Condensation on PVC windows: causes and what to do? How to reduce moisture condensation on plastic windows Constant condensation on plastic windows.

The appearance of condensation accumulating on window glass– a problem familiar to owners of PVC windows. With the onset of cold weather, in many residential areas the windows begin to collect moisture, puddles form on the window sills, and dampness begins to be felt in the apartment. This phenomenon worsens the comfort of living, so there is a need to remove fogging from the glass.

The basis of glass fogging is a physical process when, under the influence temperature regime, the liquid changes from one state to another. Warm air contains some moisture in vapor form. When cooling occurs, the liquid changes its state, which causes it to settle on surfaces with low temperatures. Since the window in the apartment is the coldest place, the steam settles there.

When moisture levels are high, condensation on windows can become a serious problem, as fogging dampens the building structure and leads to mold growth. And in winter time, condensation quickly turns into frost.

Dew point concept

The dew point is the temperature value at which cooling steam becomes liquid. This point can be located anywhere in the thermal insulation layer of the wall. The dew point cannot be adjusted. It cannot be seen in double glazing or on windows. It can only exist on a chart. And the main thing that is worth remembering and clearly realizing is that condensation is equally influenced by the temperature factor and humidity. The lower the moisture content in the room, the lower the dew point.

The following factors influence the dew point:

  • ambient temperature;
  • density of wall pie materials;
  • room temperature and humidity;
  • humidity of the external environment.

Danger of condensation

Installing a sealed double-glazed window not only provides comfort and warmth indoors, but also prevents fresh air in the home. For this reason, the owner independently worsens the microclimate of the room.

Condensation on plastic windows is evidence of an unfavorable atmosphere in the apartment. High air humidity contributes to the appearance various types bacteria, mold and fungal formations.

According to SNIP 2.04.05-91, in the living space the temperature should vary within 20-22 °C, and the moisture content should not exceed 30-45%. These conditions are optimal for a person’s comfortable stay in the room and there is no risk of windows fogging up. Therefore, condensation on the windows is the first sign of a violation of the microclimate of the room.

Causes of condensate sedimentation

Fogging occurs due to lack of heating when steam begins to condense on the surface of the window. There are several reasons why there is condensation on windows:

  1. The difference in temperature inside the living space and outside, and the high moisture content of the air inside the room. These causes of condensation on windows are the most noticeable.
  2. Moisture release from low quality finishing materials such as paint or plaster during the process repair work.
  3. Unscrupulous installation of window slopes when the tightness of the structure is broken. The result is a noticeable drop in temperature and fogging of windows. Often this problem occurs when self-installation slopes.
  4. Installation of wide window sills that form obstacles to the entry of warm air from heating system to the window opening. When the ambient temperature is low, condensation collects on the window.
  5. Installation of a double-glazed window with one chamber. Such structures are inferior in thermal insulation properties to their two-chamber analogues.

Condensation and wooden windows

There is no condensation on wooden windows due to the fact that they are able to let air through due to natural material manufacturing. In addition, they are not as airtight as plastic double glazed windows. This ensures that the indoor humidity level is normal.

Modern plastic bags are ultra-tight and restrict air flow. Such parameters block the natural ventilation in the space, which was laid down earlier when designing residential premises.

To maintain natural moisture content, it is necessary to ventilate the room daily. Modern double-glazed windows also provide the option of gentle ventilation. It implies that the air flow between the room and external environment carried out through the air valve.

Prevention of condensate sedimentation

Before you start fighting the problem of window fogging, dampness, mildew and mold in window opening, it is necessary to consider several simple ways to prevent moisture from settling on windows. The appearance of condensation on windows and what to do when it first settles on the glass can be prevented by the following measures:

  • maintaining a comfortable temperature in the living room;
  • ensuring natural ventilation and fresh air flow into the room;
  • insulation of the building from the outside;
  • reduction of indoor moisture content by up to 50%;
  • eliminating all sources of moisture entering the living space: eliminating dampness in the basement area, repairing a leaky roof, etc.;
  • increasing the heating of a double-glazed window by installing a powerful radiator under the window or cutting off the window sill;
  • lack of plants from the windowsill.

Methods for eliminating condensation


You can learn more about the causes of window fogging and methods to combat this phenomenon by watching the video:

Condensation is the most common problem that manufacturers of PVC windows and their consumers have to face. It should be noted that condensation is not only an unpleasant aesthetic defect, but can also cause dampening of building structures and, as a consequence, the appearance of mold!

According to standards, the internal air temperature in premises should not be lower than +18°C; in a number of regions, Territorial Building Codes(TSN), which prescribed the temperature of residential premises not lower than +20°C. If the temperature is below standard, then you need to check the heating system, because this may cause condensation.

Condensation forms primarily at the bottom of the glass unit. Due to convection, cold air accumulates in the lower part between the glasses. Therefore, the bottom and lower corners of the glass unit are the coldest parts of a modern window structure. Since the question of the regional zone arises often, the Gosstroy of the Russian Federation gave an explanation on this problem in letter No. 9-28/200 dated March 21, 2002:

"1. Condensation in the edge zones on the inner surface of double-glazed windows in winter period operation, as a rule, is associated with the presence of an aluminum spacer frame in their design and the convection conditions of the gas-air filling.
International standards (ISO, EN standards) allow temporary formation of condensation on the inner glass of a double-glazed window.
But the standards window blocks do not standardize the formation of condensation, since this phenomenon depends on a set of third-party factors: air humidity in the room, design features junction points of window units, insufficient air convection along the internal glass (due to a wide window sill, improper installation of heating devices), etc.

At the same time, it does not allow condensation to form inside the glass unit, which should be considered a significant defect leading to a decrease in standardized performance characteristics." .

Concerning high air humidity, then this phenomenon is characterized by the following main reasons:

  • Insufficient air exchange due to too much thick windows and, as a result, poor work exhaust ventilation.
  • Increased humidity in building structures due to recently completed construction or renovation work. Building construction retain moisture for one to two years after completion of work!
  • Peculiarities of everyday behavior of residents. For example, a greenhouse on the windowsill or drying baby diapers in the kitchen...

New standards SNiP 23-02-03 "THERMAL PROTECTION OF BUILDINGS" have determined the design parameters of the relative humidity of premises to determine the dew point and temperature requirements on the inner surface of windows:

5.9 ... Relative humidity of internal air to determine the dew point temperature in places of heat-conducting inclusions of enclosing structures, in corners and window slopes, as well as skylights, you should take:
- for premises of residential buildings, hospitals, dispensaries, outpatient clinics, maternity hospitals, boarding homes for the elderly and disabled, comprehensive children's schools, kindergartens, nurseries, kindergartens (plants) and orphanages - 55%, for kitchen premises - 60%, for bathrooms - 65%, for warm basements and underground areas with communications - 75%;
- For warm attics residential buildings - 55%;
- for premises public buildings(except for the above) - 50%.
5.10 Internal surface temperature structural elements glazing of windows of buildings (except for industrial ones) should not be lower than plus 3°C, and opaque elements of windows - not lower than the dew point temperature at the design temperature of the outside air in the cold season, for industrial buildings- not below zero °C.

What other errors can lead to condensation? The premises must be checked for presence of a cold surface!

Causes of cold surfaces may be related to resistance to heat transfer and with ventilation of structures. They may be as follows:

Errors in window manufacturing:

1. A “cold” double-glazed window with low heat transfer resistance was installed, which does not meet the standards.
2. Violation of clearance tolerances, use of a non-standard seal or Not correct installation hinges - the reasons leading to window blowing.
3. In non-opening sashes, drainage holes measuring 5x20 mm are made instead of holes for draining the cavity between the edges of double-glazed windows and the folds of profiles measuring 5x10 or with a diameter of no more than 8 mm. That is, we are talking about a violation of the provisions of clause 5.9.5 and clause 5.9.6 regarding the system of ventilation and drainage holes. We sent out a letter on this topic, and we want to remind you once again: according to GOST, there are drainage systems, and there are ventilation holes. This different types holes! In the letter of the Gosstroy of Russia No. 475 dated September 10, 2002, paragraph 2 states that “if the sashes do not open, the dimensions and location of the holes in the lower profile of the frame should not contribute to overcooling of the lower edge of the glass unit.” Confusion in this issue is often associated with terminology: in GOSTs there is no concept of “fixed” glazing or window, but there is the concept of “non-opening sash”! That is, in the version that in everyday speech we call “a fixed window or glazing” according to the terminology of the standards - “a non-opening sash”!

Installation errors

1. Errors when making an assembly seam: incomplete foaming, which reduces heat transfer resistance; poor protection from external climatic influences, which leads to foam blowing or getting wet; absence or poor vapor barrier, which also leads to the insulation getting wet, but with steam from the side of the room.
2. “Cold bridge”, when, due to improper design of the junction unit, the window ends up in a cold, sometimes even negative temperature zone of the wall. This reason often occurs when heavy condensation appears.
3. Blowing through a wall structure, for example, a brick one, through empty seams - “empty space”. This phenomenon can be encountered in houses of the socialist period - the builders did not fill the vertical seams well. But this has become a problem in new construction as well. multilayer walls, When mineral wool the outside is covered with brick or other cladding. In this case, the insulation must be ventilated, and when the windows are placed in the plane of the insulation, they may be exposed to cold air from the side of the junction. In this case, during installation, it is better to separate the wall from the junction unit with a layer of foamed polyethylene 6-10 mm thick.
4. A wide window sill prevents the convection of warm air from the radiator in the window opening.

Therefore we can give following tips To eliminate the possibility of condensation:

If, after all, condensation is a consequence of increased air humidity, then this cause must be eliminated due to the increased likelihood of mold appearing in the room. To reduce indoor air humidity and move the dew point to an area of ​​higher low temperatures, we recommend installing a Regel-Air climate valve or ventilating the room for 10 minutes twice a day.

Heat losses with such ventilation are insignificant even in winter and amount to no more than 3 degrees.

The intensity of ventilation of the room must be increased during repair work.

The window sill should not be very wide and impede the passage warm air.

To allow warm air to pass through to the window, place the curtains at some distance from the window sill.

Decorative screens on heating radiators should not interfere with the passage of heat flows from the radiators.

It is necessary to periodically check the exhaust ventilation system in your home or apartment.

One of the most effective ways to combat condensation will be the installation of a window with a five-chamber system "Favorite", developed by "THYSSEN POLYMER GmbH" (Germany) specifically for Russia.

The temperature on the inner surface of the profiles directly depends on the heat transfer resistance of the profile system. For example, we can consider two cases - at an external temperature of -26? C and at -31? C (at an internal temperature of +20? C and a relative humidity of 55%). The dew point will be +10.7?C. Temperatures on the surfaces of a standard binding (three chambers and a width of about 60 mm) and a five-chamber binding with a heat transfer resistance of 0.78 m2? C/W will be as follows:

The material was prepared by Sergey Korotkikh,
Fanster LLC.

Any windows in the house, whether modern plastic or “Soviet” wooden, installed in a room, kitchen, balcony or loggia, under certain conditions become covered with condensation (fog up). It is a mistake to think that drops of water running down glass are harmless. If condensation is detected on the windows, you must immediately look for and fix the problem, otherwise the consequences will be disastrous.

The physical essence of the process. Water leaks on the glass do not appear without reason. To understand why windows fog up, let's remember the basics of physics. Air saturated with water vapor is not able to retain moisture, especially at low temperatures (less than +20°C). As a result, excess moisture condenses onto the coolest surface, which most often in a living room is wooden or plastic windows, since one part of the glass is outside, the other is inside.


Moment of dew point appearance

Consequences. Firstly, the microclimate in the room is disturbed: (and for a comfortable stay the humidity should be in the range of 40-60%), which is not better side affects the health of household members.

Secondly, excess water is favorable conditions for the development of mold and other microorganisms that affect wallpaper, tiles, carpets, upholstered furniture, textiles, food. And finally, moisture collects in the cracks of the window sill and frames, reducing the service life of the window structure.

Reasons for fogging of windows in the house

1. Poor air circulation: thick curtains or solid screens covering heating radiators, a wide window sill that prevents normal movement warm air and window heating. As a result, condensation collects on the glass.


A wide window sill is not always good

2. Insufficient ventilation of the room: tightly closed windows, inoperative ventilation shaft, lack of exhaust hood and deflectors.

3. Violation of the temperature regime: turning off the heating (for example, during repairs), insufficient heating of the room.

4. Errors when installing windows: poor-quality sealing or finishing of slopes, completing the structure with non-working fittings.


An incorrectly installed window causes condensation on the glass in winter

5. Presence of sources of high humidity: houseplants and waterlogged soil in pots, aquariums, laundry hung out to dry, leaking pipes, plumbing, balcony roofs, loggia walls.

Ways to get rid of condensation on foggy windows

1. Move indoor plants from window sills to shelves, replace thick curtains, blinds or blinds with light curtains.

2. Replace wide window sills with narrower ones or install special convection grilles.

3. If plastic windows (PVC) fog up, be sure to switch the structure to “winter” mode during the cold season (modern double-glazed windows have this function).


Changing mode on plastic windows

4. Use a hood while cooking, check the ventilation in the kitchen, bathroom and toilet. Good hood almost guarantees the absence of condensation on the windows from the side of the room (inside the apartment).

5. Avoid leaks and “unauthorized” accumulation of water.

6. Buy additional heaters for large and poorly heated rooms.

7. Insulate slopes on windows and balcony sections, treat with sealant (for example, polyurethane foam) joints and cracks, if any.


Insulation and careful sealing of joints solve the problem of condensation on the balcony

8. Check window fittings, if necessary, install new handles and latches. If you are planning to replace the old ones wooden windows for plastic ones, choose double-glazed windows.

9. Foggy windows on the balcony are eliminated natural ventilation and heating. If possible, insulate the balcony inside and outside.

10. Don’t forget to ventilate all rooms in your apartment or house (including balconies and loggias) every day for at least half an hour.

It’s a paradox, but wooden (especially old) windows fog up much less often than their modern counterparts. The thing is that cracked wood, unlike perfectly fitted plastic frames and slopes, it allows air to pass through well.

Traditional methods to get rid of condensation on windows

The proposed remedies can be used as a temporary solution to the problem until the main cause of window fogging is eliminated, when a lot of time is required (several days, and sometimes even weeks).

1. Clean the glass at least a couple of times a month with medical alcohol supplemented with glycerin (20:1 ratio).

2. “Draw” a fine grid on the glass with dry soap. Rub until shiny with a clean, dry cloth (preferably cotton or microfiber).

3. Place a homemade rag bag filled with table salt(you can put a saucer). Kitchen salt perfectly absorbs excess moisture.


Salt absorbs excess moisture - the best temporary solution

4. If the window fogs up from the inside, setting it on fire will help. decorative candle installed on the windowsill. Make sure there are no flammable objects or substances nearby!

Condensation is droplets of moisture that form on the surface of profiles and double-glazed windows, as well as external elements fittings are always unpleasant. However, as soon as you see the first drops on a newly installed window, you should not panic and assume that the fault lies with the specialists who installed the windows in your house or apartment...

Before you figure out why your PVC windows sweat, look at them carefully... And determine where exactly the condensation appears? If there are droplets of water on the inner surface of the glass unit, the problem is most likely due to improper installation and leakage of the glass unit. If condensation occurs on the outer surface of the glass unit, if water flows from it, then there may be many more reasons.

Formation of condensation on the inner surface of the glass unit

The reason - in almost 100% of cases - is a defect in the manufacture of double-glazed windows and during installation (the inadmissibility of moisture inside the chamber is also enshrined in GOST 24866-99). This is good for the apartment owner, if only for the reason that the installation company is obliged to correct the defect. In addition, if condensation inside the double-glazed window is not accompanied by its appearance outside, or if condensation collects on external surfaces in insignificant quantities, the problem can most likely be dealt with one way or another.


Formation of condensation on the outside of the glass unit and on the profile

Possible reasons Moisture condensation on external surfaces is reduced to:

  • improper installation of a PVC window (the window structure is either located too close to the outer plane of the wall, or is located flush with the thermal insulation layer);
  • too high humidity in the room (for example, large condensation appears in actively used small kitchens);
  • lack of ventilation in the house;
  • choosing a glass unit that is too thin and has a low thermal capacity;
  • loose connection of the sashes to the frame.

It is usually not possible to immediately find the reasons why windows sweat from the inside. But there are a number of ways that will definitely help you find a reliable explanation of the source of the problem.

Finding the cause of water protruding on the glass and profile

There are several ways to find out:

  • candle method (bring a lit candle or lighter to the junction of the sashes and frames, to the mounting seams - if the flame begins to fluctuate intensely, depressurization occurs assembly seams or a malfunction in the valve abutment mechanism);
  • using a fan (a switched-on fan placed on the windowsill causes a large amount of water and even a puddle to appear on the windowsill, which means the double-glazed window is not working efficiently enough);
  • consistent improvement of the microclimate in the house (using supply and exhaust ventilation, ventilation, sealing seams or moving radiators further or closer to the wall, reducing the width of the window sill).

As soon as the main factor causing condensation disappears, condensation will not collect.

Prevention: anticipate and avoid

What to do to avoid condensation on plastic windows? The ideal “cure” for fogging is careful selection of the installation contractor - in most cases right choice will protect you both from condensation and from any other problems.

It is worth remembering, however, that even the best PVC window installer will not be able to help you with anything if your house is humid, there is no ventilation, and you insisted that the cheapest double-glazed window be glued into the window, whose thermal insulation capabilities are clearly insufficient.

When preparing for installation - this is especially true if the windows in the house are large - try to take care of ventilation. Active supply and exhaust ventilation is capable of working miracles in these cases. Try not to place a lot of flowers, containers with liquid, aquariums, or humidifiers on the windowsill - all this increases the level of humidity and increases the risk of condensation on the glass unit.

Ventilate the room regularly and use a micro-ventilation system (if it is not installed, order it).

Carefully choose the double-glazed window and the profile from which the frames and sashes will be made - after all, the more effective the thermal insulation of the window opening, the less the risk that the windows will “cry”. Be sure to order not only the installation of windows, but also the finishing of the opening (installation of slopes), as well as the adjustment of fittings.

And finally, try not to carry out installation in the cold season or simultaneously with repairs - above-zero temperature “overboard” according to all GOSTs and SNiPs is prerequisite installation

Briefly: conclusions

Key points to reduce the risk of condensation:

  • correct installation;
  • the presence of good ventilation in the house (even a hood in the kitchen is already good);
  • frequent ventilation;
  • correct choice of glass unit and profile.

Answers on questions

1. PVC windows sweat: what to do?
First, determine where the moisture is located (inside the glass unit or outside). If it’s inside, it’s almost definitely a marriage. If it’s outside, assess whether the humidity level in the house is too high: it definitely needs to be lowered. Check the tightness of the connection of the sashes to the frame and the tightness of the seams at the opening walls.

2. Why do PVC windows produce condensation in positive weather?
As a factor causing fogging, it is not so much the temperature outside that is important, but the difference between what the thermometer shows in the house and “outside”. It is necessary that closed window provided thermal insulation of the room. It is also possible that in the house it is simply high level humidity.

3. Why do double-glazed windows sweat in autumn and winter?
In winter and autumn, they sweat due to the significant difference in temperature indoors and outdoors. If the thermal insulation is poor, the window begins to fog up because cold air from the street and warm air from the room “meet” on its surface.

4. Why do single-chamber double-glazed windows sweat?
Single-chamber packages in most cases are not intended for installation in windows - they perform well in cold glazing of balconies. If installed on a window, one camera is simply not enough to thermally insulate the opening. As a result, condensation forms.

5. Why is there condensation on PVC windows in the morning?
This is due to both the climate and the operating mode. central heating. The fact is that at night the temperature of the batteries is usually the highest - for 5-6 hours room temperature increases significantly. But outside in the morning the temperature is minimal.

6. Why do windows sweat after insulation?
The reasons may be the following: the insulation is carried out so well that the humidity level in the room increases (with poor ventilation moisture has nowhere to go) or the insulation was carried out with errors - moisture accumulates at the points of contact between the profile and the wall in the window opening.

7. Is condensation allowed on double-glazed window?
If the glass unit has no defects and if the window is installed correctly, and the humidity in the house does not exceed 45-50%, it is unacceptable. However, condensation can also appear on a good double-glazed window if the outside temperature is extremely low.

8. How to clean plastic windows if there is condensation on them?
You need to remove condensation - especially if it happens in winter - very carefully, using a cloth made of non-woven fabric that absorbs water well. This will prevent the glass or plastic of the profile from being scratched by pieces of ice that may appear along with condensation.

9. Which metal-plastic windows do not sweat?
They don’t sweat, in principle, just right installed windows PVC, which is regularly opened for ventilation, is located correctly (away from the outer edge of the wall), with unclogged drainage channels and with well-sealed seams.

10. Condensation with a large number of indoor plants.
This is a common phenomenon: plants form their own microclimate, which - if there are a large number of them - begins to influence the microclimate of the house. One of its components is high humidity, which ultimately provokes the appearance of condensation.

11. Condensation due to improper installation.
Very often, condensation is a consequence of improper installation. For example, the location is too close to the outer surface of the wall (to create a wide window sill) or the seams between the frame and the walls of the window opening are poorly sealed.

12. Why do condensation and ice appear on PVC windows?
Ice - a clear sign that the cold has found its way from the street into your home. This could be a crack in the double-glazed window, or a loose fit of the sash to the frame. Or - the double-glazed window is too thin and has few chambers (in severe frost, a single-chamber package may become covered with frost).

13. Who should I contact if plastic windows sweat and freeze?
To the company that installed your windows. In any case, specialists will quickly determine the cause of condensation and select options to eliminate it. There is no need to worry that the contracting company will “blame” its shortcomings on the microclimate of the apartment - a good contractor always cares about its reputation.

Often, residents of apartments with metal-plastic windows are faced with the problem of condensation on the windows. This problem is not too scary, but it is annoying a large number of inconvenience.

Let's look at how exactly you can influence condensation on a window and whether it is possible to avoid it altogether.

Early in the winter morning, we often see a picture: a double-glazed window is covered with condensation, or, more simply, it just fogs up. The reasons for condensation settling on plastic windows are the temperature difference outside the window, inside the double-glazed window and in the apartment (any other room).

The elementary rules of physics say that three main indicators contribute to the appearance of condensation:

  • decrease in air temperature;
  • increase in relative air humidity;
  • decrease in atmospheric pressure.

The last indicator is beyond our control, but we can easily change the first two. Let's explore detailed instructions prevent metal fogging plastic windows.

The cause of condensation on windows does not always lie in atmospheric conditions. Perhaps the manufacturers violated the technology when manufacturing the metal-plastic window, or the installers did their job poorly.

How to get rid of condensation on plastic windows?

Solving temperature problems

The most in a simple way To prevent condensation from appearing on the window is to increase indoor temperatures. Turning on heating devices and after warming up the room, you change the “dew point” indicator. A warm double-glazed window takes much longer to cool down, and with constant heating, the window does not cool down at all. Under such conditions, condensation will not appear on the window.

Sometimes simply heating the room is not enough to combat condensation. If a metal-plastic window was installed without proper insulation of the window sill and walls, then heating the room is simply pointless. Cold air will easily penetrate around the plastic window, cooling the frame and glass unit, causing condensation.

When installing a metal-plastic window, check with the installer whether they insulate the slopes and walls around the window, because often workers only cover them with seemingly attractive empty plastic. If this procedure was not performed during installation, it can be easily performed after installing the window.

Quite often, people are perplexed as to why windows fog up, because the window is properly insulated and the air temperature in the room is high. The reason may be a wide window sill. Its design blocks the flow of warm air from radiators located under the windows. The solution would be to purchase a thermal curtain, which should be installed on a plastic window in the cold season.

In very cold regions, it is sometimes difficult to warm up the air temperature in the room to match the minus temperature outside the window. The way out of this situation is to install metal-plastic windows with two or three double-glazed windows. The air contained in the chambers of the glass unit will not allow the window to freeze and will prevent the appearance of condensation.

High air humidity: where did it come from and how to deal with it?

Often, high humidity in the room leads to the appearance of condensation on a metal-plastic window. It may grow due to the following conditions:

  • poor exhaust hood in the room;
  • the air in the room does not circulate well;
  • location of the apartment on the first floor next to the basement;
  • location of the apartment near the roof.

To get rid of dampness, you need to ventilate the room 3-4 times a day for at least 20 minutes.

It is best to insulate and properly treat the walls adjacent to the source of moisture.

Please note that apartments in new buildings often suffer from excessive air humidity. This is due to the evaporation of moisture from finishing and building materials. If possible, ventilate the room as often as possible, and on dry, hot days, leave the windows open all day long so that the moisture evaporates as quickly as possible.

Difficulties with installing a metal-plastic window

If errors were made during the manufacture or installation of a metal-plastic window, then no matter what you do, you will not be able to get rid of condensation on the windows on your own. In this case, you need to contact the service where you purchased the windows and demand immediate replacement of the window with qualified installation.

The wettest rooms

In rooms with high humidity, for example, in the kitchen it will not be sufficient to comply with the above conditions to reduce condensation by metal-plastic windows. In such rooms it is recommended to artificially improve air circulation. This can be done, for example, by installing a fan on the ceiling.

You also need to check periodically ventilation systems in these rooms. It is advisable to purchase special devices that will dry the air in damp rooms.

Compliance with all the rules described above will help you reduce the appearance of condensation on the windows, or even get rid of it altogether. These rules must become the norm so that the problem of window fogging is solved forever. If you are unable to eliminate the cause of condensation on your own, contact the company where you purchased the plastic windows; perhaps the problem was caused during the manufacture or installation of the metal-plastic window.