dew point”, that is, a temperature is created at which the moisture in the air turns into condensation, which flows down the glass from above. By the way, it can also actively form in the lower part of the window.

There are a number of other reasons that contribute to the formation of condensation at the “dew point”:

• Sudden changes in atmospheric pressure, usually accompanied by equally sudden changes in weather. It is clear that a person cannot influence this.
• Increased dampness in the room, for example coming from basements, especially in apartments located on the first multi-storey floors buildings.
• Excess humidity resulting from cooking or long-term steam supply - this mainly concerns kitchens and bathrooms in private homes, where small PVC windows are often installed.
• High temperature in the rooms of the house, but very low outside the window. In such cases, it may even appear on the window glass. icing - freezing condensation at the bottom of the window.

• The tightness of a double-glazed window is considered its indisputable advantage, but it also makes it impossible for the materials to “breathe,” which is also the cause of glass fogging.
• A large number of indoor flowers can also cause condensation on the windows. Plants require periodic watering, which produces a certain amount of moist evaporation, and they, having no outlet due to the tightness of the structure, settle on the glass windows. In addition, if flowers are placed on the windowsill in a dense row, they block the flow of warm air from the radiators to the frame and glass of the window, which also causes temperature changes and leads to the formation of condensation.

• The presence of condensation on window frames can also be caused by the fact that the window sill is too wide and blocks the flow of warm air from the radiator to the window, directing it towards the room. According to the rules, heated air should be directed upward along the window, creating thermal curtain, preventing the cold coming from the window from entering the room, and at the same time actively ventilating the surface of the window.

• Household reasons, such as carrying out repair work using solutions and glue, as well as drying clothes in an apartment in winter, are also reasons for the formation of moisture droplets on plastic windows.
• It is impossible not to mention the mistakes that may have been made during the work during the installation of the frames. They are very often the cause of condensation. To the most widespread Installation defects include:

- glass blocks manufactured with deviations from production technology, which do not correspond to the declared quality and characteristics, and therefore are unable to protect the house from cold, draft and noise;

PVC window ventilation

In order to ensure proper ventilation of plastic windows, their manufacturers have introduced several devices that should not be ignored when choosing a model.

• “Comb” installed on the frame, which will allow you to open the sash to the desired distance .

Clamp - “comb” for setting the required window clearance when ventilating

• An ordinary window provided by the window design.

• A sash capable of opening in two positions - fully and for ventilation, with an opening opening of 10 ÷ 15 cm.
• A comparative novelty in window design is slot ventilation, when the window sash moves away from the frame by literally a few millimeters.

• Ventilation valve capable of regulating the flow of air into the room.

• Self-regulating ventilation, which exchanges air as needed using channels in the profile chambers or special climate valves. The valve is a plastic box in which a special movable plastic feather is installed. It controls the incoming air, reacting to the intensity of the air flow. Thus, when the wind intensifies outside, the feather closes itself, and in its absence the valve is open, so there are no drafts in the room.

The climate valve is installed in the upper part of the frame. If the window area is large enough, then a kit consisting of two valves is installed.

High-quality ventilation will solve most problems associated with the formation of condensation on windows.

Ventilation Valve Installation

The ventilation valve in a PVC window is quite easy to install, and the whole process will not take much time. The kit with the valve includes everything necessary for its installation. Tools you will need construction knife and a screwdriver with a Phillips head.

This element is mounted on the top panel of a balcony door or any opening window sash. The main thing is to choose right size valve

• First, open the flap and apply the valve to the planned installation location in order to mark the length rubber seal, which needs to be deleted. Later, its place will be taken by the seal that comes with the valve.
• Next, the seal is carefully cut out. At the places where it is cut, next to the remaining seal and in the middle of the resulting gap in the groove where the elastic was previously installed, special devices are attached - plugs with holes for self-tapping screws. Through them the valve will be screwed into the sash.
• Then the valve is installed on the sash. It has a layer of double-sided tape on the bottom plane. It is necessary to remove the protective film and glue the body to the upper end of the sash in the right place. Then self-tapping screws are inserted into the eyes with holes and screwed into the previously installed plugs. This ensures a reliable connection between the valve and the window sash.
• The kit necessarily includes two pieces of sealant, which are inserted into the grooves of the valve between the screws that are screwed in.
• Having finished with the sash, you can move on to working with the frame seal. It also marks the length of the elastic that needs to be cut. This part to be removed must be located exactly opposite the valve installed on the leaf.
• Instead of the removed seal, a new one from the kit is installed.

This completes the work. You just have to close the flap and move the valve regulator in the desired direction, to the closed or open position.

Video - Self-installation of a simple ventilation valve

This work can be carried out by any owner or even the owner of the apartment, since it is nothing complicated and heavy in this process no.

Prices for window supply valves

Window inlet valve

Installation problem

If, after installing the valve and regular ventilation, condensation continues to collect, and mold does not come off the walls, the reason should be sought in the general correctness or in the quality of the product itself.

It is quite possible that the window was installed by “wretched craftsmen” who made a lot of mistakes

To identify the cause in this case, it is necessary to invite a specialist who will inspect the double-glazed window and the quality of its installation. After the inspection, the technician will be able to give a qualified opinion on whether the current situation can be corrected by eliminating the flaws of incorrect installation, or whether a new one will have to be done.

It will not be difficult to get rid of condensation on the window if the problem is insufficient ventilation of the room. You need to carry out a number of simple and affordable measures, and you can forget about unpleasant puddles on the windowsill or ice on the glass.

It will be more difficult to solve problems if the manufacturer and installer of the double-glazed windows was found to be unscrupulous and carried out the installation process poorly. In this case, sometimes only radical measures will help cope with the occurrence of condensation.

Video: how to install an automatic supply ventilation valve

If a few years ago only fairly wealthy people could afford high-quality double-glazed windows, today they can be seen literally at every step. Their advantages are obvious: stylish appearance and excellent thermal insulation. However, plastic windows also have one significant drawback - they fog up. However, this problem can be dealt with quite simply. So, why do plastic windows in the house sweat and what to do about it?

Causes of condensation

Many owners of plastic windows believe that their fogging is a completely natural and normal process. Meanwhile, if a phenomenon is observed every year, its cause should be found and eliminated. There is no point in blaming the manufacturer and installer here. No one is immune from errors, but they account for about 4% of the total number of problems (and if there were no noticeable defects on the windows when purchasing, then the percentage tends to zero). In all other cases, the answer lies in improper use of windows.

The most common cause of condensation on glass is improper use of windows.

As an example, the following cases can be distinguished:

• In an attempt to save money, more affordable single-chamber double-glazed windows were purchased.
• The battery located under the window is blocked, which impedes air circulation. The solution to the problem is simple - reduce the width of the window sill.
• Poor ventilation, which is why wet air doesn't come out. Most often, simply cleaning the air duct is enough.
• Flowers and all kinds of plants on the windowsill, humidifying the air.
• Installation errors.

First, let's look at why the windows in the house sweat if plastic double glazed windows high quality and installed according to all rules.

Most often, glass in plastic windows fogs up in winter. At the same time, the design individual models implies a special winter ventilation system, but unfortunately, not everyone knows about this. As a result, the windows are not switched to the required mode with the onset of cold weather, and this reduces the air supply and guarantees the formation of condensation.

It is best to install windows with a special ventilation system

You should not think that the reason for fogging lies in savings: even the most expensive and high-quality double-glazed window can start to “cry”. The windows are sealed, so they don't let in cold air from outside. This is both good (heat leaves the room more slowly) and not so good: if proper ventilation is not provided, there is no doubt that the windows will fog up. At the same time, the atmosphere in the room is not the healthiest, which means that the plants and people in it may begin to get sick.

Foggy windows in wooden houses

Plastic windows also sweat in a wooden house. Here, the most common cause is poor-quality ventilation; in some cases it is not even included in the building design. The logic of such things is simple: builders hope for sufficient air exchange thanks to walls made of breathable material. In practice, this leads to humidity of up to 70% in the premises, due to which excess moisture settles on the windows. Troubleshooting is simple - the simplest electrical ventilation will correct the situation.

Properly designed supply and exhaust ventilation ensures optimal air circulation in the house

Fogging of windows from the inside

A window can fog up not only from the outside, but also from the inside, which is a much more serious problem. It is impossible to wipe away such moisture, and when it freezes it turns into ice, threatening to break the glass. Why do plastic windows in the house sweat from the inside? Most often the reason is a banal defect, and the situation can only be corrected by replacing the double-glazed window.

If the window freezes from the inside, a complete replacement of the double-glazed window will be required.

This trouble must be dealt with, since the consequences can be not only unpredictable, but also very unpleasant. Take, for example, the frost on the windows, which will add humidity and cold to the microclimate. In the spring, all the moisture will begin to be actively absorbed into the walls, destroying them.

Anti-fog

First of all, you should establish what exactly is causing the problem. The easiest way with ventilation is just to bring it to ventilation hole lighter or candle and see if the flame deviates. If it does not move, then cleaning is necessary. In most cases, it is enough to remove the barrier grille and thoroughly wash it to remove accumulated dust and grease. If a blockage has formed inside the channel itself, it is necessary to clean it. In the most difficult cases, the matter cannot be solved without calling the service company.

If the problem lies in the window sill, then trim it if possible. If this is not possible, then all that remains is to rearrange the radiator. A plumber can help you deal with this; most often the procedure takes less than a day.

It is necessary to choose the correct size of the window sill or make it ventilated

To find out if the problem is with the slopes, you should determine what they are made of. If they are puttied or plastered, it is necessary to replace them with plasterboard products. This material has high thermal insulation properties, so you don’t have to worry about cold penetration into the room.

To others important point is the insulation of a wall directly facing the street. This is especially important if it has a large surface area. Insulation can be organized externally or internally; a specific option should be considered based on the selected insulation.

Wall insulation prevents fogging of plastic double-glazed windows

If none of the solutions described above solves the problem, all that remains is to admit that the reason lies in the double-glazed window itself or in the quality of its installation. Most likely, mistakes were made during the production process. The only help here is experienced master, who will be able to inspect problem windows and, if necessary, make repairs.

Traditional methods

As already mentioned, the reason why plastic windows fog up is high humidity. Accordingly, to solve the problem you need to get rid of it. It is necessary to act consistently. For example, when cooking, and especially boiling, you should use a hood so that all excess moisture comes out immediately. Also, do not let the kettle boil for too long, releasing clouds of steam.

Using a hood in the kitchen prevents the accumulation of excess moisture in the house

If the windows are already fogged up, you can dry them by pointing a fan at them. Another, even more affordable option is a pair of burning candles that are placed on the windowsill. Not only will they be able to dry the entire window opening, but they will also highlight carbon dioxide, which plants like so much.

A burning candle is a romantic way to get rid of condensation on glass

To others interesting solution will become a special chemical aerosol for the car. First, you should thoroughly wash the windows, and then apply the composition. True, you must act with extreme caution; while working, you must wear a respirator on your face and gloves on your hands.

For the correct direction of air flows, convection screens can be made that direct heat from the radiators to the windows. They are made at an angle to the battery and disguised as all sorts of beautiful decorative elements.

Convection screen directs heat from the radiator to the window

It remains to note one of the most interesting and at the same time radical methods. Everyone knows that better protection is an attack, so this methodology involves turning cold windows into a full-fledged heating element. First you need to glue a nichrome thread, foil or conductive film around the perimeter of the glass, through which you need to apply a voltage of 24 volts. Today you can buy materials in almost any hardware store. True, before installation it is better to once again consult with a specialist.

Installation of double-glazed windows with electric heating

And finally, a very simple, effective and not at all expensive way to get rid of fogging is to create an additional chamber by installing a transparent PET sheet. Anyone can perform this procedure after watching this video:

It is worth understanding that foggy windows are not the norm. They indicate excessive humidity, which in turn has an extremely negative effect on the inhabitants of the house. The problem itself can be solved quite simply, you just need to devote a little time to it.

The question often arises as to why double-glazed windows sweat in an apartment or private house. There are many factors that contribute to this process. To eliminate the problem, first of all, you need to figure out which of the reasons led to the formation of condensation. Otherwise, the moisture on the glass and plastic profiles in the apartment will not disappear. The result will be the formation of fungus and mold.

Why do windows sweat?

Cause this phenomenon– condensation that falls on the cooled surface of an object. For this to happen, two conditions must be met: a change in temperature and humidity in the room. The boundary at which moisture changes from vapor to liquid is called the dew point.

For each temperature and humidity level in a room, there is a certain limit for cooling the surface of an object. For example, if the air in the apartment is heated to 20 degrees and the humidity is 40%, dew on the glass will appear when it cools to a temperature of 6 degrees.

Increased humidity levels speed up the condensation process. If the climate of the area is characterized by high humidity, it will not be possible to completely remove the cause of moisture on the glass. It is only necessary to promote artificial drying of the air in the apartment, for which special devices have been created today.

Causes of window fogging

Condensation on glass can occur under different conditions:

• in the mornings, when the air temperature outside the window is lower;
• during cooking, in this case the glass fogs up in the cold season (winter, autumn, spring);
• the problem makes itself felt throughout the heating season;
• The double-glazed windows in the house are sweating only on one of the windows.

If such manifestations occur, it is worth seriously considering the question of why this is happening. Manufacturers stipulate that small, but most importantly, irregular and short-term fogging of glass falls within the norm.

Excessive tightness

What to do if the windows practically do not let air in from outside the room? Plastic window blocks are known for their tightness, which guarantees a reduction in heat loss from the room. However, this advantage also back side– the window will not allow air to enter the house, which means ineffective natural circulation air and subsequent fogging of double-glazed windows.

For solutions this issue Manufacturers have provided the possibility of adjusting the sash using elements such as trunnions. With their help, you can transfer the structure to summer or winter operation. The decisive factor in this case will be the pressing force of the sash.

Excessive humidity

Another reason why double-glazed windows sweat is due to increased microclimate parameters. In particular, we are talking about relative humidity in the apartment. Regulations determine maximum level this parameter is no more than 40%. All indicators that are higher than the specified value indicate an increased moisture content in the air.

Installation of exhaust valves

You can control the humidity level yourself, using hygrometers. But what to do if such a problem occurs? Air dehumidifiers should be used.

Manufacturing defect, low quality product

Typically, designs offered at low cost are of low quality. IN different cases this may mean installing cheap fittings that do not last long and cannot be repaired, or flaws in the design of the product: errors drainage system or when assembling a window unit.

What to do in such situations? A lot depends on what kind of defect occurs. In some cases it is necessary to replace the entire window, in others it is enough to replace the double-glazed window. And it’s better not to save money when buying a new design.

Low efficiency of the home heating system

If the windows sweat, and along with this nuisance there is a coolness in the house, we can consider the possibility that the cause of condensation is insufficiently heated heating pipes. To fix the problem, you need to determine the condition heating system: in an old house, to improve the microclimate, it may be necessary to replace communications and equipment.

Optimal and acceptable standards temperature, relative humidity

In new buildings, it is enough to adjust the heating level of the radiator (with local heating control) or to make up for the loss of the already missing heat with an electric heater.

If one of the windows fogs up or all of them at once due to the window sill protruding too much, then in this case the problem is solved different ways: you can install an electric heater next to the window, change the dimensions of the window sill, or move the battery a little further.

The cause of condensation is the wrong size of the window sill

The first two methods do not require large expenses. But moving the radiator will entail significant costs.

Poor ventilation

Natural air circulation in an apartment often deteriorates after the installation of plastic windows. Therefore, this consequence is eliminated by installing supply and exhaust ventilation. One of the mistakes in this case is incorrect calculations of the productivity level ventilation system for air outflow and inflow. This leads to too much heat loss from the room or, conversely, to excessively slow air circulation.

To fix the problem, you need to select the right equipment or adjust existing ventilation taking into account the size of the room and the number of people regularly staying in the room. You can increase the air flow in the apartment by installing a supply valve directly in the structure of the plastic window. In this case, it is necessary to configure its operation as accurately as possible.

It is important that from below door leaf There was a gap at the entrance to the problem room. If necessary, exhaust ventilation is installed, however, this decision easier to implement in private housing.

Most difficult situations those that are associated with manufacturing defects of the product or its low quality. In the worst case scenario, you will have to replace the window unit. The choice should be made not by price, but by characteristics and, guided by the reputation of the manufacturer.

With the arrival of winter, many owners of plastic windows are faced with a fairly common problem - condensation appears on the surface of the glass. Most limit themselves only to regularly wiping the windows with a rag. Some even use various aerosols that prevent dew drops from forming. But is this the way out? Why do windows sweat in winter? What are the reasons and how to fix it?

This is exactly what we plan to talk about next. I would also like to note that the Teplo Doma company is engaged in solving any kind of problems associated with plastic windows: and so on. If you don’t have time to delve into all these processes, then just contact our online consultant, who will explain what and how to do.

Main causes of fogging

Are you tired of constantly cleaning your windows from moisture, and you have a firm intention to sort everything out? In this case, you can start.

Why do windows sweat in winter? There are a number of reasons for this:

• Poor ventilation in the room.
• Wide window sill, blocking the heating of the glass.
• A lot of indoor plants.
• Humid weather outside.
• The room is not ventilated.
• Pass renovation work.
• Poor heating.
• Etc.

However, all these reasons are nothing when the very essence of why plastic windows sweat in winter is not clear. Of course, each of these reasons has a right to exist. But they all lead to the same thing.

Dew point

Yes, the “dew point” is to blame for everything. What is this anyway? If in simple language, then the dew point is the temperature at which the air cools, followed by the release of the moisture it contains in the form of condensate. That is, if the windows in an apartment sweat in winter, it means that the window temperature is close to the “dew point”. All this is difficult until this sign is in front of your eyes. It clearly shows under what conditions the windows will begin to fog up.

So, what do we understand from the table presented? The fact that wooden windows sweat in winter is influenced by three components: ambient temperature, relative humidity air, as well as surface temperature(in our case, glass temperature). If you control all these indicators, then you will never encounter fogging.

Leakage of interpanel seams

There is another common reason why apartment windows sweat in winter. And her name is . The fact is that all joints and seams must be waterproofed. But in reality, not all companies do this kind of work when installing a plastic window. As a result, water gets into the cracks that remain after installation. Then it is absorbed into the insulation, which is located in the window panel, and from there it falls out in the form of condensation onto the window. By the way, the insulation can absorb up to 200 liters of water. So you shouldn’t be surprised that the windows sweat.

Do you want to get rid of this scourge? Contact the specialists of the Teplo Doma company. They will inspect your window using a thermal imager, find places where the interpanel seams are leaking and seal them.

Windows in your apartment sweat in winter: what to do?

Many people think that window fogging is due to improper installation or operation of the plastic window. Of course this is not true. Moreover, if plastic windows sweat a lot in winter, this means that they are fully operational.

So what to do, how to get rid of this problem? Try to control the three components mentioned above.

If the plastic design provides, it means inner part the double-glazed window does not receive the necessary heating. As a result, its temperature drops, and this, as you understand, leads to the appearance of condensation. It is worth reducing the size of the window sill and the problem will most likely be solved.

It also happens that blackout curtains interfere with air circulation, eventually everything ends in condensation. Replace the curtains or open them more often, and you will be happy.

Many people like it when indoors many colors. Some people think that this way the air will be better saturated with oxygen. However, everyone forgets that plants, in addition to oxygen, also produce a lot of moisture. Let's add to this pets and other residents. As a result, the air becomes oversaturated with moisture, which falls on the windows in the form of condensation. It’s clear that you won’t get rid of the tenants, but you can evenly distribute the plants among the rooms.

Why do plastic windows in an apartment still sweat in winter? Because of poor ventilation and ventilation. The air in the room stagnates and does not circulate. As a result, it becomes saturated with moisture, which turns into condensation. Try opening a window and ventilating. Yes, turn on the cold, but the house will be fresh and no moisture. You can also look towards forced ventilation. It will also help get rid of problems.

If you started repair, then humidity in the room cannot be avoided. All you can do is ventilate and dry the air well.

Why do windows in a private house sweat in winter? Maybe it's a matter of doing it wrong heating system? Radiators must be located under the windows. This way, warm air will heat the surface of the glass unit, and will also serve as a cutoff for cold air trying to penetrate from the street.

There is one good way get rid of excess moisture. This is possible with the help of a dehumidifier. Of course, this device is not cheap, but it copes with its functions perfectly.

What to do to prevent windows from sweating in winter? Take a comprehensive approach to solving this problem. The fact is that there may be more than one reason, so you will have to thoroughly understand everything.

Important! If condensation forms on the windows from the inside, look for a problem in the room: temperature, humidity, and so on. The metal-plastic construction has nothing to do with it.