What to do if plastic windows "cry"? Why plastic windows sweat Why plastic windows flow what to do

13.11.2019

Fogging of plastic windows: causes and remedies.

Plastic windows are very well adapted to any climatic conditions. It is also worth noting that they do not require special care and do not require painting, which greatly facilitates their operation.

But, unfortunately, like any thing, plastic windows have their drawbacks. The main thing, perhaps, can be called their periodic fogging. It is about this problem that we will talk today, and also try to find ways to solve it.

Why sweat, cry plastic windows in an apartment and a private house?

It will not be news to anyone that everyone wants to equip their home as best as possible. Interior decoration apartments and houses, the choice of interior - all this is necessary and important. But you must admit that not only these things determine how comfortable and cozy you will be in your own home.

Today, the issue of choosing windows is also relevant. For the last few year s plastic windows occupied a leading position among all other species. Such windows are in great demand, as well as popularity, and it is well deserved.

Thanks to a number of advantages of plastic windows, more and more people are opting for them, throwing away their old wooden frames without any hesitation. What are the benefits?

For those who don't know yet, we'll tell you. Firstly, this is an excellent tightness, thanks to which the heat in the house will be preserved as much as possible, and extraneous sounds will not disturb. Secondly, it is their durability.

To begin with, I would like to make it clear that fogging is the appearance of water directly on the surface of the window. It is this formed water that is called condensate. Reasons why windows sweat both in an apartment and in a private house, regardless of what it is built from, there is a huge variety.

Let's look at the main ones:

Poor assembly and installation. There is an opinion among people that this is the very first and most common cause of weeping windows. But as much as you would like to believe it, it is not. Yes, this happens. And most often this happens due to the inexperience of the master or low-quality components, but, unfortunately, no one is immune from this. To reduce your chances of getting into a similar situation, take the choice of a master, and the windows themselves, with all seriousness.
The most common cause of misted windows is lack of good ventilation in an apartment and a house. In order to fix this problem, you need to take some time for your ventilation grilles and clean them if necessary.
Do you believe that your loved ones houseplants standing on the windowsill, can provoke such inconvenience? If not, it's very useless. Due to the fact that some plants emit too much moisture, the plastic window can easily fog up.
Lack of ventilation. Remember that any room, room, whether in an apartment or in a private house, must be ventilated without fail. By the way, this can not only help get rid of foggy windows, but it will also be good for your health.
A fairly common cause of weeping windows is the location of the window sill directly above the battery. Due to this arrangement of the window sill, the air circulation in the room is disturbed, a temperature difference appears, which leads directly to the formation of water droplets on the window.

In principle, windows fog up, both in the apartment and in the house for the same reasons. It is worth noting, perhaps, only a few factors:

In private houses windows "cry", as a rule, due to the lack of a constant supply of fresh air. That is due to poor ventilation. If in new private houses there is at least some kind of ventilation system, for example, in the toilet or in the kitchen, then in old houses everything is limited to the door. It is because of this that we get both dampness, and mold, and drops on the window.
On the balcony, in principle, as in the whole apartment, possible cause"Weeping" windows can easily become repairs, both ongoing and already completed. It happens because the same recently laid tile or just pasted wallpaper emit a lot of moisture, which can settle on the window.
in winter plastic windows sweat much more often. The reason may be that your window is equipped with a thin double-glazed window. Such a double-glazed window does not cope in the required volume with the task of energy saving, and therefore it will regularly fog up.
Also, the reason that the windows “cry” in winter may be that it is already cold and sub-zero outside, and your windows are still working in summer mode.

Why do plastic windows sweat a lot in winter from inside the room and outside, condensate inside the double-glazed window?

Earlier we mentioned that in winter the windows “weep” much more often and fogging occurs not only from inside the room, but also from the outside, and sometimes even inside the window. What can be the cause of these phenomena? Now we will try to figure it out.

We will immediately reassure you - there is nothing wrong with the fact that the windows fog up from the outside. You can even say the opposite. It happens because abrupt change in temperature. The resulting condensate is absolutely harmless to your home, if there are installed ebbs. If the tides are not made, then the condensate can easily drain into the wall, which you naturally do not need. If you see that the window is “crying” from the outside, be sure that the double-glazed windows are selected and installed correctly.
O causes of fogging windows from the inside we've already talked. It is worth saying only that correctly selected and installed windows, as well as maintaining the desired humidity in the house or apartment, will help you not to face this problem.

Sometimes fogging occurs not outside, but inside the double-glazed window. If your window began to “cry” in this way, know that the problem is in violation of the sealing of the double-glazed window. And this, in turn, only says that: either the product itself is of poor quality, or an inexperienced master installed it for you and made a mistake.
Misting window inside indicates that the window, in principle, cannot properly perform its direct functions - thermal insulation and noise insulation. Therefore, such a double-glazed window needs to be replaced. By the way, if such a case is specified in the contract as a guarantee, then the double-glazed window should be replaced for free, and if not, then you will do the replacement for your own money. That is why we recommend paying special attention to these points.

It is very important to correctly determine the cause of fogging windows, because the method of solving the problem depends on this.

"Weeping" windows in the apartment and house: how to solve the problem?

There is enough a large number of ways to eliminate "weeping" windows. So, let's talk about the most effective and common:

If you are aware of high humidity in your apartment or house, make it a rule to ventilate the room daily. It is also necessary to remove all indoor plants directly from the windowsill, because they emit moisture, which then in the form of condensate will settle on the window.
Ensure the room is well ventilated.
If your window can work in two modes, then do not forget to use this function. Accordingly, in winter your window should not be in summer mode, and in summer - in winter.
Do not save on buying windows, remember - the miser pays twice. Since you have decided to replace old windows with plastic ones, choose the highest quality ones. Properly selected and installed windows will serve you for many, many years.

In the absence of a hood in the kitchen, it would be nice to purchase one. And use regularly while cooking.
If possible, windows should be kept on the "ventilation" mode. This will ensure a constant flow of air.
Do not forget that over time, all things break or wear out. Therefore, it will not be superfluous from time to time to check the integrity of the fittings, and, if necessary, to replace components.

How to process plastic windows so as not to sweat?

Another option to eliminate "weeping" windows is their regular processing.

Of course, if there is an opportunity and a need (in case the windows sweat a lot) - buy special means, which are designed directly to eliminate condensation on windows. Such products, when applied to windows, create an invisible film that helps repel water. You can buy them in good household chemical stores, and you can also order them in the store where you purchased the windows. Be sure to read the instructions carefully before use.
No less effective is window treatment with saline solution. To do this, you need to dissolve a tablespoon of salt (without a slide) in 5 liters of water. Filter the solution, thereby removing the crystals of undissolved salt. Then wipe the window with the already prepared solution. If after this procedure streaks or white marks remain on the window, dilute the solution with a little water, and repeat wiping again.

You can also use soap solution. Get some water and add just a little bit of any detergent. Soak a microfiber cloth in the resulting solution, wring it out well and wipe the window. Then rinse the window well with clean water and dry with a dry microfiber cloth.
A solution of water and alcohol. It is recommended to use such a tool when the room is cold enough. Alcohol needs to be added quite a bit. Such a solution is quite easily applied to glass, while creating a good protection against moisture.

We now propose to go to folk remedies elimination of "weeping" windows. Agree, we all quite often resort to similar methods of solving problems, so why not use these tips in this situation as well?

So that the windows do not sweat, what needs to be done: folk remedies

So, let's begin.

Condensate elimination method using decorative candles. To do this, you need to purchase several decorative candles, preferably large ones, light them, and place a foggy window on the windowsill. People's advisers assure that in the process of burning candles, the heat generated will normalize air circulation, thereby eliminating condensate.
The use of a well-known tool "Second". The liquid must be sprayed onto the problematic window, and then wiped dry with newspapers. It is necessary to pay attention to the fact that the liquid should be distributed evenly over the entire glass, otherwise there will be no effect in places where it is absent. Newspapers must be new and clean.
Fans. This method also aims to normalize the air flow. The fan must be directed to the “weeping” window and after 10-20 minutes the problem will be fixed.

Window chafing mixture of glycerin and alcohol. To begin with, remember that the ratio of these components must be strictly 1:10. How it works? Everyone is well aware that alcohol is very easily and quickly weathered. So, having applied such a solution to the glass, the alcohol will quickly disappear, but glycerin forms a thin film that will prevent water from settling on the glass. So clean your windows first. warm water, wipe with a window cloth. good option wipes will be microfiber. Spread the mixture evenly on the glass and leave it on without rinsing.

So, today we touched on a topic that interests a huge number of people - the purchase, as well as the installation of plastic windows, and the problem of their fogging. From the foregoing, it is not difficult to understand that there are a lot of reasons for this unpleasant phenomenon, and in short, it is either the wrong installation of the window by the master, and excessive savings, as well as the choice of low-quality products, or high humidity, lack of good ventilation and improper operation of the window.

In order to avoid such unpleasant moments of using popular plastic windows, we recommend that you follow the tips that we have repeatedly described today, in particular, follow temperature regime and control the humidity in the room, as well as regularly ventilate. Following all these tips and careful attitude to the windows, will provide you with a comfortable stay in your house or apartment.

Video: Why do plastic windows sweat?

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 do you understand why 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), they 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 flow. 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, glasses usually fog up immediately.

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:

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 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 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 ventilation holes in the apartment with forced ventilation fans with 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 radiator, this can lead to convection obstruction. warm air from the battery, in connection with which, 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, 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 is worth noting that in winter period, 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)

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 the street is very very coldy, put on the windowsill, as close to the glass as possible, several candlesticks with slowly burning candles. 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 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

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

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.

Why plastic windows sweat

Do windows sweat?

Complaints about the appearance of water and sweating of windows can often be heard from owners of even high-quality double-glazed windows, but in fact, “sweating” is nothing more than simple moisture condensation. Why does it occur and how to deal with it?

Most often, fogging of windows occurs:

In the morning, until about 10 o'clock.
Only in winter in cold weather.
Only in one room and only one window, while everything else is fine.
With the simultaneous flow of the window sill.

So why do they sweat?

What does a foggy window look like?

Most often, moisture condensation spreads from the bottom up, with accents to the edges of the glasses. Water sweat is a set of small droplets, which, gradually connecting, gather into large drops and puddles.

What to do? Most often, dissatisfied users call insulating glass companies, accusing employees of providing low-quality windows or improper installation. The most common complaint is: “Our old windows didn’t have this, but your glasses are leaking!”. And any assurances of the company's managers in the high quality of windows run into a wall of misunderstanding. But in fact, the reason for the high condensation of moisture on the windows are certain factors that act both individually and collectively.

Origin of condensate

Condensation on glasses is formed when water vapor passes into a liquid state, and than colder room where the window is located, the greater the likelihood of moisture condensation. In addition, the degree of condensation depends on the level of humidity in the room. In professional language, this is called reaching the "dew point". Dew appears on plants in the morning because the increase in air temperature near the grass is not as fast as the air temperature in general, and at the moment the “dew point” is reached, the evaporated moisture settles on the surface, gathering into drops. The fogging of windows has the same nature.

Using the table below, you can find out the air temperature near the windows, at which condensation will appear on the window. For its appearance, as mentioned above, you only need to have a certain temperature in the room and the level of humidity in the room. Humidity is measured special device- hygrometer.











On the left is the percentage of humidity in the room. Above is the temperature in the room.

So, we figured out the fogging, but why did the old windows sweat less? In fact, they were not warmer at all, they just had more space between the glasses in the frame, due to which the inner glass heated up more than in similar conditions in a modern single-chamber double-glazed window.

Single-chamber double-glazed window

Best when installing windows in own house or an apartment do not save, and purchase a more expensive option. A single chamber window will show you what "window fogging" is pretty quickly.

What to do: change the double-glazed window.

Battery covered by window sill

To heat the inner glass, the window must be blown normally room air, and the battery closed by the window sill prevents the circulation of heat.

What to do: think about another source of glass heating, change the design of the window sill, move the battery forward.

Poor ventilation in the room

Moist air remains in the room because the ventilation is clogged or not working.

What to do: clean the ventilation ducts and grates, check if they are clogged.

Flowers on the windowsill

Fresh flowers constantly emit moisture in the course of their life, which settles on the double-glazed windows.

What to do: arrange the flowers in some other place.

Windows not converted to winter mode

Windows in the summer mode of operation do not warm up as well and have worse thermal insulation compared to the winter mode.

What to do: switch windows to desired mode

The room is ventilated less than 10 minutes per day

Stagnation of air in the room causes an increase in humidity levels, which leads to moisture condensation on the glass.

What to do: Ventilate the room regularly for more than 15 minutes a day.

Mistakes made during installation

Sometimes, although very rarely, it happens that fogging is caused by installation errors or incorrect slopes. As a result, the windows are cooled due to constant blowing, which causes moisture condensation on the glass.

What to do: remove the cause of cold air intake.

Often moisture condenses on windows that are in the kitchen, where humidity levels tend to be highest. Therefore, for the kitchen, it is best to take care of purchasing windows with double-glazed windows, which have good thermal insulation performance.

And remember - windows do not emit moisture themselves! The appearance of droplets, most often, is not caused by a window defect, but by other reasons.

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Sometimes people, having installed plastic windows, are faced with a problem - when cold weather sets in, it is not clear why they begin to fog up and leak.

Why plastic windows sweat

This makes it difficult to see, worsens the lighting in the apartment, preventing the penetration of light.

Favorable conditions are also created for the appearance of fungi and mold. Many people think that installer errors are to blame for this, but there are many more factors that lead to moisture accumulating on the glass.

Why does condensation form?

There are many reasons why plastic windows in an apartment are leaking, and in order to get rid of condensation on the windows, you need to understand what exactly provoked it. It 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 quite low, the window cannot be heated as needed;
with hot batteries, condensation may occur due to the large protrusion of the window sill, which blocks the access of warm air directly to the glass;
if protective screens are installed on the radiators, they prevent the flow of heated air flows to the bottom of the window;
too humid air in the apartment. This can occur when drying laundry after frequent washing, cooking, etc.;
No good ventilation(does not function or is 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 tide may not be installed correctly - it is simply attached to the window, while it should be placed on the base of the solution;
during installation, the level could be violated and a skew could form, so the leaf gaskets do not fit snugly;
when carrying out repairs - when the wallpaper has just been pasted, the laid tiles emit 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 double-glazed window, from which cold will seep;
the formation of condensate also depends on which fittings, as well as whether its installation meets the rules - whether it allows the doors to be tightly closed or not;
this effect can be caused by poorly performed work on the insulation of external or internal slopes;
the adjustment of the plastic window also affects the fogging of the windows: 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.

Live 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 flowerpots from the windowsill.

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

Usually there are no vents in plastic windows, so you need to open the transom. This is true in the kitchen during cooking, as well as drying washed clothes in the apartment. In the kitchen, it is necessary to install a hood, and it is advisable to cook in pans closed with lids.

It is advisable to constantly keep the windows in micro-ventilation mode by turning the knob 45 degrees and making a gap for air to enter from the outside.
It is necessary to check how efficiently the ventilation in the apartment works - a thin sheet of paper should stick to the grating of the hole. If it does not hold, the ventilation ducts need to be cleaned;
In a single-chamber profile, the distance between the panes of the package is minimal, and there is only one air gap. Due to temperature fluctuations, especially in cold winters, condensation will inevitably form. It is better to choose a two-chamber profile.
If the slopes are not insulated, this must be done. Styrofoam can be used as an external insulation. Cement mortar must be carefully covered with cracks between the window and the opening. Styrofoam is not used for internal slopes. Basalt or glass wool is used here.
Reduce the width of the window sill or move the radiator a little further from the wall. Also, for better access to warm air, it is necessary to equip the window sill with convection grilles or drill holes in it. If decorative grilles are installed on the batteries, it is better to get rid of them.
Check window hardware for wear from time to time as it may need to be adjusted or replaced.
In winter, it is necessary to transfer all windows to the appropriate mode of operation, using the eccentrics at their ends.
You can purchase a dehumidifier. But first, measure the humidity with a hygrometer. Humidity rate for comfortable living in the apartment should be 40-70%.

What to do if the plastic double-glazed window is of poor quality?

When the methods listed above do not help, and you cannot understand why plastic windows are flowing, it means that they are of poor quality. Perhaps a marriage was made during their manufacture, a base profile was used, or all installation conditions were not met. In this case, it will not be possible to eliminate it yourself.

Sometimes glasses fog up inside the bag. This means that it is necessary to remove and replace the seal or even the double-glazed window itself.

Do not think that you can do it yourself - 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 of at least a year, you can turn to them after identifying this problem in winter. They are obliged to eliminate the marriage or defects in the installation. Otherwise, you will have to purchase a new window and pay again for its installation.

Results

Conducting preventive measures or by following these tips, you can prevent condensation from forming on the windows. But if, having tried several methods, you have not achieved this, contact the specialists who installed the windows.

See also: in order to avoid problems, you should choose plastic windows produced according to modern technologies http://e-vikna.com/plastikovye-okna ; quality assurance and affordable prices.

Often on cold days or when it is raining outside the window, and it is warm in our room, we notice condensation on the windows. They cry, not like people, of course, but they also show us droplets on the glass. There are several reasons why plastic windows flow: errors during the installation of a plastic window, high humidity in the room, repair work, obstacles near the window, broken ventilation.

If you find that your window is leaking, then we will help you understand the root causes and advise you on how to deal with it. For many years we lived with wooden frames and had no such problems with them. Good and environmentally friendly windows.

Meanwhile, condensation on the inner glass of a plastic window can be harmful. Accumulating water not only causes inconvenience and annoys the owners, but also spoils the window itself, rubber inserts and breeds dampness and fungus in the apartment, and this, you see, also negatively affects human health.

Violation in window installation technology

The most common reason that plastic windows “cry” is the master’s mistakes during the installation and installation of the structure. Installing plastic windows for yourself is not such a cheap pleasure to pay money to master installers for poor-quality work, and then call others to correct their mistakes.

Consider the situation. The craftsmen installed windows and a plastic door with access to the balcony, received money in their hands and went home. After a while, the residents notice that the frame was installed somehow wrong. She was a little warped to the right and because of this, the whole structure was deformed. The door leading to the balcony jammed, and it stopped opening. And after the rain, water entered the room on the unglazed balcony, forming puddles on the floor.

What to do? The way out of this situation is to contact the company that installed plastic windows for you. You are required to send other craftsmen and once again check the frames for errors during the installation of the double-glazed window. If improper installation is found, workers must cut off the mounting foam and reinstall your windows. It is possible to correct the deformation only in this way and only by qualified specialists.

After installing the construction of a plastic double-glazed window, careful attention must be paid to its decoration both inside and outside the room. All cracks are recommended to be sealed. mounting foam and then treated with sealants for reliability. A special place in the decoration of windows is occupied by slopes. Of course, modern firms immediately offer a simple solution - plastic panels. However, the best solution is the traditional finishing of slopes with plaster.

High humidity in the apartment

Condensation may also appear on your windows - this is high humidity in the rooms.

In particular, the following factors can affect humidity:

If your apartment is located on the north side of the house;
If the apartment in which you live is located on the first floor of the building;
If there is a basement or other source of water and steam under your apartment;
Also, the risk group includes apartments with faulty plumbing, current taps (especially taps with hot water);
If the building where you live has dilapidated pipes that have not been repaired for a long time;
If you dry your laundry right in the apartment, this can also cause the windows to fog up;
Poor ventilation in the bathroom or frequent and long baths (you can not turn the apartment into a sauna);
If you keep fish in a huge aquarium, then this will also contribute to the formation of water droplets on the windows.

It is important to know that plastic double-glazed windows are airtight and prevent air circulation from the room, both to the street and back.

Why plastic windows sweat and what to do (7 ways)

They do not allow water to enter the house, but they also do not allow moisture to evaporate into the external environment, unlike their wooden "brothers", because your old windows had small cracks and cracks through which air circulated.

Plastic windows only accumulate moisture droplets on the inside of the glass. If you are faced with such a problem, then you need to periodically ventilate the room. This will help eliminate window fogging.

Repair work in your apartment

Apartments in a white version, with plastic windows already installed, also accumulate condensate due to repair work. Puttying walls, plastering, wallpapering and other finishing work in the room increase the level of humidity at times. Because of this, moisture settles on the windows.

Preparation of gypsum mixtures and cement mortars also emits a large amount of water into the surrounding area of the apartment. In this case, we can recommend 2-3 airings per day for a duration of 10 minutes.

Obstacles near the window

Here we will talk about curtains and blinds. If they are made of dense fabrics and materials, then this will create certain problems with air circulation in the room and, as a result, the previously mentioned condensate will settle on the windows. Also, the now fashionable wide window sills, which are used as a shelf, table or even a seat, can be attributed to additional obstacles.

Also, indoor plants on the windowsill can create obstacles. In addition, they will evaporate a large amount of water in the room. So advice! Choose fabrics for curtains that are as light and breathable as possible, use the window sill for its intended purpose and limit yourself to 2-3 colors in the room.

Non-working ventilation

In old houses, ventilation is in a deplorable state. If it does not work well, then moisture vapor accumulates in the room, and it settles on plastic double-glazed windows. Especially in this situation, residents on the 1-2 floor suffer. It's not worth putting up with it. Ventilate the apartment more often and bring the ventilation into proper condition with the help of specialists.

These are all reasons for moisture condensation on the glass of plastic windows. You can easily eliminate some reasons on your own, and some with the help of the appropriate services.

Do not think that condensation on the windows is normal, because due to the lack of ventilation and accumulation of moisture in the room, a fungus can form, the spores of which lead to headaches, respiratory diseases, provoke the development of asthma, and so on. Try to get rid of this "weeping" problem.

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 care, 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 their installation, the room turns into a hermetically sealed “jar”, where there is no ventilation that allows fresh air get into the room, and the spent one - to leave it. In addition, water vapor emitted by residents and indoor plants, as well as being a consequence of household activities.

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 most the easy way to get rid of fogging of PVC windows is regular airing of 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.

Window firms are often faced with a phenomenon that is popularly called "windows are crying."

Dew point - the eternal problem of winter condensation (windows "flow", "cry" in the cold, condensation falls abundantly on the windows, on the frames) does not give anyone rest. This problem is especially worrying for those who have not yet installed plastic windows for themselves and are very afraid to face this problem in the future. So whyfog upwindow? Let's figure it out.

Dew point - what is it?

The dew point cannot be adjusted. It is not on windows or in double-glazed windows. It can only be seen on graphs where a thick black line drawn obliquely between the temperature and humidity axes separates two zones: the dry zone and the zone in which condensate begins to fall.

The dew point, however, we encounter daily.We lift the glass lid from the frying pan, on which they sizzle appetizingly. chicken breasts, - water drips from the lid. We step out of the bath, turn to the mirror to look at ourselves clean - oops, the mirror is completely fogged up. We enter a warm store from the street in winter - the glasses instantly fog up. We breathe on the glass to draw a face - the same story. It's all dew point jokes.

The two main factors affecting the formation of condensate (and its subsequent freezing) are - temperature and humidity.

The fact is that in any case, the surface of window panes and the windows themselves is the coldest surface in the apartment, therefore, with high humidity (and it should be no more than 40%), condensate will inevitably fall on the windows and on all those brought in from the street cold items.

The main thing to remember is to clearly understand - that condensation is equally affected by both factors: temperature and humidity. If a cold object is brought into the room from the street, its temperature and room humidity can together lead to the formation of condensation (glasses in the store). If you simply lower the temperature at constant humidity - the same story, condensation will begin right in the air, fog will form on the roads, beloved by all drivers, in lowlands and in areas of reservoirs. If you raise the humidity at a constant temperature, everything will happen in the same way (mirror in the bathroom).

Ways to deal with "weeping windows"

And since two factors (temperature and humidity) influence condensation, then the ways to deal with " weeping windows" - two.

1. Increasing the temperature of the inner surface of the window.

Double glazing preferably single chamber.

Check your batteries. They must be under the windows! And they don't have to be cut off wide window sills, screens and other nonsense that prevents the direct flow of warm air to the glass.

Thick curtains block the access of hot air from the batteries to the windows.The solution to the problem is blinds.

2. Humidity control. It needs to be lowered.

High humidity can never be the result of normal life in an apartment. It's most likely a broken apartment hood. If the house is old - this is most likely. There are stories when, when repairing attic spaces, it was literally necessary to unload perennial deposits of leaves, poplar fluff and dead pigeons from air ducts in bags. If the house is new, it is possible that one of the tenants "successfully" carried out redevelopment and crashed his refrigerator into a fume hood, there were such stories too. Check and repair the hood- this can help and the question is why they fog up window never worry about you again.

Flowers are sources of active release of moisture, which then settles on the glass. However, there is usually no other suitable place for flowers in an apartment - they need light. It is the flowers near the window that can be the last straw in the water-air-thermal balance of the apartment, which leads to the formation of condensate.

Find another place for your flowers.

A circumstance that is hardly noticeable, but very strongly affects the humidity of the air in the room: the consequences of the repair. There are works (wallpaper, plaster, concrete) that are extremely dangerous for the humidity regime of the apartment. Moisture that gets under the wallpaper in the process of sticking it can go out for several weeks, depending on the amount of moisture, the type of glue and the texture of the wallpaper. Moisture after plastering works- and even more. One is multiplied by the other, and if the freshly plastered walls in the apartment are rolled up with thick film-type wallpaper, the room flies out of the normal humidity regime for one and a half to two months. And the worst - concrete works. Fresh concrete screed on the floor, lined with insulation and covered with laminate. It has been a moisture concentrator for several months now.

And all this time the only way to deal with high humidity There will only be ventilation.

If you are convinced that everything is in order with humidity, and with temperature, and with double-glazed windows, and the windows are leaking all the same, then you have discovered some new law of physics. Visit the nearest branch of Sberbank - most likely, a Nobel Prize awaits you :))

And window factories made and continue to make perfectly correct windows, like the correct bees - proper honey. And the first thing a competent expert will get out of his pocket, entering your apartment, is a moisture meter. And if something exceeding 50% is displayed on the scale - it's not about the windows and why the windows fog up - the question is not for them. Windowers won't help you. Although, honestly, we would like more than anything in the world to see this issue - about the fault of the window makers in the appearance of condensate on the windows - removed once and for all.