Insulated plastic slopes for pvc windows. How to insulate plastic windows at home

It is good if specialists are engaged in installation and insulation. In the case of involving persons from friendly republics in the repair, the entire process will have to be controlled, which means that it is necessary to have an idea about the materials used and the very technology of their application.

How and what is the insulation of slopes of plastic windows from the inside

Even country house used only in summer period- need to be warmed up. We spent money on new double-glazed windows, which means that it makes sense to make their service life as long as possible.

No finish:

  • Spoils appearance premises;
  • Leads to the destruction of the mounting foam, which holds the frame in the opening;
  • Contributes to the appearance of cracks, drafts, leaks and distortions of the frame.

As a slope insulation for plastic windows are used the following materials: mineral wool, polyfoam, extruded polystyrene foam. All of these materials have excellent heat and sound insulating properties, cost-effectiveness and are quite easy to install. The only drawback is the need for further finishing: priming, plastering, puttying and painting, and as a result, the time spent on drying each individual layer of mortar.

Do not want to wait a long time for the result? Then it is possible to get insulated slopes for plastic windows inside the house much faster, using sandwich panels as a facing material. Their peculiarity is that no additional finishing is required, and the house will be reliably protected from dampness, drafts and mold.

Sandwich panels are a three-layer plate. Inside there is a layer of extruded polystyrene foam, covered on both sides with a layer of durable plastic.

Such a heater allows you to make slopes for plastic windows inside and outside the room, window openings in this case will be finished in the same style and color.

PVC slopes are produced not only in the classic white color, there is a wide selection of laminated colored panels on sale. Pick them up to match any plastic or wooden frames it won't be difficult at all. And it will take much less time to finish the internal openings than if you were insulating the slopes of the windows with polystyrene foam or mineral wool.

Thanks to the advent of modern building materials, which differ in their positive characteristics, it has become fashionable among the owners of apartments with old windows to change them to more advanced ones - plastic ones. But, installing a new window is only the beginning of a process that should end with the finishing of the slopes.

But, it may also happen that after replacing the window in the apartment it became cold and damp. The reason for this may be the gaps around window frame. In this case, only slope insulation will help. Of course, if it allows you family budget, you can invite experienced professionals who know how to properly insulate the slopes of plastic windows. But, in order to save money, we will tell you how to insulate the slopes on the windows with your own hands.

Why worry about the insulation of the slopes of plastic windows?

Immediately I want to emphasize that thermal insulation is an integral part of a well-installed window profile. The main reasons that require insulating the slope:

  1. The window has a frame that does not fit tightly enough to the slope, resulting in a seam. To fill it, polyurethane foam is used. Yes, this material retains heat well in the house, but is afraid of moisture and sudden changes in temperature that destroy it. That is why you need to hide it under the finishing materials.
  2. Since the window profile is not sufficiently protected from external influences, water (precipitation, condensate) can penetrate into the joints without insulation. In winter, at low temperatures, the fasteners will begin to collapse, as a result of which the window will sag.
  3. As a result of shrinkage of the window profile, voids may appear through which not only moisture, but also cold air will penetrate into the house.
  4. If the PVC window is not insulated, with inside Condensation can accumulate, causing fungus and mold to appear. If the slopes are insulated, the likelihood of this can be minimized.

In addition to the fact that it is necessary to insulate the slopes for their proper functionality, it is also necessary to complete their appearance.

What material to give preference?

So that the installation of a plastic window does not violate the microclimate of the apartment, you need to pay special attention not only to the insulation of the slopes, but also to choose the right material for this. Today on construction market very big choice insulation materials Here are the most popular ones:

  • Styrofoam. This is the cheapest insulation that does not cause any particular difficulties during operation. But, from temperature changes, it is subject to destruction and changes in characteristics.

  • Mineral wool. This insulation material can be used both inside and outside. Distinctive feature– low level of flammability.
  • Penoplex (extruded polystyrene foam). The most suitable material in terms of characteristics, but not as affordable as foam sheets.

In addition to these options, various materials can be used to insulate plastic windows (see table). But, all the materials that we talked about need further finishing. The only exception is the sandwich panel, which not only has exceptional characteristics, but also has excellent thermal insulation features and is a strong protection. The table below provides a more detailed list. available materials for insulation and their features.

Material name: Peculiarities:
Foamed polyethylene: A material that has excellent hydrophobic properties. Very often used with a layer of foil that reflects heat, keeping the maximum amount of heat in the apartment. It is very important to carefully handle the joints and gaps.
Basalt wool: An excellent solution if you compare the price-quality-technical characteristics. In addition to the fact that the material perfectly protects the room from the cold, it is also an excellent sound insulator, the noise from the street through such slopes will not reach the apartment. It is also worth noting that cotton wool is not afraid of moisture.
Multilayer panel Wonderful material, especially for DIY. Such panels are plastic profile, which complements the insulation tape.

As you can see, there are a lot of options for insulating the slopes of plastic windows outside and inside. Most suitable material you can easily choose for any wallet.

Slope insulation with foam plastic (video)

Features of the implementation of internal insulation

After you choose a heater for the slopes of plastic windows, you can get to work. And so, before you insulate the slope of the window yourself, check out the sequence of work (the video can be viewed from above):

  1. Remove the protruding mounting foam.
  2. Go over the surface with an antibacterial primer to prevent mold growth.
  3. Plaster the perimeter of the window so that the evenness of the surface allows you to easily fix the foam sheet on it.
  4. Clean the surface and prime it.

After preparing the surface, you can lay the insulation. Please note, if your choice fell on foam, then before fixing it to the wall, scratch the sheets with sandpaper to deprive them of smoothness. When the foam slopes are ready, the only thing left is the finishing.

To do this, you can choose any option proposed by the designer or finisher (the most popular solutions can be viewed in the photo in catalogs or on the Internet), or create your own unique finish.


The following solutions are in high demand:

  • imitation stone or brickwork, for which you can pick up a flat tile or decorative embossed stone;
  • sheathing with plastic, which imitates a wooden beam;
  • classic finish with white plastic or drywall;
  • plastering imitating a different surface;
  • staining;
  • modeling or its imitation, for which you can use a self-adhesive baguette.

This is not the whole list possible designs window. But, before making a final decision, consider whether such a window will fit into the interior of your home.

How to insulate slopes from the outside


For owners of apartments in high-rise buildings, the task of how to insulate the slopes of plastic windows from the street raises many questions. But, if you are not an expert in this matter, it is better not to risk your life and entrust the work experienced professionals, especially since today there are enough private firms to choose suitable option. So, outdoor option slope finishing is performed in the following sequence:

  • Remove the foam and treat the surface with an antifungal solution.
  • If there are irregularities, level the surface with plaster.
  • Lay the selected insulation and fix it carefully.
  • Set the corner.
  • Cover the insulated slopes with glue, cover with fiberglass mesh, give the surface evenness. Wait until the glue dries a little, and repeat the glue treatment again.
  • When the surface dries well, the slope can be painted with water-based paint.

That's all, now in your house even in severe frosts it will be warm and cozy.

Photo gallery of finished works

In the article, we will figure out how to insulate plastic windows for the winter with our own hands in order to enjoy a pleasant temperature in the house during frosts.

What is the reason for the need for insulation?

By installing polyvinyl chloride (PVC) windows, which are modern high-tech structures, many consumers are sure that such products will protect their homes from the cold. Theoretically, this is how it should be. Properly installed plastic windows perform their task for a long time - they retain heat. But even the best PVC profiles lose their strength over time. performance characteristics and the level of thermal insulation of the room is reduced. If plastic window structures were originally installed in violation of technology, problems with them will begin quickly enough.

Insulation of plastic windows of any manufacturer for the winter is usually required due to:

  • natural wear of the seal;
  • overlays extending from the double-glazed window;
  • violations of the geometry of windows caused by shrinkage of the wall of a residential building;
  • loose adjusting locking elements of PVC construction;
  • deterioration of the materials from which the products were made;
  • improperly mounted window sill or slopes.

Problems with PVC structures are solved in two ways. You can call the specialists of the company that deals with additional insulation, sale, repair of windows. And they will do everything in a short time at a professional level. necessary work. Conveniently? Undoubtedly. But the problem is that the services of such specialists are often similar in cost to the cost of acquiring a new PVC profile. Not everyone is willing to pay that kind of money. In this case, it makes sense to figure out how and how to insulate plastic windows. And try to do everything on your own.

What kind of work can you really do yourself?

At home, it is impossible to eliminate serious flaws in plastic windows. With your own hands, you can insulate only the following elements of a PVC product:

  • internal slopes;
  • the contour of the window frame;
  • ebbs and window sill outside the room.

At the same time, you should not forget about safety precautions. For example, outdoor work is undesirable in cases where windows are installed in apartments above the second floor of the building. Important nuance. Warming should be done only in warm weather. Pick a dry, windless summer or spring day, sort out the technology of work in advance, stock up the right materials and tools. And only after that proceed to the restoration of the operational properties of the windows.

At the first stage, you need to clearly determine in which particular areas of the window structure you want to carry out insulation. Bring a lit lighter to window profile and start moving it around the perimeter of the PVC product. In places where the flame begins to fluctuate, and it is necessary to produce insulation. The most vulnerable areas are the joints of the frame and wall surfaces, slopes and ebbs. With significant leakage, you do not even need to use a lighter. A breath of wind will be felt with an open palm.

You should also analyze the condition of window fittings. It is often the cause of a violation of the tightness of the plastic structure. If you see any defect on the fittings, a malfunction, just install a new part. You may not need to take any further action after this.

IN without fail examine the condition of the profile clamping mechanism. It is he who ensures the tightness of the window. Pay attention to the sealing gum. During operation, the gasket installed on the PVC structure loses its density (the phenomenon is due to climatic conditions, mechanical influences). This leads to a significant reduction in the volume and thickness of the gum. If the gasket has cracks, notches, wrinkles, it should be changed immediately. In the next section, we will describe in detail how to restore the tightness of the window profile.

We reanimate thermal insulation - the procedure for different situations

Let's start by replacing the worn out sealing gum.If the reason is precisely in it (the gasket has thinned and lost its original elasticity), proceed as follows:

  1. 1. Dismantle the glazing bead along the section of the structure with the detected flaw.
  2. 2. Remove the lining, carefully remove the double-glazed window.
  3. 3. Pull out the old seal, put a new one. The length of the latter should be 40–50 mm longer than the initial piece. extra centimeters you will cut off after installing a new gum. Its installation should be carried out without stretching and applying excessive force.
  4. 4. Install previously dismantled parts (glazing beads, linings, package) in reverse order.

Before installing a new gasket, remove dust from the window grooves, wash them thoroughly and dry them. Then the installation of the seal will not cause difficulties. He will stand up like a glove.

In cases where the seal looks intact, proceed to adjust the clamping mechanism. To perform this operation, you need to stock up on a special window key. First, inspect the glass pane. Press lightly on it, release. If it doesn't wobble a lot, reinforce the clamp with silicone caulk. Such a composition should not include acids that can adversely affect rubber compressor. If the double-glazed window is noticeably staggering, you will need to adjust the special. trunnion key - metal cylinders fixed in slots. Loosen the existing bolts. And then tighten the hooks that hold the cylinders.

In some cases, it is necessary to adjust the adjusting locks on the windows. At the location of the plumb lines of the PVC structure, two screws should be found. One of them is responsible for the pressure level of the sash, the second holds it in a predetermined position. Take a screwdriver, loosen (completely) the fixing screw, and then gradually tighten the clamping element (clockwise). After tightening, close the window, arm yourself with a lighter, check the design for drafts. If the flame fluctuates, tighten the adjustment screw slightly again. Produce the specified sequence of operations until you are sure that there is no draft.

Insulation for PVC windows - which one to choose and how to use?

Additional thermal insulation of plastic window structures can be performed different materials.As a rule, for these purposes they use:

  • mineral or stone wool. Slightly outdated, but quite effective heat-shielding materials for plastic windows (especially their window sills).
  • Building foam. Use this heater with caution. It cracks and then collapses under the influence elevated temperature and rays of the sun.
  • Silicone sealant. Easy-to-use material with high energy-saving properties.
  • Primer composition with water-repellent characteristics (for example,). It definitely needs an additional coat of paint.
  • Styrofoam. It is used for sealing gaps in slopes.
  • Heat-saving film. Modern way insulation of plastic structures, which is very popular among home craftsmen.

Let's see how to use energy-saving film. This option of insulation guarantees a high-quality result with little effort. You will need a hair dryer, adhesive tape (necessarily double-sided), sharp scissors, and preferably a clerical knife. Insulate the window simple algorithm. First, remove dirt and dust from the metal-plastic structure, using a damp cloth, degrease the cleaned areas. After that, paste over the window frame with double-sided tape.

Cut the energy-saving film to the required size with a utility knife. The resulting strips are attached to the adhesive tape. It remains only to spray the glued insulation with hot air from a hair dryer and, if necessary, remove air bubbles from under the film (carefully pierce them with a knife). The described technique for owners plastic products is the most profitable in terms of financial spending.

The internal and external slopes of the windows are insulated, as noted, with foam plastic, as well as three-layer special panels, pieces of extruded polystyrene foam, and fiberglass materials. Small gaps (up to 4 cm wide) can be sealed mounting foam. Internal slopes are insulated with foam as follows: treat the problem area with a primer, plaster the surface, install the foam sheet using mounting adhesive, wait for the insulation to seize, apply a layer of putty on top. Some home craftsmen additionally cover the heat insulator layer with drywall sheets.

Outside, the slopes are isolated a little differently. Treat them with a primer. In this case, it is necessary to use formulations with antibacterial additives. Then plaster the surface (if it is even, you can do without this stage). Cut out a board from a piece of polystyrene. It should cover the entire slope. Mount the plate using a metal corner and dowels (you can additionally use mounting glue). On top of the resulting structure, install a fiberglass mesh. It is usually planted on an adhesive composition. After the slope has dried, it is necessary to paint it with water-based paint.

Preparing the window sill for the winter period is a simple matter!

Separately, I would like to say a few words about how to insulate the window sill of a plastic window. With poor-quality installation of this element of the PVC structure, there is a high probability of the formation of a wide and deep crack.

Also, an illiterate installation causes relatively small gaps between the contacting parts of the window sill, under which they often put. In both the first and second cases, cold air will enter the dwelling. This cannot be allowed. Do the following:

  • carefully open the spec. plugs on the windowsill;
  • using a screwdriver, unscrew the fasteners;
  • remove the window sill.

All problem areas that were not previously visible under the dismantled structure will open before you. Close small gaps silicone sealant or mounting foam. Large holes should be filled with stone or mineral wool, covered from above plastic sheet and fix the last one. After that, put the window sill in place. Now your home will be much warmer.

If the cold enters the house through a plastic window, do not rush to call specialists. As you can see, many works are easy to do with your own hands, achieving good results. Try to return comfort and warmth to your home yourself!

Keeping warm is one of the key conditions comfortable living in in cold period time. More often effective way protection of the home is the replacement of the old window with a modern metal-plastic one.

But choose quality construction from a 5-6-chamber profile and double glazing is not enough, the window itself, of course, will not let the cold into the apartment, but the places where it adjoins the opening, if they are not properly insulated, may well cause cold air to penetrate into, dampness and mold.

Therefore, the insulation of slopes of plastic windows is a task of paramount importance. The opening is insulated from the outside and inside of the window, using different kinds materials.

Mounting seam between plastic construction and the wall is the weak point of the window opening. It is because of poor-quality sealing of the seam that unpleasant phenomena occur in winter, namely:

  • the formation of frost in the corners (the presence of voids and "cold bridges" leads to the freezing of the slope through and through)
  • a large amount of condensate and ice on the windows (poor insulation brings the "dew point" to inner surface glass, where condensation can solidify in severe frosts)
  • stagnation of water on the windowsill (water flowing down from double-glazed windows is collected on the windowsill)
  • the appearance of mold and fungus (moisture-soaked mounting foam and wall, comfortable conditions for them)
  • whistling in slopes in windy weather (reason for this phenomenon: voids facing the street)
  • destruction of the foam under the influence of atmospheric phenomena (under direct sunlight, from moisture and freezing, this material, in the literal sense of the word, crumbles)

To in winter period tenants of the apartment were not visited by such uninvited guests, slopes should be insulated with high quality, it is better to do this immediately when installing a new window than to redo it after a difficult winter after a year.

To insulate slopes, several types of materials will be required:

  • polyurethane foam
  • silicone or liquid plastic
  • sandwich board or drywall
  • directly insulation
  • plaster, putty

The choice of each material should be approached with skill, because even polyurethane foam has its own characteristics.

For mounting windows, foam with a small secondary expansion is used so that the slopes do not swell from an excessive increase in the foam layer.

The latter is more reliable, after hardening it adheres tightly to the surface and long time provides insulation.

Whereas silicone tends to flake off the frame, especially in the presence of moisture.

The choice of materials depends on financial possibilities and on the practical need to use certain materials, for example, in brick house with a quarter to install a window, it will be enough mounting foam and a sandwich panel, while in a panel or wooden house definitely need an extra one.

The sequence of insulation of the internal slope

Work on the insulation of slopes is carried out in several stages, from the inside and outer side window. It is best to do this in warm calm weather, precipitation is especially undesirable during outdoor work.

You need to start warming the slopes of plastic windows from the inside with an inspection and assessment of the state of the foam joint. If problems are discovered during the operation of the window after complete installation, internal slopes will have to be dismantled and carried out full cycle work on insulation, waterproofing and antiseptic treatment.

The foam joint should be tight without gaps, uniform. Excess foam is cut off with a clerical knife, if necessary, fill in the gaps with foam.

The outer slope should be cleaned of dust, old paint and broken parts of the wall, treat with a primer and level with a plaster solution.

Further, as well as inside, a heater is glued, but on the outer slopes it must be additionally fixed with dowels. To achieve even and hard corners, install metal corners. It is desirable to lay the surface of the outer slope reinforcing, otherwise cracks may appear.

The final stage of window insulation from the outside - decorative trim. For this purpose, you can use the same plastic sandwich panels, as well as inside, in order to save money, the slope can simply be plastered and painted.

On private windows wooden houses galvanized steel slopes are often mounted, this is especially relevant if the walls are sheathed with siding.

To facilitate the process of slope insulation, new types of materials are being developed. One of these are finished items for installation: foam plastic thermal slopes.

In addition to the convenience of working with them, this material has other advantages. Finished parts are covered with a protective and decorative layer with marble chips, which allows you to get beautiful window at minimum, thermal slopes also provide heat and noise insulation, do not let the "dew point" inside, exclude "cold bridges".

Installation of foam slopes is carried out using start profile which facilitates and speeds up installation. Joints are smeared special paste desired shade.

The need for insulation of the outer slope is determined primarily by the thickness of the wall: for brick house, it is enough to cover the foam joint with putty and paint, the window in and panel house it is better to insulate additionally.

Insulation of external and internal slopes will require some costs, but in operation a warm window will save money by reducing energy consumption for heating.

In addition, the absence of dampness and mold will save you from windows, slopes and walls. And the development of new materials for finishing will decorate the house from the inside and outside.

How to insulate slopes with foam plastic - on the video:

Determining factor for replacing old wooden windows on new, metal-plastic or PVC, is their ability to retain heat in a house or apartment. Naturally, when installing double-glazed windows, few people were interested in how they would behave in the future. Will they let the cold through, is it possible to insulate plastic windows if necessary, and is it necessary to do this? If so, how to prepare windows for winter and what is the best way to provide thermal insulation of windows and openings.


A plastic or metal-plastic window, like any composite structure, has weaknesses. They are the potential "gates" for heat leakage from the room.

Blowing from a plastic window - find and eliminate

Where can blow from plastic windows

To understand why it is blowing from a PVC window, you need to inspect the nodes, and for this you need to know constructive principle window unit.

The most common places to inflate:

  • window glazing bead (glass unit holder);
  • rubber compressor;
  • window fittings(for example, blowing from under the loops, into the handle);
  • the perimeter of the window frame - the junction of slopes, window sills, walls.

How to determine where it is blowing from a plastic window?

The presence of a defect in one of the components of the window block leads to the fact that it blows from plastic windows. Determine the exact location of heat loss plastic windows possible in three ways:

  • tactile hand. To identify the gap, it is enough to run your palm over the surface of the window block;
  • lighter. The search procedure is similar to the previous one, but the light is more sensitive to drafts and can detect even the weakest blowing.
  • paper. An ordinary sheet of paper is pressed against the window (inserted into open window and is clamped by the full closing of the sash), if you pull the corner of the sheet and it is easily pulled out, then the seal is not pressed enough (this may indicate that, in this mode, the old seal is poorly pressed against the frame).

Why it blows from plastic windows - the causes of heat loss

  • installation error. This is the most common reason associated with ignorance or non-compliance right technology installation of a plastic window. 15 years ago, this service was so in demand that everyone who had at least some idea about installing window blocks went to installers. Naturally, PVC installation few people performed windows according to GOST;
  • skewed windows due to shrinkage of the house. An urgent problem for residents of new buildings and wooden houses;
  • an attempt to save money. One of the weighty arguments in the competitive struggle is always the price, especially during the economic crisis. Price reduction often occurred at the expense of quality: saving on foam, on insulation, ignoring the need to protect the heat insulator, using low-quality components when assembling windows - all this eventually led to the fact that the consumer is forced to change or additionally insulate PVC windows;
  • physical wear of window components, in particular sealing rubber bands, or weakening of the clamping force of the sashes;
  • violation of the rules for the operation of plastic windows, which consist in the need to wash the window seal and treat it with glycerin. Such care prevents the loss of elasticity of the seal and its cracking.

What to do if blowing from a plastic window

Of course, eliminate the source of the draft. From a practical point of view, there are two simple options- call the master to repair-adjust (expensive) windows or do it yourself (cheap).

The desire to close up all the cracks on your own with improvised means is reduced to nothing, because: firstly, it is not aesthetically pleasing, and secondly, there are no guarantees.

When it is advisable to involve professionals:

  • plastic window installed recently. The installer is responsible to the consumer for the reliability of the windows (if the warranty covers this period);
  • the window opening is located at a considerable height (in a multi-storey building). It is better to entrust any high-altitude work to professionals (industrial mountaineering services). If the window is located on the second floor and above, the work will be associated with an increased risk;
  • if there is a manufacturing defect. For example, obvious manufacturing or installation defects that become apparent during the warranty period;
  • if parts need to be replaced. It is better to install "native" fittings if replacement is necessary individual elements window block;
  • work is carried out in the winter. Knowledge of the installation technology, and how to insulate plastic windows for the winter, allows installers to complete the work quickly, without significant cooling of the living space.

However, often, the cost of attracting specialists is equal to the cost of installing a new window, and this fact makes it more profitable to do the insulation work yourself.

What you can do yourself:

  • internal insulation of the window opening;
  • frame contour insulation;
  • window sill insulation;
  • replacement of seals.

How to insulate plastic windows with your own hands

When to insulate windows for the winter

Repair and insulation should be done before the onset of cold weather. This is due to requirements such as:

  • material requirements. Some building materials, such as dry mixes and sealants, can only be used within a certain temperature range. Otherwise, they lose their characteristics;
  • optimal humidity;
  • lack of draft;
  • the ability to perform both internal and external insulation;
  • reducing the risk of catching a cold for tenants of the apartment.

How to insulate plastic windows at home

The choice of insulation depends on the place of blowing.

1. Insulation of window openings for the winter

To insulate the window opening, you can use different materials and methods:

  • assembly foam. Expanding, the foam fills all the voids around the perimeter of the window opening, preventing the movement of air. Due to the fact that foam is 90% air, it is an ideal insulation. However, the foam needs protection from UV, high and low temperatures. Hence, it is inappropriate to use it by itself;
  • mineral wool. Excellent heat-insulating material for warming window sills and internal slopes. Cotton wool has a more limited range of use for window insulation;
  • styrofoam / polystyrene foam. It is used for insulation of slopes of plastic windows;

Note. Rigid insulation is used when the thickness of the mounting seam is not more than 3 mm, in other cases it is better to give preference to mineral wool.

  • silicone sealant. Reliable way eliminate blowing between the plastic elements of the window;
  • dry mixes for finishing slopes, used if necessary to insulate the window from the outside;
  • construction tape. Glued on top of the sealant or instead of it;

Advice. It is not recommended to use ordinary masking or window tape; after sticking it on the plastic of the window frame, unattractive marks remain that are difficult to remove without damaging the front cover.

2. Insulation of the window unit

  • sealant;
  • construction tape;
  • sealant;
  • heat-saving film for windows (energy-saving);
  • mechanical methods insulation, for example, tightening (adjusting) fittings.

After the issue of how to insulate is resolved, we will deal with the question of how to insulate a double-glazed window, frame, plastic, aluminum profile etc.

How to insulate plastic windows from the outside

External insulation of windows is carried out in the following areas:

1. Insulation of slopes of plastic windows

The first step to improve the thermal insulation properties of the window. Whatever insulation measures are taken in the house, until the slopes from the street are insulated, the cold will still come inside. At the same time, external insulation allows you to shift the dew point, which will prevent the appearance of dampness and the development of fungus. Covering cracks is a temporary measure, because. over time, the plaster layer will begin to crack and expose the mounting foam, which will collapse under the influence of atmospheric phenomena. But as a protection for insulation, plaster is an excellent solution.

How to insulate the slopes of plastic windows from the street

Work order:

  • material preparation (hard insulation);
  • cleaning slopes from dirt and protruding parts;
  • surface primer;
  • installation of a heater adhesive solution or special adhesive foam. It is preferable to use foam, because it eliminates wet work, has a minimum setting time, and holds the insulation sheet more securely;
  • sealing all cracks with glue;
  • installation of perforated corners;
  • installation of a polymer mesh;
  • plaster finish.

Advice. When installing the insulation, you need to make sure that it overlaps part of the window frame and completely closes the mounting seam.

2. Insulation of low tides of plastic windows

To insulate the ebbs, it is enough to foam all the cracks or place heat-insulating material in them. To avoid water getting on the heat-insulating material, a metal lath of the window tide is installed on top. The plank is installed at an angle (at least 5 °), its horizontal edge extends from the facade (by 20-30 mm), and the side edges are wrapped up. It is recommended to treat the junction of the plank with the surfaces with a sealant.

Internal insulation of plastic windows

Insulation of windows from the inside of the room is carried out in the following areas:

1.Insulation of internal slopes of plastic windows

Internal slopes are less affected by external factors, but put forward more requirements for the aesthetic component. Therefore, it is important to know how to insulate the slopes of plastic windows without losing the attractiveness of the window.

Work order:

  • crack treatment: removal of dirt, removal of old foam, falling parts, etc.;
  • applying a primer;
  • sealing cracks with mounting foam;
  • removal of excess foam after it dries;
  • installation of heat-insulating materials (foam or cotton wool);
  • drywall installation;
  • finishing plasterboard with putty and paint.

2. Insulation of the window sill of plastic windows

The gap between the wall and the window sill is one of the places of significant heat loss. Before deciding how to insulate the window sill of a plastic window, you need to determine it weakness, i.e. from where it blows. For example, blowing is possible between plastic parts windows and window sill. In this case, it is recommended to use a sealant.

Heat loss between the window sill and the wall is also possible. In this case, insulation is performed until the window sill is installed by laying a layer thermal insulation material. And also after its installation - by foaming the distance between the window sill and concrete wall or brickwork.

3. Warming by adjusting the plastic window

Elimination of skewed PVC window sashes

To reduce heat loss, you need to adjust the fittings (components) of the window unit.

How to adjust plastic windows for the winter - video

Replacing the seal in plastic windows

Elimination of blowing through plastic windows is possible by replacing the rubber seal. You can change the seal with your own hands, everything is simple there - just pull out the old seal and insert a new one into the groove (groove).

Which sealant is best? Please note that there are black and black window insulation on the market. gray colors. The black seal is more plastic, but attractive light color, is due to various additives that reduce the cost of a window seal, and at the same time, worsen its properties (tightness of pressing).

Replacing the seal in plastic windows - video

Additional ways to insulate plastic windows

  1. Washing windows. Paradoxically, cleaning the double-glazed window helps save heat. After all, dirty glass loses its ability to transmit sunlight, but continues to transmit rays in the infrared spectrum.

  2. Thick curtains. They also trap heat inside the room.

  3. Insulation of windows with improvised means. This method somewhat spoils the appearance of the window, but in critical cases, it can be a very worthy alternative to replacing the window block. As a heater, foam rubber, soaked paper, window tape, strips of white fabric, etc. are used.

  4. Insulation of windows with heat-saving film. The energy-saving film is glued to the entire surface of the window (on the sashes). The main thing is to stick it correctly, without air bubbles and wrinkles. The film reduces heat loss through glass by 75%.

  5. Window heating. In this case, a heating cable is located around the window, which heats the heating coil, or an oil cooler is installed on the window.

  6. Electrically heated windows. The most technologically advanced way is to install plastic windows with heated glass. The technology is applied at the stage of window production. Provides for the installation on the inside of the glass of a special conductive film (a transparent film with conductive threads), which heats the glass from the inside.

  7. A complex approach. The most appropriate for insulating windows in an apartment or private house, as it eliminates all possible causes of heat leakage through metal-plastic or PVC windows.

Window glass insulation with energy-saving film - video

Conclusion

Window insulation often negatively affects indoor ventilation. Full tightness is protection from the cold, but it is also fogging of the glass, which leads to the destruction of the slopes and the appearance of fungus. The problem is solved by periodic ventilation of the room, micro-ventilation, installation of forced ventilation, etc.

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