In recent years plastic windows are very widespread. And not the least role in this was played by the optimal ratio of their cost and quality. However, there are situations when a plastic window also fails.

One of the most common flaws is condensation, fogging of the window and as a result - the formation of puddles on the windowsill.

This disadvantage, if not eliminated in time, can lead to much more unpleasant problems, such as the spread of mold on windows, walls and ceilings.

So, let's figure out for what reasons plastic windows leak strongly.

Why do plastic windows leak in winter?

The most common reason for condensation on the glass, window frames and the accumulation of pools of water on the windowsill is the temperature difference on different sides of the glass, this difference can sometimes reach 30 degrees or more.

In order to reduce or even minimize the occurrence of such a problem, it is worth initially making a choice in favor of windows with double glazing.

The advantage of such a window is improved thermal insulation: an air gap between the triple panes will smooth out the temperature difference.

Plastic windows are flowing and there are puddles on the windowsill (water)

Another problem can be observed when the waterproofing layers are broken.

In this case, condensation does not form, but whole puddles of water appear on the windowsill.

This problem can be solved relatively simply - you need to take care of the restoration of the waterproofing layer: examine the near-window area from all sides for cracks of any depth.

The most common places where cracks occur are where the frame comes into contact with the wall. Cracks are sealed with alabaster mortar or special waterproofing primers.

Plastic windows leak strongly

Also, the most common reason is considered to be incorrectly carried out work on the installation of windows.

For example, windows can fog up if a professional has incorrectly installed the slopes and made insufficient insulation.

The space between the wall and the slope panel should not remain, if there is such a space, it is filled with cement mortar or other heat-insulating material.

The fourth most common cause of this problem is excessive sill depth.

In this case, heat fluxes from heating appliances, due to the excessively wide dimensions of the window sill, are not able to balance the temperature of the space near the window.

The glass itself forms a layer of cold air with a thickness of 10 to 15 centimeters. Again, the temperature difference leads to condensation.

Why are plastic windows still leaking, reasons

The next reason for the appearance of water on plastic windows is a recent renovation. Priming, plastering materials, cement mixtures and even the pasted wallpaper contains a large number of moisture.

High humidity in the room after the renovation, coupled with some temperature difference, can also cause this effect.

Another reason for the appearance of condensation on the windows is insufficient ventilation of the room.

Even with a significant temperature difference outside and inside the room, in the event correct device ventilation systems, the likelihood of condensation will be minimal.

Besides the usual ventilation system(hood and conventional blower), the air conditioning system can also reduce the air humidity.

With the exception of inverter-type air conditioners, which do not pump the produced air out and pump in new air, but only drive the available volume of air in a circle, during which its humidity, of course, does not change.

To solve this problem in the kitchen during the preparation of a large number of dishes, ventilation will help, in extreme cases, the micro-ventilation mode.

Having considered all the reasons why plastic windows are leaking, let's summarize how you can avoid this problem:

1). make a choice in favor of a double-glazed plastic window;

2). make a choice in favor of a standard size window sill;

3). monitor the stages of installation and insulation, when installing a plastic window;

4). pay attention to the operation of the ventilation system;

5). make sure that the waterproofing is not broken and, if cracks are found, take action;

6). periodically ventilate the room.

And also you can watch the video why plastic windows fog up?

Selected for you:

Sometimes people, having installed plastic windows, are faced with a problem - when the cold weather sets in, it is unclear what causes the glass to fog up and leak. This makes it difficult to see, worsens the lighting in the apartment, preventing the penetration of light.

Also, favorable conditions are created for the appearance of fungi and mold. Many people think that this is the fault of the installer's mistakes, but there are still many factors leading to the accumulation of moisture on the glasses.

Why condensation forms

There are many reasons why plastic windows in an apartment are leaking, and in order to get rid of condensation on the glass, you need to understand what exactly triggered it. This could be:

• violation of the movement of air in the room. When the radiators heat up only a little during the heating season, and the temperature outside is rather low, the window cannot be heated as needed;
• with hot batteries, the formation of condensation can occur due to the large protrusion of the window sill, which blocks the access of warm air directly to the glass;
• if the radiators are equipped with protective screens, they prevent the flow of heated air flows to the lower part of the window;
• too humid air in the apartment. This can happen when drying laundry after frequent washing, preparing food, etc .;
• there is no high-quality ventilation (not functioning or clogged), as a result of which moist air does not escape;
• poor-quality installation with violations of technology - the gap between the opening and the window profile is poorly sealed. In addition, the ebb may be incorrectly installed - it is simply attached to the window, while it should be placed on the base from the solution;
• during installation, the level could be violated and a skew formed, therefore the gaskets of the sash do not fit tightly;
• during repairs - when the newly pasted wallpaper, the laid tiles release moisture, which condenses on the glass;
• the quality of the seal also plays a role, since a gap may form between the frame and the glass unit, from where cold will seep;
  the formation of condensation also depends on what kind of fittings, as well as whether its installation meets the rules - whether it allows the shutters to close tightly or not;
• poorly performed work on the insulation of external or internal slopes;
• the adjustment of the plastic window also affects the fogging of the glasses: the fit of the sashes may be insufficient.

Preventive measures

They are used when there is a problem, but it is not too pronounced. One of the reasons why plastic windows leak in winter is the presence of pots with home flowers on the windowsill.

Living plants and the moist soil in which they grow very often lead to condensation. To get rid of it, it is enough to remove all the flowerpots from the windowsill.

It is also necessary to regularly arrange ventilation, especially if the humidity level rises from time to time.

Usually there are no vents in plastic windows, so you need to open the transom. This is important in the kitchen while cooking, as well as drying the washed linen in the apartment. It is necessary to install a hood in the kitchen, and it is advisable to cook in pans covered with lids.

1. It is advisable to keep the windows in microventilation mode at all times by turning the knob 45 degrees and making a gap for outside air to enter.
2. It is necessary to check how effectively the ventilation in the apartment works - a thin sheet of paper should stick to the grill of the hole. If it does not hold, the ventilation ducts need to be cleaned;
3. In a single-chamber profile, the distance between the glasses of the package is minimal, and there is only one air gap. Due to temperature changes, especially in cold winters, condensation will certainly form. It is better to choose a two-chamber profile.
4. If the slopes are not insulated, this must be done. Styrofoam can be used as external insulation. Cement mortar you need to carefully cover up the gaps between the window and the opening. For internal slopes, foam is not used. Basalt or glass wool is used here.
5. Reduce the width of the window sill or move the radiator a little further from the wall. Also, for better access of warm air, it is necessary to equip the windowsill with convection gratings or drill holes in it. If decorative grilles are installed on the batteries, it is better to get rid of them.
6. Check window hardware for wear from time to time as it may need adjustments or replacement parts.
7. V winter period it is necessary to transfer all windows to the appropriate operating mode, using the eccentrics at their ends.
8. A dehumidifier can be purchased. But first measure the humidity with a hygrometer. Humidity rate for comfortable stay in the apartment should be 40-70%.

What to do if the plastic glass unit is of poor quality?

When the above methods do not help, and you cannot understand why plastic windows are leaking, it means that they are of poor quality. Perhaps a defect was allowed in their manufacture, a low-grade profile was used, or all installation conditions were not met. In this case, it will not be possible to fix it on your own.

Sometimes the glass fogs up inside the bag. This means that it is necessary to remove and replace the seal or even the glass unit itself.

You don't need to think that you can do it on your own - only specialists can do it. There are certain nuances that you may not know about and make mistakes.

If the manufacturer or the company that carried out the installation gives a guarantee for at least a year, you can, having identified this problem in winter, contact them. They are obliged to eliminate defects or defects in installation. Otherwise, you will have to purchase a new window and pay for its installation again.

Outcomes

By taking preventive measures or following the indicated recommendations, you can prevent the formation of condensation on the glass. But if, after trying several methods, you did not achieve this, contact the specialists who installed the windows.

2

If your plastic windows are constantly covered with moisture, this problem should not be ignored. Ignoring dampness, you run the risk of encountering the formation of mold and mildew in the apartment.

In most cases, dew loss on glass is associated with a high level of humidity in the room, and in this case, neither the glass unit repair nor its replacement will bring results.

The source of the problem may be in the window itself. To get rid of water on, you need to find the cause of its occurrence.

The liquid that covers the surface is condensation. It occurs when water passes from a gaseous state to a liquid state. The transition occurs at the moment of cooling of the substance. Accordingly, the colder the side of the PVC window, which is directed into the room, the higher the likelihood of drops forming on the glass.

The temperature near the window at which the vapor in the air turns into droplets on the glass is called the dew point.

Misting windows indicate problems with the microclimate in the apartment. These include:

• high humidity;
• poor ventilation;
• weak heating.

If everything is in order in the room with air exchange, and it is well heated, even the cheapest and most imperfect double-glazed window should not fog up.

When and where do the windows of the house fog up?

You may have noticed patterns associated with fogging windows. For example, in one part of the house, glass sweats more than in all the others, or condensation on the glass falls more often in the morning than at any other time of the day. Such observations help to identify the cause of fogging.

Glass "cries" in winter

Most often, the glass is covered with moisture in the winter. Dampness on the glass can be combined with the formation of ice.

Most likely, there was a significant difference between the temperature of the glass unit and the air temperature in the apartment.

With what it can be connected?

• The batteries in the apartment heat up too hot (25-29 ° C).

The heating system in the house was designed with the assumption that excessive heating is controlled by the flow of outdoor air from the cracks.

Replacing old windows with sealed double-glazed windows leads to the fact that the humidity and temperature in the apartment rises, and this is a sure way to the appearance of condensation on the glass.

• Perhaps cold bridges have formed in the plastic, due to which the air surrounding the windowsill becomes colder than the air in the room.

If you measure the temperature of the windowsill, it will be more than 5-7 ° C below room temperature.

• The window can be blown out.

Most often this happens in the area of ​​the vestibule. If blowing from under the lower loop, it freezes from the cold air coming from the street.

Plastic windows "sweat" in the morning

The formation of dew on the grass and water on glass in the morning are similar phenomena. The central heating mode may be to blame. In some houses, the heating is stronger at night than during the day. The temperature outside, on the contrary, reaches its minimum values.

Because of this, in the morning the air temperature near the windows reaches the "dew point" and drops are formed.

Only in one room

If you find a room in which the glass sweats more than the rest, then the humidity level in this room is increased or the air circulation is impaired.

The following factors can affect fogging:

• washing and drying clothes;
• the presence of an aquarium in the room;
• density and location of curtains;
• a large number of indoor plants;
• window sill width;
• the presence or absence of ventilation.

"Leaking" in the kitchen

The kitchen is always an area of ​​high humidity, it is here that it is possible to leak on the glass. If your hood does not work well, steam from the stove and boiling kettle will accumulate on hermetically sealed windows.

Problems in the house can also be sources of abnormal humidity in the apartment: a leaking roof, dampness in the basement, clogged ventilation.

Why do PVC windows sweat from inside the room?

If the glass is sweating from the side facing the apartment, you need to look for the cause of the fogging, first in the house, and then in the construction of the double-glazed window.

Humid air in the apartment

To find out if the humidity in the apartment meets the standards, get the simplest hygrometer. A humidity level of 55% is considered normal. Keep in mind that in frosty weather, the humidity in houses always decreases.

If the humidity is correct, you should look for flaws in the glass unit.

Impaired air circulation

Problems may arise due to non-compliance with the rules for installing windows and engineering communications... Perhaps the air circulation in the apartment is disturbed, since heating system designed incorrectly. What can be errors:

• the windows are not sealed;
• heating radiators are installed without taking into account the location of the windows;
• wide window sills prevent the passage of air between the glass and the battery.

It is possible to reduce heat losses if the enclosing structures are thoroughly insulated. Changing heating devices will also help distribute heat more evenly in the apartment. The problem of fogging windows is eliminated by warm floors and chiller-fan coil systems.

Freezing

If the glass is not blown by warm air, it becomes the coldest surface in the room and condensation settles on it. A wide window sill can interfere with the flow of heat to the glass. Another reason for freezing is insufficient tightness of the glass unit.

Overheat

The window can overheat and fog up in winter if the warm air surrounding the battery does not circulate freely around the apartment. In this case, you need to make changes to the heating system.

Lack of ventilation

Glasses become covered with moisture when water particles constantly "hang" in the air. When the air is cooled to a certain level, the water vapor thickens enough to form droplets. Ventilation can solve this problem.

Pay attention to ventilation in the house - its poor performance can be the cause of abnormal air humidity.

In old houses, ventilation was designed taking into account the fact that the house will have wooden windows... An air handling unit in the apartment will help to improve the situation with air exchange.

Apartment renovation

High humidity in an apartment after or during renovation is a normal situation. You can protect windows from condensation by tightly covering them from the inside with polyethylene. Then moisture will settle on the film, and the glass will not sweat and will not be covered with ice.

Adjustment or part problems

The window can get wet if you forget to set it to winter mode. Poor fittings can also disrupt thermal conductivity, preventing it from closing tightly.

Check the sealing gum periodically. They can become unusable over time, as a result of which the glass freezes and becomes covered with water or ice.

Small glass unit thickness

The glass may be damp due to the fact that you have installed a glass unit that does not match the profile. When choosing the thickness of double-glazed windows, the climatic conditions of the region must be taken into account.

The desire to save money by purchasing a thinner and cheaper glass unit will result in problems with the thermal conductivity of the product.

Unsuccessful installation

Condensation can occur due to an illiterate installation of a double-glazed window. What mistakes can the employees of the company that install the windows make:

• poorly sealed assembly seam;
• the package is too close to the outer surface of the wall;
• loose fit of the window sash to the frame.

Window craftsmen should help you choose the PVC package suitable for climatic conditions your region and warn about the possible risks associated with the choice of not the most successful design. For example, installing a wide window sill for flowers can disrupt air circulation.

The video tells about the reasons for the fogging of plastic windows.

Can there be moisture inside the glass unit?

To avoid the formation of condensation, it is necessary to install double-glazed windows with several chambers (at least two-chamber) or one-chamber energy-saving type. Moisture build-up is not always a sign of a defective product.

Defective glass unit

If you find moisture or frost between the panes, you should contact the company that provided you with the window. Before you is an obvious manufacturing defect that is unacceptable according to GOST standards. In this case, the glass unit will have to be replaced.

The formation of liquid inside the glass unit indicates that it is not tight enough.

Single-chamber double-glazed window

Owners of single-chamber packages are more likely to face the problem of condensation, because this type of glass unit has weak thermal insulation properties. The exception is energy-efficient double-glazed windows.

How to solve the problem of fogging of PVC windows?

So, the main reasons for the formation of moisture on the windows are poor ventilation and high humidity in the house. How can the air circulation be regulated:

• install regelair on the windows - devices that allow a small amount of air to pass from the outside;
• change the foam on which the glass unit was installed;
• often ventilate the room or install supply ventilation;
• install underfloor heating, which ensure uniform heating of the room.

There is folk recipes to reduce condensation. The glass can be wiped with a weak solution of glycerin (a few drops per liter of water) or salt (a third of a glass per liter of water).

If your double-glazed windows regularly sweat, you should look for the cause of the problem not only in the windows, but also in the house. Even the best quality window can fog up when the air in the apartment is full of water particles.

Time to read the article:

Leaking windows are the most common winter problem faced by every second happy owner of PVC windows. And this is not so much a problem as a feature and a set of circumstances. And no matter how strange it may sound, if your windows are leaking - this is the first sign that they are installed correctly, hermetically and forever. As the well-known Elena Malysheva would say - this is the norm!

But! Puddles on the windowsills are completely useless for us, and mold and mildew - even more so. Therefore, right now you will learn 5 better ways solving the problem of current windows once and for all. But before we reveal the main professional window secrets, we will answer the most important question - why do windows flow? And someone may even ask "why do we need all this?"

Why do windows leak?

This question is best answered by one of the masters who saw so many crying windows in his life that he himself almost cries when the frosts begin, which once again confirms that you are not alone in your problem. But Anatoly does not see the problem, which he wishes to everyone.

Polyansky Anatoly

Solves any window problem for 20 years. Almost a real window fairy, if not for the mustache. He will fix everything as quickly and efficiently as possible, immediately calm down and give hope for the future.

Got problems with your windows? him right now!

Like tearing from the heart.

Anatoly, do not torment us. Why do plastic windows leak so often, despite the fact that they are so expensive?

Well, first of all, not only plastic windows are leaking. Wooden modern double-glazed windows are also often seen in this problem. The reason is not in the material, not in the price, not in the brand, not in the installer, and not even in the growing moon. The reason is only in three components: tightness, high humidity in the room and frost outside the window. In winter, logically, the temperature on the glass surface drops significantly and often reaches the dew point.

- The dew point sounds romantic, but it is not clear to the layman. What is it?

The dew point is something that haunts you almost daily. Mist in the bathroom mirror after taking a shower. Misted glasses after you entered a warm room from the cold. All these are manifestations of such physical phenomenon like a dew point. If you may be clever, this is the temperature at which air, with a certain temperature and humidity, can no longer absorb moisture.

- And what does this have to do with windows?

Directly. Outside the window frost and howling the wind, the husband wanted a hodgepodge, the child - pancakes. And here on the stove everything gurgles and squirt, the humidity in the room rises, the glass, of course, is cold in winter, so what? Hello condensation! The windows are leaking, there is a puddle on the windowsill, the hostess is in a panic, the hodgepodge is cooked. And this is just one example. You can do nothing at home and be the happy owner of crying windows. Drying clothes, flowers on the windowsill, some kind of aquarium and your breath, finally - all this contributes to an increase in humidity and hello, the most popular winter problem - leaking windows.

- And it so happens that none of this is at all, but the windows are still leaking?

There is always a reason. If not an aquarium with goldfish, then, for example, "wet" construction works(painting, wallpapering walls, etc.). Clogged ventilation, again. Plastic windows are airtight (if installed in accordance with all the rules and), fresh air from the street does not penetrate, ventilation does not perform its function. And the result is the same - stagnant air comes into contact with cold glass, condensation forms, and the windows flow.

- And where do windows most often flow?

In the kitchen, of course. Cooking, kettles, multicooker, proximity to the bathroom - all this contributes to the emergence of such a problem. And residents of the upper floors still often suffer from ventilation, through which humid and not fresh air from all the neighbors below.

- That is, the lower the floor, the better?

Is not a fact. The lower the floor, the closer the basement. Better in the middle if there is a question of choice.

- Somehow everything is not thought out with us. Bad downstairs, bad upstairs, the kettle boils badly.

We've just thought of everything. The fact is that the houses were built taking into account the fact that there will be a constant flow of fresh air through the cracks in the windows. Sealed plastic windows + old ventilation = condensation on the glass, or even puddles on the windowsills. And if the frost is strong, then there is also ice. The problem can be easily solved if, for example, forced ventilation fans with check valve... This is an option.

What other pitfalls are there? Let's say the house is new, and the ventilation is modern, and the floor is not the last one, and the soup is brewed once a year, and the windows are leaking. Why?

Heating. Perhaps the reason is in him. The apartment should be warm, the batteries should be in good working order and not be warmed up anyhow, but with all the efficiency. And they should be exclusively under the window! Batteries warm not only you, but also the window. Therefore, too wide window sills, thick curtains hanging in such a way that it is difficult for warm air to flow to the window, or, even worse, batteries covered by something - all this can lead to the window leaking sooner or later.

- And what do you do when you come to a client with a similar problem?

I take out the moisture meter. This is usually enough to make a diagnosis. And in 100% of cases the windows are not sick.

- And then what?

So how do you go on living? 5 simplest ways to quickly solve the problem of crying windows.

Ventilate more often

Your task is to achieve adequate indoor humidity and temperature. Make it a habit to ventilate the apartment (especially the kitchen) more often, and this alone may be enough to stop the windows from leaking.

Optimum air temperature - not lower than 20C

Optimal relative humidity- no more than 45%

Important! In winter, it is better not to use micro-ventilation, so that the window fittings do not become icy.

Turn on the fan

Yes, yes, the one that you usually turn on in the summer, in the heat. Aim it at the window and turn it on at minimum speed. To achieve the effect, we need the movement of air near the glasses and in such a simple way we will achieve it.

Why not? An excellent alternative solution if all other methods are not available to you or do not work for some reason. The problem will not be fundamentally solved, but it will definitely get better.

Repair the hood

Windows leak if it is clogged and does not function well. This is a very common problem of old houses or new ones with homemade exotic redevelopment from neighbors.

Minimize anything that increases humidity

Remove the flowers from the windowsill, change the blackout curtains for lighter ones, do not cover the batteries with anything.

Was it too lazy to read everything? The whole point in a nutshell!

So, we summarize everything that has been said above. The windows are not to blame. The installers are not to blame. The profile is not to blame. The glass unit is not to blame. And even Putin is not to blame. In fact, no one is to blame. Weeping windows is physics. But it is in our power to reduce its manifestations to a minimum.

Minus temperature outside the window + humidity in the room more than 45% + clogged ventilation = condensation and ice on the window.

Ventilate frequently, solve ventilation problems, release and adjust batteries.

Master of Architecture, graduated from the Samara State University of Architecture and Civil Engineering. 11 years of experience in design and construction.

Plastic windows perfectly fulfill their function: they perfectly retain heat, isolate street noise and keep the temperature in the room. But a frequent occurrence is the appearance of condensation on the glass in the cold season. Why do plastic windows sweat in winter and how to fix this problem?

Causes and consequences of fogging windows

The reason for the fogging of windows is hidden in physical properties water. Being in a gaseous state, it is invisible, but when the temperature drops, the so-called dew point is reached, that is, water vapor passes into a liquid. It is in this case that condensation forms, which settles on the plastic windows.

The reason for the deposition of moisture on the glass is high humidity

If the windows began to fog up from the inside, there can be only one reason - a defective glass unit... This element of the entire system must be sealed, and in case of violation of such a condition, water vapor enters, where it settles on the inner glass when cooled. This problem is eliminated by replacing the glass unit, the frame can be left.

Most often, however, condensation forms on the outer surface of the window. Why do plastic windows sweat in winter and how to eliminate this factor? There may be several answers to this question:

Subsequently, fogging leads not only to a violation of the view through the glass. Often this process provokes the emergence of worse phenomena:

• Freezing of windows and the formation of ice on them.
• Excessive humidity is the cause of mold, rot and mildew.
• Water and low temperatures gradually destroy the foam in the gap and violate the tightness of the entire system and the house.

Constant fogging of windows can lead to mold.

What to do with this negative impact and how to eliminate the causes of fogging windows?

Troubleshooting

If your windows are leaking, you need to establish the cause of the phenomenon. It happens that a situation arises as a result of placing a large number of indoor plants on the windowsill, which evaporate a large amount of moisture.

Adjusting windows

You can verify what is causing it by doing a simple inspection of the entire window. The first thing to do is to check the correct adjustment of the sashes and the degree of their locking.... This is done as follows:

• You can feel a strong draft by running your hand along the window.
• Set fire to a match or candle, if the light fluctuates, then the tightness is broken.
• Paper is laid in the sash and locked. You can pull out the sheet without any effort.

If deficiencies are found, proceed with the adjustment. The sash is set vertically and horizontally with screws located on the lower hinge.

To adjust the flaps, tighten the bolts located on the lower hinge

The degree of pressing is regulated by eccentrics at the ends of the window, as well as by tightening the pressure plates.

Transfer to winter or summer mode is carried out using eccentrics

Don't forget about seasonal window settings. To do this, the regulators are turned with a marker inward for the summer, and towards the street in winter.

Window sills

Often windows cry due to improper air circulation during the cold season. The reason lies in the wide window sills, which block the access of warm air masses to the surface of the glass unit.

In this case, in order to normalize circulation in the window sill, you need to drill several holes, which will provide normal access of heat to the glass.

Openings in the windowsill allow warm air to heat the glass

You also need to pay attention to the grilles that cover the heating radiators, perhaps they also impede air exchange.

Slope finishing

If the window was installed with violations of technology (leaking gaps, the frame moved), then you should contact the installation company. Installers are obliged to fix this problem free of charge.

An independent attempt to seal the gaps may not correct the situation, since the glass unit was originally installed incorrectly.

Finishing and insulation of slopes prevents fogging of windows

The situation is different with slopes. If the finish has not been done, it must be carried out immediately, otherwise it will lead to complete destruction. polyurethane foam in the gaps. To prevent the windows from crying, it is best to additionally insulate them using heat-insulating material ( mineral wool, foam or foam).

Fittings

Quite often, windows cry because of poor-quality or worn-out fittings. All mechanisms must function normally and smoothly lock the sash in compliance with normal pressure.

A damaged seal must be replaced.

Carefully inspect the seal. It must be elastic, without tears and cracks. If there is damage, and the elasticity is lost, they begin to replace it.

Ventilation

Ventilation of the room must be approached very carefully. This is especially true for rooms with increased level humidity (kitchens, bathrooms), where glass sweats most often in winter.

After all, plastic windows completely seal the room and impede air access from the street. The problem of air exchange can be solved in the following ways.

Check existing ventilation for blockages. This can be done by setting fire to a candle near the channel exits. If the light does not deflect, then the hood does not work. The grates are removed and cleaned until normal operation is restored.

However, in addition to the exhaust system, supply ventilation must also be present. This issue is resolved by setting ventilation valves on the windows.

Supply ventilation can be ensured with a valve built into the handle

Today there are modern supply systems installed in the window handle, they do not spoil appearance and provide an adequate supply of fresh air.

Providing a normal level of ventilation eliminates the problem of high humidity..

Thermal insulation

Single-chamber double-glazed windows are used in most non-residential premises where thermal insulation is not so important. If such a double-glazed window is mounted in the living room, then it will not provide adequate heat conservation.

Insulating glass with a film will not solve the cold problem

The problem can be eliminated by insulating the slopes and applying an energy-saving film to the glass. But these measures will not ensure full heat retention.

Optimizing humidity levels

As mentioned above, this phenomenon can be eliminated by ensuring normal ventilation of the rooms. However, if this does not help, then you can mount moisture-absorbing devices under the windowsill. Such cartridges are inexpensive in terms of cost, and their efficiency is quite high..

Recent renovations can contribute to an increase in humidity in the room. A large area of ​​plastered surfaces evaporates a huge amount of moisture, which ventilation cannot cope with. This is a temporary phenomenon and as the walls dry out, the moisture level will return to normal.

As a rule, these are the main reasons that windows cry in winter. When they are eliminated, the situation will return to normal and there will be no fogging problems.