Additional insulation of plastic windows. How to insulate plastic windows: slopes, window sill

Insulating windows for the winter is an unchanging ritual that is carried out by owners of wooden frames before the onset of cold weather, which allows you to increase the room temperature by 5-10 degrees and reduce heating losses. There are many ways to insulate windows for the winter, both using special seals and sealants, and using improvised means available back in the days of our great-grandmothers.

Principles of window insulation

The point of insulation is to create the most airtight internal air space between the frames. As you know, air is an excellent heat insulator, provided that it is enclosed in a confined space. This space is the distance between the outer and inner frame. It turns out that in order to insulate the windows, it is necessary to eliminate the cracks that allow cold air flows from the street to penetrate.

When insulating wooden frames, three methods are usually used: using rubber bands, sealing the gaps between the frames and gluing them with strips of paper, tape or fabric. At the same time, it is not recommended to seal the outer frame with vapor-proof tape - this will lead to strong fogging and, in cold weather, to freezing. Internal frames, on the contrary, are best sealed to prevent moisture from penetrating into the space between the frames.

It is advisable to lay an adsorbent - silica gel - between the frames, Activated carbon, soda or salt. To prevent them from spoiling the appearance of the windows, they are placed in small bags of white paper. However, in a city apartment with normal humidity you can do without an adsorbent. If the humidity is high, it is better to donate appearance windows: moisture, condensing on the glass, flows onto wooden frames, as a result of which the paint peels off and the frames begin to rot.

Before you begin insulating the windows and frames, you need to wash and wipe dry, check for large cracks, as well as the tightness of the glass. Poorly secured glass not only allows cold air to pass through, but also rattles in the wind. If necessary, the glass can be strengthened; how to do this is described below.

Glass repair and sealing

It happens that even insulated frames do not protect the apartment from drafts, and most often the problem lies in poorly secured glass. Previously, glass was placed in frames on window putty, which looked like dirty gray frozen plasticine. Over time, due to changes in temperature and humidity, the putty begins to dry out and crumble, and after a few years or decades there is none left at all. At the same time, the glass begins to rattle, and large gaps appear between them and the frame. Will help correct the situation silicone sealant.

Repair and insulation technology:

Assess the condition of the glazing beads - the slats that hold the glass in the frame. If they are rotten, wobbly and crumble, it is better to immediately buy new ones in the required quantity.
Carefully pry up the glazing beads and pull them out along with the nails. Take out the glass.
Clean the frame from any remnants of old putty and excess paint in the area where the glass is installed.
Remove any remaining putty from the glass using an alkaline solution such as soda ash. It is not recommended to scrape the glass with a knife; this will leave scratches that cannot be removed.
The frames are wiped dry and coated around the perimeter with transparent silicone sealant, after which the glass is installed.
The glazing beads are nailed into place using window nails. This must be done very carefully, trying not to squeeze the glass, otherwise it will crack if the temperature changes.
The remaining cracks are also coated with sealant, removing excess with a damp cloth. Allow it to dry for 2-4 hours. After this, the windows are wiped using a window cleaner and the insulation of the frames begins.

Materials for insulating windows are sold in hardware stores; they are a narrow sealing tape with an adhesive layer of foam rubber or soft polymer. Sealing tapes made of polymer materials can be used for several years, while you can open windows and wash them without removing the tape. Foam insulation gets wet when exposed to water, so it is best to remove it annually.

How to glue sealing tape? This process is very simple: a seal is glued around the perimeter of the open window sash using an adhesive layer applied to it, after which the frames are carefully closed with latches. This is done with both external and internal frames; if there are large gaps, the windows can be additionally glued from the inside masking tape- It is also sold in hardware stores.

Insulation of windows with large gaps

If the frames are too old or severely warped, they may have huge gaps that cannot be sealed with sealing tape. In this case, you will have to caulk the cracks with cotton wool, foam rubber, rags or paper, or putty them with special mixtures. This is done like this:

Insulating windows using putty

A more radical method that allows you to qualitatively insulate not only windows, but also cracks in window sills, is to use building mixtures. For this purpose, you can use adhesive-based putties, a solution of alabaster mixed with chalk in a 1:1 ratio, as well as window sealants.

The selected mixture is applied into the cracks using a metal spatula, leveled and left until completely dry. It should be remembered that removing such putties can lead to paint peeling, so this method must be used carefully. However, it is very effective for old frames that are soon to be replaced - insulate them with sealing tape often impossible, and putties and alabaster mortar perfectly seal the space between the frames.

You can also use moisture-resistant sealants for exterior use, but choose white or colorless ones. The sealant is applied directly from the tube, covering all the cracks, as well as the joints of the glass and frame.

Cardinal method of window insulation

If you don't plan to ever open the window, you can use polyurethane foam. They fill the cracks with it, wait until it expands and hardens, and then cut off the excess with a sharp knife. To avoid yellowing and destruction of the foam, it is coated with ordinary white enamel for exterior use.

In practice, this method is used extremely rarely, and polyurethane foam is usually used for insulation window box, filling in the gaps between her and the walls. This operation is performed at the window installation stage, but if you think that heat loss occurs precisely for this reason, you can open the window sill, window slopes and low tides and foam the window frame.

Video - how to insulate wooden windows for the winter?

Warm home guarantee cozy atmosphere and comfort of living for all family members. To make our home warmer, we use energy-saving technologies, make heated floors, use alternative sources heat.
An important factor is not only the accumulation of heat during the cold season, but also its preservation. Experts, not without reason, believe that about 40% of heat escapes through our windows.

It's no secret that panoramic glazing, big windows to the floor is one of the main causes of heat loss. Plastic and wooden windows also need insulation, thanks to which in winter you can significantly save on heating.

Insulate plastic windows for the winter with your own hands

Plastic windows that have been in use for a long time also need insulation in winter.
If the window has served you for a long time and the cold began to let in the first season, then you need to adjust locking mechanism and change the insulation. Frost, condensation or frost inside the frame may indicate depressurization of the window.

1. Replacing the plastic window seal

You can replace the plastic window seal yourself. It is better to buy a “native” seal. If you can’t buy one, you can consult with the seller at a hardware store. To select the appropriate seal, just take a small piece of the old one with you.
It is better if the rubber seal is black. It doesn't show much street dust.

First you need to remove the handle of the sash so as not to damage it. Lay the sash inside(where the handle is) down. Next, you need to remove the old insulation by prying it off with a knife, clean and degrease the groove. After the insulation is laid around the perimeter of the window, you need to cut the sealing profile 0.25-0.5 cm longer than the perimeter. This remainder of the seal must be pressed into the groove. The seal on the frame is also replaced.

After this, the sash is installed in place. The sash is placed on the lower hinge from top to bottom, then the parts of the upper hinge are connected away from you, the pin, lock washer and hinge cover are installed. We close the sash with a lock and check the quality of the work performed by testing the joint for drafts.

It is advisable to clean and wipe the seal 1-2 times a year. The seal should be wiped with a dry cloth to remove accumulated dirt. Then it is better to degrease the seal for the plastic window soap solution and apply silicone grease. Such preventive work will protect the seal from high temperatures in the summer and will allow it to retain its qualities longer in the cold.

2. Adjusting plastic window fittings

Over time, plastic window locks require adjustment. The fixed part of the lock is located on the frame. The main indicator for adjusting locks is the bolt head recessed into the structure, which has a groove for a hex key. This is an adjusting bolt that changes the position of the wedge behind which the locking “tongue” of the lock fits. Adjusting this wedge changes the tightness of the sash to the frame in the closed position. IN summer period The closure density can be weakened, but in winter, on the contrary, the density should be increased as much as possible. To adjust the lock of a plastic window, use a hex key.

3. Insulation of slopes and window sills.

It’s good if, when installing a plastic window, PVC slopes and window sills were installed at the same time. If you can hear a draft through a plastic window, you need to take care of insulating the slopes and window sills. Large cracks can be filled with tow or foam rubber. You can choose to fill the top of the crack with polyurethane foam or alabaster. Then finish treating the cracks with sealant.

We insulate wooden windows for the winter with our own hands

4. In order to eliminate drafts in the house, you need to place pieces of paper, which are previously moistened and twisted into a bundle. On top of such insulation, paper is usually used to increase the tightness. Disadvantage this method is that after the cold weather, dried paper will need to be removed from the frames, and the frames themselves will need to be repainted.

5. The next method of insulating wooden ones is to place cotton wool and pieces of foam rubber. You can stick strips of unnecessary fabric 5 cm wide on top. Before using such fabric strips, they need to be wetted, wrung out and soaped with soap. Compared to paper, the fabric will not turn yellow and can be easily removed in the spring.

Important: the foam seal absorbs moisture, so it must be replaced annually.

6. Insulation of window slits using paraffin. First, the paraffin must be melted to a temperature of 70 degrees. Then, using a heated syringe, paraffin is injected into the cracks.

7. Insulation using tubular profiles. Such profiles are sometimes called gaskets. Such insulation is made for large and small cracks. The advantage of the insulation is that it is invisible, as it is glued to one side of the frame. Service life up to at least 5 years. The peculiarity of these profiles is that you need to start insulating the window before the onset of severe cold weather. Since such profiles can be installed at a temperature not lower than 10 degrees. Seals from PVC is better tolerate frosts. When choosing rubber seals, it is better to give preference to softer ones.

8. Another modern and convenient way insulate wooden windows heat-saving film. Peculiarity of this material is that it has two sides, simple and with metal coating. Due to this, he misses Sun rays through itself, but does not transmit infrared radiation back. This explains its heat-saving effect. The material is glued to both glass and frames. If executed correctly, it will be almost invisible to the eye, and the room will immediately become significantly warmer.

Window insulation using Swedish technology

The patented name of this EuroStrip technology. In some countries it is also called Canadian technology.

Insulation of windows according to Swedish technology good because it allows you to save environmentally friendly wooden windows, providing them with long years good tightness. This technology is also good because it allows you to significantly reduce street noise and reduce the penetration of dirt and dust between the doors to almost zero. The cost of insulating windows using Swedish technology is tens of times lower than the cost of installing new ones plastic windows

The material for sealing using this technology is made of wear-resistant and durable rubber, which contains natural rubber. The material is also not exposed to water and is able to maintain its heat-saving properties in the temperature range from -53°C to +128°C. That is, in any weather conditions, Swedish insulation will protect the house from drafts. Of particular note is the heat savings in the apartment. After the work is completed, the temperature in the house increases by an average of 3-5°C. A specially made wide profile provides protection from rain, wind, noise and dust. Aesthetically, the window retains its original appearance. When the doors are closed, the insulation is not even visible.

High-quality insulation of windows using Swedish technology is carried out in stages, in compliance with all technological requirements.

Insulation process wooden windows using Swedish technology:
1) First you need to thoroughly wash the windows.
2) Check the valves. Do they close tightly and do all mechanisms work?
3) Remove the doors from their hinges.
4) Excess layers are sanded off the sashes old paint that interfere with closing and opening.
5) Use a cutter to create grooves along the entire contour of the sashes.
6) A special high-quality seal is rolled into the grooves 7) To reduce the penetration of dust and dirt, the window sashes are insulated between each other and inside.
8) The sashes are put in place, and the fittings are replaced.
9) The sashes are checked and correct work wooden window fittings.

Experts who deal with window insulation say that such insulation work is best left to professionals. Since carrying out work on window insulation using Swedish technology requires special skills and appropriate tools. Using a cutter when rolling the seal into the groove ensures that the seal will not peel off or fall out over time.

Alternative methods of insulation

Heat leaves the house through dirty windows. Do you want to make your home warmer? clean all the windows before the onset of cold weather. It has been proven that a window, if it becomes dirty and loses transparency in the visible part of the spectrum, increases transparency in the infrared spectrum. And heat leaves the house due to drafts and escaping infrared radiation. It is best to wash windows using ethyl or ammonia. This will clear grease accumulations on the kitchen windows and avoid streaks on the glass.

Use wool blinds. Conventional slats are wrapped in strips of wool and fabric. Such blinds provide good protection from the cold.

Electric window heating. It involves installing a special heating coil on the windows, which provides heating. This heating method should be provided at the stage of window installation.

Reasons for poor window insulation

At this stage, the cause of the draft should be determined.

The fittings are not working properly.
The sealing rubber bands of the sash and frame have dried out or do not press tightly.
The beads do not hold the glass tightly and do not press it.
It blows from under external ebbs, window sills or internal slopes.
The window opening was not well foamed and thermally insulated during installation.

Adjusting fittings

First, we determine the density of the window sash. This is done using a regular notebook sheet. We clamp the sheet with the window sash and close it tightly with the handle. Now we are trying to pull it out, if the sheet does not come out, or it comes out hard, in this case there is no need to worry, the sash has an excellent rebate. If the sheet comes out easily when the sash is closed, then we proceed to eliminate it. We open the sash and on the locks located on the sash fittings, use the adjusting key to set the winter position, turning it 90 degrees. This will ensure a tight seal. And again we return to our sheet.

Replacing rubber seals

If the leaf comes out easily again, then it's all about sealing rubber sashes and frames. Over time they dried out and lost their elasticity. Needs replacement. We cut out a small piece from the sash, also from the frame (they are different in volume), and go to the nearest retail supermarket chain furniture fittings, to the market or contact installers. You need to measure how many meters of both seals you need.

Loose fit of glazing beads

Finding and replacing glazing beads is a rather tedious task; it is better to turn to specialists. Well, if you want, eliminate the draft, without replacing and on our own, then carefully remove the glazing beads from the landing grooves. This must be done using a special spatula, with short and sharp blows, at an angle of 45 degrees along the body of the bead. Be sure to hold the glass: with your hand, with your head, and ask your neighbor so that the glass does not fall out of the sash when removing the glazing beads. We load a bottle of sealant into a piston gun and fill the space between the glass and the sash, along the perimeter of the sash (frame, if the window is blind, without a sash). Using a rubber hammer, hammer the glazing beads into the grooves of the sash. You need to start with short beads and from the corner of the sash. Now there will never be any blowing in this place, even if the glass is not pressed tightly.

Blows from the street side from under the tides, cornice

At poor quality installation external flashings and cornice, between them and the wall opening there remain unfilled cavities in which, when correct installation, there must be heat-insulating material. It provides good thermal and noise insulation of the house. To eliminate this problem, you need to open the sash and carefully examine the places where the metal ebbs and cornices adhere to the wall.

If you find gaps, cracks, or voids, you need to fill them with polyurethane foam. To do this, we definitely need insurance. And by leaning half a length out of the window, you can easily reach places that are not filled with thermal insulation.

If your windows are not standard (stained glass, balconies, loggias), do not take risks! Contact the specialists.

Excess dried foam can be cut off after a few hours. When it is not possible to turn to specialists due to a banal absence extra money, and at the same time there is no desire to be exposed to drafts, we abandon this idea until better times and carry out insulation from the inside.

Insulating the window opening under the window sill

If you find that the space between the cornice and the wall opening is not filled with foam, but with outside there is no way to fill it. Then we do it from the inside. Under the window sill there should be a distance to the opening of about 2 centimeters, filled heat-insulating material. Using a screwdriver, knife or stiff wire, remove the foam to gain access to the unfilled voids under the street cornice. It is not necessary to select all the foam; you need to select enough to stick the nozzle of the gun through to evenly fill the voids under the eaves. We load the cornice so that the foam does not lift it.

We insure the cargo against accidental loss (there may be people below!)

We seal the joint between the window sill and the frame with silicone sealant from the inside and outside, and remove the excess with a wet rag.

Thermal insulation of a window opening

One of the reasons for drafts is insufficiently filled voids between the window (wall) opening and the window frame. Therefore, we look through it for the presence of insulation and check for the absence of drafts. You can check it using the flame of a lighter (candle), or with the palm of your hand.

To be completely sure, in the absence of a draft, you can ask someone to open and close the door to the room. While you smoothly carry along the window opening open flame lighters (palm). Air draft will definitely make itself felt if there are gaps in the opening.

After eliminating drafts, for more effective insulation and heat preservation applied energy saving film. The film is self-adhesive and to install it you need to remove the glass from the window. Remove dust and dirt, moisten the glass surface with soapy water. Apply the film, spreading it evenly. Rubber spatula squeeze out the remaining solution. Trim off excess film stationery knife along the edges of the glass. Carefully insert into the frame (sash), hammer in the glazing beads with a rubber hammer.

With these practical advice, you can easily insulate your windows.

A draft represents the flow of air created in a room, coming from the street through open doors, windows, cracks in them. In summer a draft brings real help, in the autumn-winter season - leads to heat loss, as a result, despite heating, we freeze, and bills charged for heat delivery rise.

A common cause of drafts is leaky, improperly adjusted windows. Due to cracks in window frames, 20-30% of heat is lost. How to insulate plastic windows for the winter with your own hands and prevent drafts? This will be discussed in this article.

Start heating season – last call when you need to make sure that the window frames are sufficiently sealed, prepared for winter, and cold air does not penetrate into the room. How to do it?

Simple ways check for cracks:

run your hand along the edges of the glass, door jambs, the flow of cold air is immediately felt by the palm;
bring a lit candle and follow the flame.

You should pay attention to the condition of fittings and hinges. If you feel a cool breeze on your palm, you need to carry out small renovation work.

How to properly insulate old windows for the winter?

After 10-15 years, PVC windows become insufficiently energy efficient. If the frames, profiles are in good condition, they need to be thermostatically controlled. With the cold weather approaching, many are wondering how to insulate plastic Euro-windows with their own hands.

To save on heating costs, it is often recommended to replace old frames. This is not always necessary. There are methods to improve thermal insulation window openings cost effective. What is better to use?

Isolation stages

Upgrading window units usually includes replacing the glazing unit, replacing gaskets, repairing or replacing fixtures, and repairing plaster. You can do some or just one of these steps. The optimal effect is achieved through next works:

How to adjust plastic windows?

Adjusting the Euro-window and installing it in the correct mode effectively eliminates the problem of uncontrolled breakthroughs of air masses inside and helps reduce heating costs.

What you will need:

screwdriver;
original keys to adjust the window (can be replaced with a regular hex wrench of a suitable size).

Checking the position of the sash relative to window frame

The setup begins with checking the position of the sash, stages of work:

Outline the window in the corner with a pencil.
Open the sash to check the distance between the closed sash and the frame. It should overlap correctly.
The sash adjustment screws are located on the upper and lower hinges of the window. Screws allow you to adjust it vertically and horizontally (from right to left). After tightening the screw using a hex key, install the sash so that it overlaps the frame by a few millimeters.

The degree of fit of the sash to the frame

Check the degree of fit of the sash as follows:

Insert a piece of paper between the sash and the frame.
Close the window.
Try to remove the paper - if the paper comes out easily, you need to increase the seal.

To improve the fit, the eccentric screws on the window fittings must be replaced or adjusted. They usually have small “dots” on them - markers that show the direction of the screws. By unscrewing the locking screws relative to the gasket, you can change the degree of fit:

increase (the point faces the “exit”)
reduce (the point must be indoors).

The adjustment will allow the sash to fit more tightly to the frame, increasing the tightness of the Eurowindow structure. Once adjusted, closing the window can become a more labor-intensive process. If you don’t want to make the adjustment yourself, you can use the services of professionals.

Checking the condition of the gaskets

The condition of the gaskets affects the breathability of window frames; it is important to take care of them by lubricating them with appropriate products:

silicone grease,
technical Vaseline.

The lubricant will preserve the properties of the Eurowindow for a long time. However, if the gaskets are deformed, cracked, or “extend” beyond the frame, they must be replaced with new ones. The gasket is cut into suitable pieces and carefully glued. Can be used:

self-adhesive gaskets,
rubber seals.

It is important to replace the gaskets before frost sets in!

Before sealing window frames, you should thoroughly clean the frames with a special product for caring for window frames.

Checking the fittings

Fittings – key element window frame, although at first glance it is not very noticeable. Worth checking before winter technical condition fittings:

if they “sit” too loosely, they should be tightened;
Lubricant may be required (Vaseline works great).

Gaps between frame and glass, trim and wall

Heat also escapes through such gaps; it is necessary to eliminate all gaps. There are several options to solve the problem.

Thermoresistant paper

A popular option is shrink film for insulation. PVC windows. The film is attached using double-sided adhesive tape directly to the window frames. Films form an additional layer on the glass, increasing the thermal insulation coefficient. Self-adhesive thermal insulation films with low-emissivity coatings are popular, give an excellent effect, and do not require additional processing.

Films allow you to create an additional layer of air, increasing the thermal insulation of the glass unit:

Thermal film - inexpensive, efficient material. The film is installed inside and outside. The film mounted inside is more stable and is not exposed to gusts of wind or adverse atmospheric factors.

After stretching with warm air from a regular hair dryer, the film becomes transparent and does not distort the image. During the heating season, when insulation of double-glazed windows is not required, the film can be removed.

Window insulation - video

When compacting, you must be careful not to overdo it. It is important to provide micro-ventilation, in which a small amount of fresh air enters the premises. Microventilation is important for:

operation gas system,
reducing humidity levels,
Fresh air improves our mood.

“Closing it in a jar” too tightly is a bad idea.

Old windows sometimes cause trouble by letting drafts inside. There are several options for how to seal windows for the winter at home. The choice of insulation option for window openings depends on their condition and budget.

Of course, first of all, you need to remember that the period of perfect operation can be extended if you carefully handle the windows and carry out the necessary maintenance.

Among other things, you need to remember that the rubber gasket around the perimeter of the window lasts much longer if it is periodically lubricated. Repairs should best be carried out early, when the need for it becomes clear.

When using certain insulating compositions, a strictly defined temperature regime. Also, it would not be a bad idea to choose a dry and windless day for repairs if possible.

You can do the work of filling gaps yourself. In case of carrying out external work independently, it is recommended to work only on the first two floors.

If your apartment is located higher, then you need to contact a specialist. It is also not recommended to act independently when adjusting windows or replacing their parts. Of course, with enough experience and appropriate skills, it is quite possible to handle it yourself, but a professional will do the job efficiently and with a guarantee.

Methods of carrying out work to improve thermal insulation

Let us immediately note that such works can be divided into two large groups:

Related to the repair of plastic windows and closing existing cracks.
Various additional measures.

The second section may include the following types works:

Wool blinds. If used, their strips can be wrapped woolen fabric. This will greatly help keep you warm.
Heat-saving film. WITH inside a special film is attached using double sided tape. We can talk about either a separate sash or an entire window. Then, the film is heated over the entire surface warm air from a hair dryer. The film tightly envelops the entire structure, providing high-quality thermal insulation.
Using an electric heater. This is a small square box that is installed directly on the glass. Sometimes this is done during installation, and sometimes during operation. We are talking about using a special electrical appliance that is made specifically for this method applications.
Use of curtains.

We must remember that if there are problems with heat conservation, then it may be necessary to insulate the joints of the window and walls or window sill. The plastic window itself does not need to be sealed. It needs to be adjusted and as a result it is able to completely restore its thermal insulating properties.

Where to begin?

Sealing seams is the easiest way to prevent blowing

If you feel that heat is leaking in, then first of all, you need to find out the reason. If we are talking about open cracks, then the easiest way is to check if there is air movement.

One common way to do this is to use a lighter. The deflection of the flame will show where the air movement is occurring. You can also move your hand to feel where the air is moving.

But the latter method has less sensitivity. Further actions depend on what kind of leakage occurs.

Let's look at the different possible options:

The gap under the window sill. Sometimes, when insufficient attention is paid to its junction with the wall below. As a result, there may even be a through gap. In this case, it needs to be sealed. Another situation is possible here. The gap may not be visible from the outside. In this case, holes are drilled between the frame and the window sill through which the gap can be filled insulating material. Then, the joint along its entire length is covered with white opaque tape.
The gap between the window and the slopes. Similar methods apply in this situation. But when repairing slopes, aesthetic requirements are much higher than in the previous case.
Repair of external tides. If it is necessary to correct the situation on external ebb tides, then special “warm mixtures” are used for this purpose. They are a special primer. Water-repellent paint is also used for this purpose.

After foaming all seams, the foam is removed and protected using various materials

For the first two options, it is possible to use various placeholders:

Polyurethane foam. It is easy to use, it hardens well, but is also sensitive to temperature changes. The latter feature can lead to destruction of the filling.
Silicone sealant. It is relatively inexpensive and yet easy to use.
Mineral wool. Has good thermal insulation properties.
Use of polystyrene foam represents the cheapest, but also the least durable and durable solution to the problem.

In the above situations general order doing the job is quite similar:

Clearing the place, where filling will be done, from debris and remnants of old polyurethane foam.
We wash the surface and, if possible, degrease the working surface.
We fill the detected gaps with the filler we have chosen. (polyurethane foam, silicone sealant, mineral wool or polystyrene).
If necessary, seal the holes(if available) with construction tape.

Additional adjustment and replacement of seals

The main reason for increased heat loss is wear of rubber seals

If no cracks were found, then it may make sense to adjust the windows. To do this, you need to check the quality of the rubber gaskets. If this is necessary, then they need to be replaced.

In some cases, gaskets may have nothing to do with it. Plastic windows have special adjustment screws that allow fine adjustments.

They are present in the frame on all four sides. Air leakage may be due to the fact that there has been a slight shift relative to the window frame. For this type of work, it is best to invite a professional.

Also, accidental damage cannot be ruled out, which creates the need to replace certain parts of their delicate mechanism. Only a professional can do this efficiently.

One of the most common reasons for the seal failure of plastic windows is the need to replace both seals. One of them is located at the very glass block. The other is on the frame.

The work is carried out in the following order:

The window is removed from its hinges. The old seal is removed.
The groove is wiped from dust and dirt and degrease.
Then carefully insert the new seal with the desired edge, prepared in advance.
Then perform similar operations for the seal, which is located on the window frame.
Paste earlier removed window on the hinges.

It must be remembered that if you constantly take care of the seal, this will significantly extend its service life.

This is done as follows:

They are cleaned of dust and dirt and washed carefully.
Wipe dry.
Lubricate with special silicone putty (it is sold in car dealerships).

These procedures protect the seals from drying out in hot weather and from becoming stiff in severe frosts.

Repair costs

Let's give approximate prices.

Call a technician to inspect the windows, assessing the situation and drawing up an estimate - approximately 500 rubles for each window.
Minimum possible cost of work- 2000 rubles.
Adjusting the clamps- 400 rubles for each.
Replacing the seal- 130 rubles per linear meter.
Window hardware maintenance(disassembly, lubrication, etc.) - 800 rubles.

When carrying out the work yourself, the prices are as follows:

The price for the seal is 50-55 rubles per linear meter.
Silicone sealant 280 ml will cost 50-160 rubles, depending on the brand.
Polyurethane foam 500 ml can cost about 150 rubles.
costs 340-550 rubles square meter heat-saving film for plastic windows.

Insulation of plastic windows- quite a difficult matter. At independent work You can save a lot on your costs. But to do this you need to have a good understanding of how to do it. If you don’t want to waste your energy on this, then it’s worth investing in a specialist who will do the job efficiently and reliably.