Why are the windows crying? Causes and what should be done to eliminate crying. Why plastic windows "cry" What to do to eliminate the phenomenon Plastic windows cry in winter what to do

The question is why new plastic windows are crying in wooden house, is not unusual, since there are many reasons for this, from malfunctions in the building itself to malfunctions in the window itself. But before accusing the company of installing a bad product, you should figure it out yourself and solve the problem as soon as possible.

Causes of the problem

Such formation can be caused by a number of sources. The main cause of fogging windows is high humidity in the house.. During the frosty period, the temperature of the window surface decreases. At the same time, a temperature is reached that, by cooling the air, cannot absorb all the moisture. A similar phenomenon can be observed on the mirror when bathing in the bathroom or on glasses when one enters a warm room from a cold room.

The main reason windows fog up is poor ventilation.

If there are troubles with windows, then the problem lies in a faulty ventilation system. Often ventilation is installed in the kitchen and bathroom. If the hood is not cleaned, then over time it can collect a bunch of debris and fail.

In addition, the new windows have a high degree of impermeability, which prevents outdoor air from entering the house. Therefore, as a result, condensation forms, since there is a constant change of heat in the house, stagnant air comes into contact with the chilled glass. Often this unpleasant situation occurs in the rooms where they work, in the kitchen with many functional household appliances or in the bathroom.

In addition to tightness, the window itself may have an overly wide double-glazed window. Only airing the rooms will help to regulate the level of moisture in the house, you can use an air conditioner, but in order to really have a productive result, you need a good and high-quality system. When installing double-glazed windows, it is best to pay attention to their thickness. Universal and optimal thickness - up to 7 cm. Large thickness will interfere with other characteristics of the window.

Also cause similar problem to windows in wooden building may:

construction or repair work indoors, where wet processes are used, plastering, painting, whitewashing ceilings, etc.;
redevelopment in the building, in which the rules may not be taken into account and violated when designing ventilation;
destruction of interior walls.

Solution to the problem

What to do to eliminate an unpleasant situation? Below are some recommendations:

It would be nice to get windows with two cameras. The second chamber will be able to keep the temperature, eliminating the sharp difference between the inner and outer panes.
On the windows, purchase tilt-and-turn fittings, which will delight you with the winter natural ventilation mode. At a certain turn of the handle, a small gap of up to 3 mm is formed. Such a small gap not only protects against the likelihood of catching a cold and getting sick, but also maintains a fairly comfortable air temperature and humidity in the room.
If possible, do not install wide window sills. They contribute to the free movement of warm air around the entire perimeter of the window.
Try to ventilate the room regularly and several times a day, at least for 5 minutes. All accumulated room moisture should go outside.
The solution to the problem begins with the correct and high-quality assembly of plastic windows in the house. Incorrect installation leads to the appearance of condensate, incorrect temperature distribution on the slopes, and then they can bloom.
In case of severe cold, a few burning decorative candles can help. It is enough to put 2-3 candles on the windowsill closer to the glass. This is a simple and cheap way, but the result is quite significant. The solution to the problem is not in the heat from the burning of a candle, but in the heat transfer from the process of burning it. Candles also benefit houseplants by bringing their favorite carbon dioxide closer to them.
An exotic option is to seal the glass with a film or foil and apply low voltage (up to 24 V) to it, creating the effect of an electric heater.
Use conventional fans. Although they are usually used in the heat, they may also be needed in winter time for the same purposes, since they will create air movement. Therefore, we install a fan near the windows and select the minimum airflow mode. Well, if the fan action extended to several windows.
Buy a special aerosol anti-fogging window, which is used to properly condense the air in cars. It is possible that this chemical method will not be able to completely solve the problem, since aerosols are very expensive and contain various chemical specific substances.
One advanced way to solve the problem is to construct convection screens. If there are no plants on the windowsill, the question is why the windows are crying, then technology lovers can make narrow plates that can transport warm steam from the radiator to the window cavity. The plate is attached to the window sill at an angle of up to 60 degrees. Then you can ensure that part of the heat will be directed and warm the glass. Having shown imagination, these screens can be made an original part of the decor in the room. However, remember that this design is a very painstaking work.

Conclusion

It is necessary to choose high-quality and proven products in order to avoid the problem of “weeping windows”, carefully monitor the technology for installing plastic windows in a wooden house. And then regularly monitor the temperature and humidity in the house.

If the windows are installed correctly and tightly, then you need to calm down and realize that the problem is purely aesthetic in nature, since the windows themselves do not suffer or deteriorate from excessive moisture.

More articles on this topic:

Why plastic windows cry

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 appear unnecessary problems: 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 get wet, and even more so 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 high humidity air 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 go out of the cold into warm room- glasses usually fog up immediately, and 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 get wet, and even more so 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:

conducting 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 residents without taking into account design standards, in violation existing system ventilation, 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 SNiPs of the USSR are designed for the fact that the air flow into the premises will be carried out through the cracks in the windows (principle 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 system plays a very important role in the problem of condensate. central heating. 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 the radiators are not cluttered 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, optimum temperature air should be at least twenty degrees Celsius, and relative humidity - not 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 window fittings, as well as hypothermia of the 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, place several 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 spray 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.

At school, in physics lessons, such a concept as the dew point is studied. It is this that is the key to answering the question of why plastic windows cry. The dew point is the specific temperature at which water vapor in the air condenses. At positive temperatures, droplets of water are formed, which is called dew. When negative, this water crystallizes. But what happens to the windows? Let's take a closer look

Causes of "tearfulness"

Moisture on windows, fogging of mirrors and pipes with cold water in the bathroom, dew in the early morning have similar causes. No matter how much humanity would like to achieve perfection in any manufactured product, reality constantly makes itself felt. By replacing old windows with plastic ones, happy owners of modern achievements dream of warmth and comfort in their home. But often their expectations do not match reality.

Sweaty glass and water on the windowsill upset you? Is it worth starting a debriefing with a seller of "low-quality" products? Yes, because in fact, manufacturing companies are ready for such a turn of events. They can quickly resolve all issues related to consumer dissatisfaction.

Provocateurs of the formation of excess moisture on the glass

Product Defect

What should be a plastic product:

a) no visible damage;
b) without dust, moisture and leaking sealant in the middle of the double-glazed window;
c) the weld is in the same plane with the profile or a recess of a maximum of 5 mm in width and 1 mm in depth is allowed;
d) a single-chamber window has 2 glasses, and a two-chamber window has 3. This is easy to check. You need to light a match or lighter, bring it to the glass and look from the side to see how many reflections you can see. Their number will be equal to the number of glasses.

Wrong installation

How to properly install a window:

1) the product must be mounted in a window opening in accordance with the calculations made (it is up to the company responsible for this area of work to determine the dew point to significantly reduce the amount of condensate in the future);
2) the distance between the frame and the wall is filled with mounting foam, a special insulating tape is attached outside;
3) the product must be level, distortions are not allowed;
4) the window sill should go under the frame by a maximum of 1 cm.
5) the junction of the window sill and the frame is sealed with silicone;
6) the edges of the window sill should enter the wall by about 2 cm.

The first signs of poor-quality installation:

a) tight opening / closing, jamming;
b) loose closure (blowing);
c) when opening/closing the window, the frame wobbles;
d) unfilled gaps between the frame and the wall are visible;
e) when closing the sash sags.

Impaired ventilation

This may be directly related to the replacement of old windows with new ones. After all, modern designs are airtight and do not allow air from the street to enter the room. Turns out the old wooden windows were part of the ventilation system!

Due to the redevelopment of an apartment or house, ventilation is 100% unable to perform its functions. The same can happen in old houses due to wear and tear. As a rule, hoods in houses are only in the kitchen and in the bathroom. Ideally, they should be in every room.

high humidity

The higher the humidity in the room, the higher the dew point. For example:

humidity 60%, air temperature +20 degrees - dew point - +12 degrees;
humidity 80%, temperature +20 degrees - point - +16 degrees;
humidity 40%, temperature +20 - point - +6 degrees.

The dew point in this case is the temperature of the surface of the window pane.

We solve the problem step by step

To solve this issue with minimal time, money and nerves, you need to find the cause of the inconvenience. And then purposefully solve them, perhaps with the help of specialists.

1. Check the integrity by carefully examining the structure. If damage is found, you can contact the company that sold and installed the products. There is a chance to achieve warranty service, if it is provided. If not, you may receive a replacement discount.

2. Check the quality of the installation. It is better to invite an expert in this matter. Or try to determine it yourself, based on the relevant points in the subheading above.

If errors are found, then you can contact the company that installed the windows. And settle the claim. If the competence of the masters is in doubt, it is better to find a more reliable organization for reinstallation.

3. Check the humidity in the room. The most accurate instrument for measuring humidity is a hygrometer. The optimum humidity for humans is 40-60%. Windows are less likely to sweat when the humidity is minimal. Therefore, it is recommended to monitor this indicator and adjust it in order to avoid unpleasant consequences.

To reduce the humidity in the room, you need to ventilate it often and, if possible, remove objects that are its sources. For example, for lovers of flowers that grow in large quantities on window sills, condensation on window glass is a constant phenomenon.

After repair, increased humidity is observed. This is due to the use of large amounts of water, for example when wallpapering or laying tiles. This phenomenon is also observed in newly built houses. It has also been proven that in a dream a person releases about 2 liters of moisture. The fact of closed doors is important here, in which there is no air movement.

4. Check the condition of ventilation. Open the window, bring a piece of paper to the vent. If the paper is attracted, everything is fine. If not, you need to understand the reasons. Perhaps the channel is clogged or the neighbors walled up the pipe.

If the ventilation is working properly, then the moist air exhausted by the lungs is drawn out of the room. and replaced with a fresh one. Ideally, ventilation systems should purify polluted air and saturate it with useful substances.

In the last century, ventilation based on natural air circulation was used. Installing modern ventilation is not cheap, so not everyone can afford such a pleasure.

Everyone can do the following:

Ventilate any living space at least several times a day for 15-20 minutes, while opening the windows wide open.

Curtains also prevent the movement of air from the radiators to the windows. Therefore, it is recommended not to use them during the cold season or to collect them in such a way that they do not interfere with air circulation.

If wide window sills are installed, then it is recommended to put burning candles on them. It is better to use thick ones that burn slowly.

Buy modern facilities from fogging windows. They are most often used by motorists, although no one forbids picking up something for the home.

Put a fan that will move warm air from the battery directly to the sweaty window.

Make or buy special devices in the form of plates that are attached to the edge of the window sill and direct air from the batteries to the window.

To avoid problems associated with low-quality PVC windows or their installation, you need to:

Carefully choose a company that sells and installs plastic windows. You should study the documents of the organization. Certificates for the manufacture and installation of the relevant products must be available. It is recommended to check the quality of window installation before signing the acceptance certificate. Claims in the presence of a document certified by signatures are not accepted.

If visible product defects or installation errors are found, it is recommended not to sign the act until all defects are eliminated. After all, reinstalling windows will take a lot of time and money. Not to mention the spoiled mood and shattered nerves.

It is best to use the services of serious companies that give a guarantee on their product. The longer its term, the higher the quality of the windows. The warranty is given separately for the installation, fittings, profile, sealing rubber and double-glazed windows. Deadlines may vary. All the nuances will be indicated in the warranty card.

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.

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, in addition, when breathing, usually releases about 50 g of water per hour.

In addition, the cause of condensation on plastic windows may be as follows:

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 residents without taking into account design standards, in violation of the existing ventilation system, as well as the demolition of interior partitions.

Ventilation

Often, residents of the upper floors of houses face a problem, since dirty, moist air penetrates through the ventilation openings 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.

http://www.youtube.com/watch?v=Oak0zSRCzIQ Video can "t be loaded: Fighting condensation on plastic windows (http://www.youtube.com/watch?v=Oak0zSRCzIQ)

How to do it? Below are a few simple ways

1 way - romantic (very easy and cheap)

2 way - advanced

If there are no plants on the windowsill, and you are a fan of witty technical solutions and like 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

4 way - chemical

Buy at the auto cosmetics store any anti-fog spray 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

Weeping windows are a fairly common problem among both apartment owners and owners of private houses. As a rule, the problem of condensation is encountered in the cold season. Many people think that only plastic windows cry, and old wooden ones bypass this problem. Deep delusion. If in wooden windows close up all the cracks, equip them with a good seal and completely eliminate blowing, then condensate will form on them with the same efficiency.

Are you tired of walking around the house and wiping misted windows? Do you want to understand the problem and fix it permanently? This article will help you with this. No time for this? Contact the company Heat House. We deal with all kinds.

The proposed material will consider the reasons why plastic windows cry, as well as several ways to solve this problem. So, we're getting started.

Plastic windows are crying a lot: who is not to blame?

First of all, I would like to immediately mark the innocent. Installing plastic windows, people spend a lot of money. Naturally, in return you want to get coziness, comfort and warmth in the house. Well, there is no desire to associate plastic windows with streams of condensate running down the surface. Therefore, people take a rag in their hand and begin to wipe the moisture that has formed. But this does not help, and the condensate forms again.

And this is where the search for the culprit begins. Of course, you don't want to blame yourself in the first place. That is why installers, the weather, window manufacturers, the poor quality of metal-plastic structures, and so on and so forth become to blame. However, here is the paradox - if plastic windows cry in winter, then this, on the contrary, proves the innocence of the manufacturer and installers. How so? But you will understand this when you figure out why plastic windows cry in winter.

Why do plastic windows cry?

So, the most common reason that condensation appears on the windows is the current interpanel seams. During installation, the joints and seams should not only be blown out with mounting foam (and with high quality), but also treated with sealant. It would be better if, during installation, specialists additionally lay waterproofing material. In this situation, you will never encounter the fact that interpanel seams flow. Otherwise, moisture will begin to make its way into your house. First she will find a loophole in the seam, then in mounting foam, and now she is already in a heater, which is able to save it for a long time and give it away. Moisture evaporates, as a rule, into the room, because it is warm there. Well, then it just falls out in the form of condensate on a plastic window. This is how a few unfinished joints can affect the comfort in the house.

To prevent this from happening, during installation, you should insist on observing all the necessary steps. If you have already encountered a problem, then it will help to solve it. good master. In order to detect such a problem, you will need special equipment with which a specialist will find a leak and fix it quickly and reliably.

Why is this happening?

It is clear that the condensation on the windows is quite unpleasant. Besides, this is not the only problem. Condensation is just an unpleasant consequence. But the consequence of what? Combinations of room temperature and relative humidity when in contact with a colder surface. In this case, a double-glazed window acts as a surface.

Why do plastic windows sweat and cry? Warm air, saturated with room moisture, comes into contact with a cold window. What is the result? If the temperature of the double-glazed unit is below the dew point, the air in its immediate vicinity is no longer able to absorb moisture, as a result, condensation begins to form on the surface of the window. That's actually all.

What is this dew point and how to determine it? Its value can be taken from the presented table.

That is, now it should have become clear to you why the plastic windows in the house are crying. It's all about the dew point. But what provokes its appearance?

Why plastic windows cry: reasons

In short, the main reasons have already been named: temperature and humidity. That is, it is worth putting them in order, and the problem will be solved. According to sanitary and hygienic standards, the recommended indoor temperature is at least 20 degrees, as for relative humidity, it should be about 45%. If these rules are followed, in most cases it is possible to avoid a situation where plastic windows freeze and cry.

In general, here is a list of reasons that affect the appearance of condensate:

Bad ventilation.
Wide window sill.
A large number of indoor plants.
Wet weather.
Lots of people in the room.
The room is poorly ventilated.
Repair work.
Weak heating.
And etc.

Let's try to explain.

If indoors poor ventilation which means the air is stagnant. If the air stagnates, then moisture remains in it. If moisture remains in it, then it will eventually fall out in the form of condensate on the window.

How wide window sill got into the causes of crying plastic windows? Radiators in every house are located under the window. If the window sill blocks the flow of warm air to the window, the surface of the double-glazed window will cool more, and this will inevitably cause the appearance of a dew point.

Houseplants absorb and release a lot of moisture. If you do not put it anywhere, it will fall out in the form of condensate.

Why do plastic windows cry? On the street wet weather. How is this related? Everyone tries to ventilate the room more often. But few people think about the fact that outdoor humidity can reach 100%. When you ventilate a room, you let moist air in. Yes, it may be that the house becomes fresher, as the air saturated with oxygen enters, but at the same time it is still saturated with moisture. Many people forget about this. If the room is not additionally dried, then condensation cannot be avoided.

If in a small unventilated room is many people sooner or later the air there will be saturated with moisture. Even with normal breathing, one person releases about 50 grams of water per hour. Needless to say, how much moisture enters the air when bathing and cooking?

Repair work- this is always the way to a wet room. We will not go into details, we will limit ourselves to one rhetorical question. Where does the moisture go when, for example, the cement slurry dries up?

Weak heating. If the room is poorly heated, and it is cold outside, then together with the dew points condensation will appear in the form of ice.

The reasons seem to have been sorted out, but what to do next? More on this later.

We declare war on weeping windows

Plastic windows sweat and cry: what to do? Of course, take action. And the sooner the better. If condensation regularly falls on the windows. So, most likely, the air in the room is oversaturated with moisture. And high humidity, as you know, leads to the formation of pathogenic fungi, which by no means can have a beneficial effect on human health.

The first step is to make sure that the temperature in the room, as well as the relative humidity of the air, comply with the standards. To do this, you need to purchase a conventional thermometer and hygrometer. As already mentioned, the temperature should be at least 20 degrees, and humidity should be about 45%. If you are convinced that the air in the room has other values, try to bring them back to normal.

First, let's go through the reasons and try to eliminate them:

Make good ventilation.
Reduce window sill.
Move half of the plants to another room.
Try to control humidity during bad weather.
Reduce the number of people square meter. Joke, of course. Simply, as in the previous case, you must try to control the humidity.
It is better to ventilate the room.
There is no escape from the repair work.
Take care of good heating.

How to deal with crying plastic windows? Try to follow everything that has been listed.

One thing remains unclear how to control humidity? If everything is extremely simple with the temperature in the room, then what about the humidity? The most common way to get rid of moisture is a combination of ventilation and heating. Due good heating and constant ventilation of the room is possible, albeit not easy, but to get rid of moisture.

Thanks to modern technologies, there is another way called "air dryer". The device, of course, is expensive, but in some cases it is very useful. A dehumidifier can control the humidity in your home for a modest fee of 250 Wh.

Crying plastic windows: how to fight? It is possible to install double-glazed windows consisting of low-emission glasses instead of conventional double-glazed windows. However, keep in mind that you, of course, will solve the problem with condensate, but you should not forget about the humidity of the air either.

That, perhaps, is all.

Weeping windows: repair in Moscow

If you have a problem, but there is no time to solve it, then Teplo Doma will be happy to help you. Why do plastic windows cry in an apartment, in a house: what to do, reasons, how to fight? Lots of questions you don't know the answers to. Just contact our online consultant. Soon a master will visit you, look at the windows and help you fix any problem associated with them.