Why do double-glazed windows leak. Why plastic windows sweat

Many people install plastic windows in their apartments and houses, which protect the premises from drafts, dust, wind and cold. However, they have one serious drawback - in winter, moisture falls on the windows, which leads to the appearance of mold on slopes, window sills and window profiles. Because of this, some are wondering: What to do if plastic windows cry?

Causes

To get rid of condensate, you need to figure out why they cry . The appearance of drops on glasses is directly related to the dew point. It determines the temperature at which condensation begins to appear. The dew point can change its value if one of the microclimate indicators changes in the room.

Condensation on windows

There are several main reasons why windows cry.

Ventilation

Most often, it is faulty or incorrect in the room that leads to fogging of windows. Over time, ventilation systems become clogged, which leads to disturbances in air circulation and a change in heat transfer. When air in an unventilated room comes into contact with the glass surfaces, condensation forms on them.

Often the windows are crying in people living on the upper floors of houses. Moist air from the apartments below gets into their ventilation.

Also, heat transfer is disturbed in the apartments of houses that were built according to SNiPas of the USSR. During the construction of these buildings, it was assumed that fresh air would enter through the cracks in the wooden windows. The installation of airtight makes it impossible for the natural flow of air, leads to the accumulation of moisture and the appearance of condensate.

Heating

It can also be the reason why the windows are crying. In apartments, you need to install powerful and reliable radiators that could provide good heat transfer. The window opening must be heated, so the battery must be placed strictly under the window.

The radiator should not be cluttered with foreign objects, as this may disturb the convection of moist air and lead to an increase in moisture.

Flowers

Plants on window sills look very nice, but a large number of flowers can disrupt heat transfer. Therefore, you should not force the window sill with flowers.

Lack of insulation and sealing

The place where the window adjoins the opening is a source of damp and cold air penetration. If the window seam is not insulated in time, then under the influence of ultraviolet radiation it will begin to collapse, which leads to the appearance of mold and the penetration of atmospheric moisture.

Condensation control

Not everyone knows what to do if they sweat and cry. First you need to assess the state of the microclimate in the apartment:

1. Air temperature measurement. Allows you to determine the efficiency of the heating system. The air temperature should not be measured near the window, but in the center of the room. If the temperature is below +20°C, this indicates poor heating efficiency.
2. Measurement of air humidity. The humidity level at room temperature at 20-25°C is about 50%, but in winter this figure can be critical if it is -15°C outside. In winter, the humidity level should be around 40%.

There are several ways to get rid of condensation on windows.

Temperature rise

Contributes to the heating of the surface of the inner panes of the window. For this you need:

• get rid of air congestion in the battery;
• flush or completely replace old heating radiators;
• make sure that warm air enters the window;
• turn on the heater or air conditioner.

Decrease in moisture level

It is achieved by mixing moist air with dry air. To do this, it is necessary to ensure constant air exchange in the room. There are a few tips to help you achieve this:

1. Extraction check. To do this, you need to attach a piece of A4 paper to the exhaust hole. If the hood is working properly, then the sheet will stick to the grate. In the same way, the ventilation in the toilet and bathroom is checked.
2. Ensuring the passage of air through the doors of all rooms of the apartment. To do this, make sure that there is a gap between the bottom of the door leaf and the floor.

If airtight doors are installed in the rooms, then special ventilation valves should be used, which should be located at the bottom of the doors.

1. Eliminate sources of moisture. These include a damp basement, leaky faucets, and leaky pipes.

Proper organization of air flow

To do this, you can use a wall or window inlet valve.

The wall inlet valve is a passive device that allows you to provide air from the street. The design consists of a plastic pipe, which is installed in the wall of the apartment. Installation of the wall valve is carried out near the window at a height of 1.5-2 meters from the floor, which allows:

• without problems to serve the lattice of the device, which is located outside;
• to get fresh air into the heat flow of air emanating from the heating radiator.

Also, when organizing the flow of air, several types of window valves can be used:

1. Without milling. Easy to install and dismantle. After installation, no traces remain on the window, except for a few mounting holes. Valves without milling have a low capacity, which is only 5 m 3 /h. In the absence of sources of moisture, this is enough to normalize the microclimate.
2. With milling. The performance of the valve reaches 50 m 3 / h, so it must be used in rooms with active sources of moisture.

Conclusion

Almost everyone faced the problem of accumulation of moisture or condensation on the windows. This problem is especially acute in rooms where plastic windows have recently been installed. Moreover, windows in different rooms can cry, leak and fog up in different ways and with different intensity. In order to avoid such a problem after installing a plastic window, you should study the reasons why PVC windows sweat, why condensation collects on them. Does it depend on the design of the window, the technology of its manufacture, or is it an error in the installation of the window, or defects in the building itself?
Initially, we will determine that the natural cause of fogging or condensation of water vapor on the cold surface of a double-glazed window is due to high humidity in the premises or a malfunctioning ventilation system.

It is believed that the most humid rooms in houses are the kitchen (water vapor is formed during cooking), the bathroom (drying clothes, bathing). Accordingly, an exhaust system is built, which usually consists of a kitchen hood and a hood in the bathroom. Fresh air in rooms equipped with such an exhaust ventilation system, and not supply and exhaust, as a rule, enters through natural cracks in window frames and entrance doors. However, the design of plastic windows is so hermetic that the natural exchange of air in apartments and houses is disturbed. As a result, moisture accumulates in the room and settles on the windows in the form of condensate. Therefore, a temperature valve should be installed in the windows or the house should be regularly ventilated.

In addition to disturbed air circulation in the premises, the reason for the accumulation of moisture on the windows may be the wrong window itself. So in cold climatic zones, windows are installed made of a five- or seven-chamber PVC profile and having a two-chamber double-glazed window with thermal insulation. For the southern regions, we can recommend windows from a two- or three-chamber profile and the simplest double-glazed window. For more information about PVC windows, click here.

Condensation can also appear on the glass when non-standard sealing methods were used during its installation, low-grade sealants, sealants were used, the seam between the wall and the window frame was incorrectly foamed. Sometimes the cause of fogging of windows is the mistakes of the builders of the building. For example, when the thermal insulation of the wall is broken, there is no waterproofing layer in the foundation, there is circulation of cold air in the wall structure. The latter is often found in brick buildings built more than 40 years ago.

When plastic windows flow, what should I do?

Sometimes when installing plastic windows, very strong condensation forms on them. When plastic windows flow, what should I do?
Causes of condensation on plastic windows
People say that when windows sweat, it means they are crying.

Why do windows sweat?
What causes condensation to form on plastic windows?

Plastic windows are leaking what to do

For the same reason that condensation forms on car windows, condensation forms on plastic windows. This is facilitated by the increased humidity of the air that is inside the room, as well as the temperature difference both inside and outside. Condensation may occur after repair work. Freshly installed tiles, paint, plaster, during the drying process, release moisture, which causes plastic windows to sweat. To avoid this process, you need to install an effective ventilation system. Windows can also sweat due to poor installation of slopes, which violates their tightness and leads to a significant decrease in temperature, which is the reason for the formation of condensate. Basically, plastic windows sweat in cases where the slopes are installed independently, without the involvement of specialists. Sometimes the presence of wide window sills also completely prevents the inflow of air heated from the batteries and leads to the formation of condensate. If there is a sharp temperature difference in the street and in the apartment, the windows begin to cry and leak ...
How to prevent condensation on plastic windows

what to do if plastic windows leak

To reduce the formation of condensation on plastic windows, you need to ventilate the room more often if you do not have an automatic air exchange system. It is also necessary to use plastic windows with a personal valve ventilation system. Usually the valves are installed in the plastic window itself. You also need to make sure that your ventilation is working properly. It is necessary to find out whether plastic windows collect condensate based on the results of finishing work. If this is the case, then it is necessary to invite finishing specialists and take measurements of air humidity with a special gyroscope.

From the experience of using plastic windows, it has been noticed that most of the condensate is collected by plastic windows with single-chamber double-glazed windows. Then it is necessary to systematically ensure an effective flow of warm air to the double-glazed window.

In this article, I will tell you how to properly wash windows without streaks and what is the best way to do it, what you need for this. You can use any of the methods for all types of windows.
Let's start with the most common way to clean plastic windows - washing with window cleaning spray, rags and paper. This method is usually used for washing lightly soiled and small windows, it is physically more difficult, but no less effective than cleaning plastic windows with a sponge screed. What do we need? window cleaning Clean cloth (cotton) Window cleaning spray (spray with spray nozzle) Paper napkins, newspaper Water container (basin, bucket)

How to do it? First, fill a container with a small amount of warm water, wet a rag, wring it out so that it remains damp, but in no case does it drip water and wipe the dirt from the window, so you will spend less time and money. Then, in a zigzag motion, spread the spray over the entire surface of the window. Take a clean piece of cloth and wash the window in a circular motion. To consolidate success, wipe the already clean window with paper napkins or newspapers. Your windows are as clean as ever! Washing sliding plastic windows with a window cleaning screed with a sponge on a long handle.

This method works best for windows that you can't get close to or need to reach for, in this case a 25-30 cm long tie rod is best for you. As a result of cleaning, there will be no streaks or any stains on the windows. What do we need? cleaning plastic windows Any window cleaner or dishwashing detergent Window screed with a long-handled sponge Water container Clean cloth or paper towels

How to do it? First you need to make a cleaning solution. Choose one that suits you best. There are several ways: 1. 1 tbsp. a spoonful of starch per 1 liter of cold water. 2. 50 g of bleach per 1 liter of water. 3. 1 glass of vinegar per 1 liter of water. 4. 1 tablespoon of ammonia per 2 liters of water 5. 5-7 drops per 2 liters of water. 6. 1 tbsp. a spoonful of ammonia per 1 liter of water. If the solution is ready, then dip the sponge into the cleaning solution, wring out the sponge so that the water from it does not flow down the window and leaves no marks. Plastic windows should be washed in a circular motion, carefully wipe the corners and edges of the window, they accumulate a lot of dust and dirt.

Then again draw clean warm water into the container, dip the screed there, then pull it from top to bottom along the entire height of the window, stop 2-5 centimeters from the bottom edge and, again dipping the screed into clean water, move on. At the end, when all the windows are wiped with a mop, wipe the screed with a dry, clean cloth and remove the water from the bottom of the window with a horizontal movement from left to right. Wipe the edges of plastic windows, corners and hard-to-reach areas of the window with clean paper towels or a piece of cloth, and also wipe the window sill, water always remains on it after washing the windows.

Sometimes, having installed new metal-plastic windows, people are faced with the problem that the glass, for some unknown reason, begins to “leak”. This phenomenon worsens the view to the outside, creates excellent conditions for the development of mold and fungi in the corners of the frame, and also worsens the lighting, blocking the sunlight. Therefore, everyone should know why this happens and how to get rid of it. Many people think that this is a mistake of the manufacturer or the installer, but no: condensation can occur for a huge number of reasons.

Why plastic windows flow: the main reasons

There are a huge number of reasons why plastic windows can “cry”, but we will consider only the main ones that are most common:

⇒ Incorrect installation technology. The most common and unpleasant reason for the formation of condensate is the negligence or inattention of the masters themselves, who install the double-glazed window. Even the slightest inaccuracy in or their displacement can lead to the fact that the glass begins to cool intensively under the influence of the environment. Due to the difference in air temperatures in the room and outside it, condensation of water vapor occurs, which is contained in the atmosphere.

⇒ High humidity. Very often, condensation on windows occurs due to excess moisture content in the indoor air. It, in turn, can be formed due to nearby sources of water or steam. It is also possible if: your apartment is located on the top floor; in the room there is a huge open aquarium with fish or other animals living in the aquatic environment; there are malfunctions with (leaks, streaks); drying clothes in a closed space. The above points are sources of formation of additional moisture, which, not being able to go outside, settles. All of these factors can point to the reason why plastic windows are leaking.

Favorable climate diagram and dew point

⇒ Repair. Mortars and adhesives are another fairly significant source of moisture. When applied to the wall, air circulation stops, and with it moisture, which leads to the concentration of an additional volume of liquid in the room. This is especially true in the winter period, when the difference between the ambient temperature and its indicator inside the room is quite significant.

⇒ impassable obstacles. Creating an impenetrable wall for air circulation in the form of a thick curtain or blinds is another reason for the formation of condensate. This is due to the fact that limited space and lack of movement lead to an increase in the concentration of moisture, which then settles on the windows. Also, any dimensional things standing on the windowsills, especially flowers, have a similar effect. They not only create an obstacle, but also release water into the atmosphere, which they draw from the soil.

⇒ Faulty ventilation. Air circulation and removal of heated masses is the goal of any ventilation system. If it is not performed, then vapors accumulate in the room, which after a while settle on the surface of the windows. Very often, because of this, the owners of apartments on the first low floors suffer.

Now the question of why plastic windows are flowing will not be an unsolvable mystery for you. But here's what to do in such situations, let's talk further.

How to get rid of condensation on windows?

In order to avoid water precipitation on the windows, you must follow these rules:

1. It is necessary to try to ventilate the room at least every 3-4 hours for 5-7 minutes. This will remove excess moisture from the room and prevent it from settling on the windows, as well as approximately equalize the temperature outside and inside.
2. It is necessary to replace all the curtains with thin and transparent ones, with a mesh structure. They will not block the circulation of air masses in the room, and can also serve as some kind of filter for moisture.
3. When choosing what is better to put on the windowsill, you need to give preference to small items. Things like flowers, any containers with liquids, automatic air fresheners should be set aside, because they are sources of excess moisture.
4. You can put an open flask with salt or lime on the windowsill. These substances perfectly absorb liquid, preventing it from lingering in the air.
5. If you find any installation violations, you must contact the company that provided you with the master, and point out inaccuracies and errors in the installation. After all, such oversights are the reason why plastic windows flow.

Thus, by following these simple and clear recommendations, you can reduce the level of humidity in the room and prevent the formation of condensation on the windows. Just a few simple movements and a couple of minutes of your personal time is all that is needed to solve the eternal problem with the "current" plastic double-glazed windows.

Relatively recently appeared in our apartments, at first made a splash. After all, their advantages, such as excellent sound and heat insulation, beautiful appearance, ease of maintenance, no need for regular repairs and seasonal insulation, were obvious to everyone. However, it soon became clear that their main property - tightness - is at the same time a big drawback, since it is because of it that plastic windows “cry”. What to do? There are several answers to this question, but before moving on to them, you should figure out why condensation forms on their inner surface.

What causes fogging of PVC windows

According to experts, in 99% of cases, plastic windows “cry”, because after installing them, the room turns into a hermetically sealed “jar”, ​​where there is no ventilation that allows fresh air to enter the room, and exhaust air to leave it. In addition, water vapor emitted by residents and indoor plants, as well as resulting from household activities, is not removed from the apartment.

Why wooden windows don't sweat

Most often, those who installed plastic windows in their apartments consider them to be “guilty” of the fact that the humidity in the apartment has increased. How else? After all, condensation did not form on wooden windows or appeared extremely rarely and in small quantities. The fact is that the old-style frames had many small slots, which, together with the hood connected to a special shaft, formed a ventilation system that did not allow exhaust air and vapors to stagnate in the room. Thus, today, when replacing wooden windows with more airtight ones, the owners break the ventilation, and plastic windows "cry". This is absolutely inevitable, unless, of course, additional measures are taken. In addition, sometimes double-glazed windows are not blown with hot air from radiators, which would prevent the formation of condensate. The reason is the too wide window sill or the presence of “wrong” curtains and other objects that violate the natural convection in the room.

“Tears” on a double-glazed window as a result of poor-quality installation and design flaws

Are your plastic windows "crying"? What to do depends on the cause of this phenomenon. For example, sometimes it can be caused by non-compliance with the technology at the stage of window production or improper installation. Therefore, if you are sure that everything is in order with ventilation and heating in your house, and your windows are “under warranty”, then it makes sense to call the craftsmen from the company from which you purchased them and demand to check if everything is in order . By the way, if plastic windows “cry” (what to do will be described below) from the inside, then this is usually the result of marriage, or rather, insufficient tightness of the double-glazed window, and you can safely demand to replace them.

The two easiest ways to get rid of window “tears”

Does the above mean that you should not install double-glazed windows in your house? Everyone makes such a decision for himself, comparing all the advantages and disadvantages of both options, as well as familiarizing himself with the ways to get rid of condensate on their inner surface. For example, the easiest way to get rid of fogging of PVC windows is to regularly ventilate the premises. It can be done either by setting the handle on the frame to the ventilation position (if it is provided for by the design of a particular model), or by opening the windows for 5 minutes every 2-3 hours. It should be understood that the second option will lead to large heat losses and is not suitable for those who disappear all day at work. As already mentioned, one of the reasons why plastic windows “cry” is poor convection. To eliminate it, it is enough to make several holes in the window sill, allowing warm air to heat the glass and reduce the “dew point”, and you should also, at least in the cold season, abandon curtains and shutters mounted directly on the frame.

Why plastic windows "cry": what to do (photo)

In addition to those mentioned above, there are more radical measures that require some financial costs. For example, those who are interested in why plastic windows “cry” (you already know what to do so that the window sill does not interfere with convection) have probably seen photos in which oblong devices of incomprehensible purpose are installed on the window frames. These are ventilation valves that, without human intervention, provide ventilation of the premises. Moreover, there are models that operate autonomously, and they do not require power supply. The only thing that needs to be done in order for the valve to work as it should is to check and, if necessary, clean and repair the exhaust ventilation in the apartment. Moreover, there are models that can be installed on an already mounted PVC window.

Why plastic windows "cry": what to do (reviews on measures)

Despite everything, it should be recognized that double-glazed windows have a lot of advantages. Therefore, having found out why plastic windows are "crying", many do not refuse to install them, but take the necessary measures to eliminate the shortcomings. Judging by the reviews, the installation of valves allows you to quite effectively cope with the formation of condensate on the windows and at the same time does not violate the sound insulation of the premises. In addition, such devices have a low cost, which makes them accessible to everyone.

Some apartment owners prefer to solve the problem of high humidity by installing split systems. This is a good but expensive option. At the same time, you should make sure that the selected model of the air conditioner has the necessary function of drying the air if its humidity exceeds certain indicators.

How to choose the “right” plastic window

In order not to ask questions after repairs in the apartment why plastic windows are “crying”, what to do and who to contact, it is better to immediately install a model that will not be subject to condensation. First of all, it is better that it be with an already built-in ventilation valve, so that later you do not have to install such a device. Also, experts recommend giving preference to two-chamber models that are less prone to condensation in the edge zones, and check whether the micro-ventilation function is provided. In general, you should immediately refuse to purchase a double-glazed window if the guarantee for it is less than 5 years.

Now you know why plastic windows "cry". What to do - you also already know, it remains to choose a good exhaust valve and enjoy all the benefits of double-glazed windows.

Installing plastic windows, we spend a lot of money, while we hope to get warmth, comfort and beauty in the house as a result, especially when the cold season comes.

But with the advent of winter, the windows suddenly become covered with numerous droplets of moisture and you see that the plastic windows are crying, you don’t know what to do.

As a result, only unnecessary problems appear: puddles form on the windowsill, dampness appears in the house, and sometimes even worse - mold and fungus on the slopes. Even if you wipe the window dry very carefully, water will still appear on it, sometimes trickling down onto the new window sill, leaving streaks and small puddles. What can I say, the phenomena are very unpleasant.

Faced with the problem of weeping windows, many of us begin to accuse manufacturers of cheating. That is why it is first of all necessary to dispel the myth of poor quality products. It is a paradox, but still, the fact that plastic windows are leaking is a confirmation that they are installed in accordance with all requirements: the windows are completely sealed and reliably protect your home from cold air entering.

So how to understand why plastic windows are crying, what is the reason and how to deal with this problem?

There is a widespread belief that only plastic windows get wet, but this does not happen with wooden ones. This is not true.

Any modern window under certain conditions (we will consider them below) cry, regardless of the material from which they are made - wood or plastic.

Of course, wooden Finnish windows, which have double frames, get wet less than, for example, single plastic or wooden euro windows. The reason for this is not at all in the binding material, but in the fact that two-frame structures are distinguished by higher thermal insulation properties.

Another example can be given: the old Soviet wooden windows, unlike the plastic ones that are fashionable today, almost did not leak. However, here also the material is absolutely irrelevant.

If old windows are provided with high-quality seals in the porch, and all gaps between window frames and glass are removed, then these old windows will also start to get wet, and even more than plastic ones.

Why do plastic windows get wet?

Why does condensation appear on them?

Condensation on windows is usually caused by a number of reasons.

The main reason is the increased humidity in the room.

In winter, the temperature on the surface of the plastic window drops significantly and often reaches the dew point. Experts call this the temperature at which air, which has a certain initial temperature and relative humidity, can no longer absorb moisture.

We encounter the dew point every day. For example, when you get out of the shower, you can see that the mirror in the bathroom is completely fogged up, or in winter, when you enter a warm room from a frost, your glasses usually fog up right away, and the windows cry.

There is a widespread belief that only plastic windows get wet, but this does not happen with wooden ones. This is not true. Any modern window under certain conditions (we will consider them below) cry, regardless of the material from which they are made - wood or plastic. Of course, wooden Finnish windows, which have double frames, get wet less than, for example, single plastic or wooden euro windows. The reason for this is not at all in the binding material, but in the fact that two-frame structures are distinguished by higher thermal insulation properties.

Another example can be given: the old Soviet wooden windows, unlike the plastic ones that are fashionable today, almost did not leak. However, here also the material is absolutely irrelevant. If old windows are provided with high-quality seals in the porch, and all gaps between window frames and glass are removed, then these old windows will also start to get wet, and even more than plastic ones. Why do plastic windows get wet? Why does condensation appear on them?

Condensation on windows is usually caused by a number of reasons. The main reason is the increased humidity in the room. In winter, the temperature on the surface of the plastic window drops significantly and often reaches the dew point. Experts call this the temperature at which air, which has a certain initial temperature and relative humidity, can no longer absorb moisture. We encounter the dew point every day. For example, when you get out of the shower, you can see that the mirror in the bathroom is completely fogged up, or in winter, when you enter a warm room from a frost, your glasses usually fog up right away, and the windows cry.

Why is there high humidity in the room? There are many reasons for this. Moisture is always released in the kitchen during cooking, when drying and washing clothes, taking a shower or a hot bath, using the toilet. Houseplants located on the windowsill or an aquarium in the room are also sources of moisture. The person himself, moreover, when breathing, usually releases about 50 g of water per hour.

In addition, the cause of condensation on plastic windows can be

next:

• carrying out construction works or repairs of apartments using such wet processes as painting walls with water-dispersed paints, plastering, pasting walls with wallpaper, whitewashing ceilings, etc .;
• various redevelopments in the house, which were independently carried out by the tenants without taking into account design standards, in violation of the existing ventilation system, as well as the demolition of interior partitions.

Ventilation

Often the reason why condensation on plastic windows is incorrect or faulty ventilation in the house. In apartments, ventilation systems are arranged in this way: an exhaust hood in the bathroom or toilet, as well as in the kitchen. Over time, the hood can simply become clogged with debris, which often accumulates here, and fail. In addition, plastic windows have a very high degree of tightness, and this prevents the penetration of street air into the room. As a result, the heat exchange in the room changes dramatically - the stagnant air of an unventilated room comes into contact with the cooled window glass, on which condensation forms.

This problem is especially acute in rooms with increased activity. First of all, the kitchen can be attributed to such premises. It is here that many multifunctional household appliances are located, in addition, it is often located next to the bathroom. In such areas, it is clear why plastic windows are leaking.

Often, residents of the upper floors of houses face the problem of weeping windows, since dirty, moist air penetrates through the ventilation holes from the apartments below. Of course, windows on the first floors also often leak, since dirty air comes here from the basement or through the floor slabs. To avoid strong condensation on plastic windows, it is enough just to equip the ventilation openings in the apartment with forced ventilation fans with a check valve. In fact, the houses that were built according to the USSR SNiPs are designed for the fact that the air flow into the premises will be carried out through the slots in the windows (the principle of supply and exhaust ventilation). Sealed plastic windows practically do not allow air to pass through, which makes natural air flow impossible. Because of this, moisture accumulates in the apartment, which later falls as condensate on PVC windows, and in severe frost, frost forms on the aluminum frame.

Heating

The central heating system plays a very important role in the problem of condensate. Radiators must be serviceable and quite powerful. In another case, the apartment may have insufficient heat transfer and low temperature. Batteries must be strictly under the window. It should be borne in mind that heating radiators perform a very important function - they heat the window opening. If you install too wide window sills above the heating radiator, this can lead to difficulty in the convection of warm air from the radiator, and therefore, the moisture content will increase. Make sure that the radiators are not cluttered with foreign objects. Often, curtains and curtains in apartments touch the window sill, which is why a sufficient amount of warm air does not enter the window opening.

How to deal with condensation on windows?

The best way to resist the formation of condensation on plastic windows is to achieve a uniform distribution of humidity and air temperature in the room. According to sanitary and hygienic standards, the optimum air temperature should not be lower than twenty degrees Celsius, and the relative humidity should not be higher than 45%.

When the windows cry what to do with the room? Do not forget to air it regularly, at least three times a day. It should be noted that in winter, it is better not to use the micro-ventilation mode. To avoid freezing of window fittings, as well as hypothermia of slopes, it is better to fully open the window for about 5-6 minutes. This time is enough to remove all excess moisture from the room, while the heat from the room does not have time to leave.

If you are only planning to install plastic windows, choose window frames with the thickest possible profile to reduce depth. You will lose, or rather, not gain, just a couple of centimeters of the window sill, but you will definitely have much less hassle. In addition, it is worth ordering a triple, not a double-glazed window. Also suitable double with one more additional glass. In this case, you will have absolute sound insulation, and the windows will not freeze even in forty degrees of frost.

If you have already installed plastic windows, then the problem of leaking windows, what to do, can be solved only with the help of forced ventilation. In other words, it is necessary to somehow organize air exchange in the window niche.

How to do it? Below are a few simple ways.

1 way - romantic (very easy and cheap)

In winter, when it is very cold outside, put a few candlesticks with slowly burning candles on the windowsill, as close to the glass as possible. Thick decorative candles are best suited. For the whole winter, just a couple of candles per window will be enough for you. The costs are quite small, but the result is very significant. Of course, this is not about the heat that you get when burning a candle, but about the convection of air that is formed during the combustion process. In addition, a candle is also very useful for plants on the windowsill, because it drives carbon dioxide for them, and, as you know, for indoor flowers, this is a favorite delicacy.

2 way - advanced

If there are no plants on the windowsill and plastic windows are crying, and you are a fan of witty technical solutions and love to make something with your own hands, then try making convection screens. These are such narrow plates that transport warm air from the radiator to the window niche. The plate should be fixed at an angle of 30-60 degrees to the window sill. So part of the warm air will be forcibly directed to the glass. If you show imagination, then such screens can easily be made an original piece of decor. It should be noted that this is a rather laborious method.

3 way - the easiest

Almost every home has fans. As a rule, they work only 3-4 months a year when it is hot. But during the period of cold weather, they can be used again for their intended purpose, because in the window niche you just need to create any movement of air. Therefore, you can simply set the minimum airflow rate and, if possible, set the fan in such a way that it blows several windows at the same time.

4 way - chemical

Now that you know why plastic windows are leaking, what to do with them becomes immediately clear. Buy at the auto cosmetics store any anti-fog aerosol that is used to treat car windows so that they do not get wet. Treat apartment glasses with such an aerosol. Remember to thoroughly wash and dry the window first, and then apply the anti-fogging agent to it. This will lower the dew point of the glass a little. True, this method cannot radically solve the problem. In addition, such aerosols are quite expensive and contain many specific chemical compounds and substances.

5 way - exotic

Stick a thin conductive film or foil around the perimeter of the window and apply low voltage (about 12-24 volts) to it. It will warm up that part of the window that is most prone to freezing. In other words, make glass with electric heating, like in a car.

So, if you carefully make sure that the technology for installing plastic windows is fully observed, choose a high-quality design, and then constantly monitor the level of humidity in the apartment, then you will definitely never again see excess moisture flowing through your plastic windows.