Repair of a hole in the frame from self-tapping screws. Waterproofing plastic windows is one of the mandatory installation steps. How to seal plastic windows inside

Sealing plastic windows is a process of processing internal and external seams, which allows you to get rid of gaps and cracks through which cold air enters and warm air exits. Sealing windows is an integral part of the repair work and is performed at the stage of cosmetic finishing of the window opening.

The tightness of modern plastic windows is ensured by seals, additional sealants (mounting foam, etc.). In the role of seals in window structures are special rubber gaskets, often having a tubular shape. They are installed in the space between the frame and the sashes, around the entire perimeter of the window.

Seals are designed to protect the structure from moisture penetration, cold air, dust, noise. Manufactured from specialized rubber designed exclusively for such purposes. Often silicone or rubber plastic can be used instead of rubber. Among all these materials, it is silicone that is most suitable for use in areas of sharp temperature changes, especially in areas with a fairly cold climate, since only silicone has a consistency that does not allow it to harden from exposure to low temperatures.

The most common are window structures in which two sealing circuits are involved at once. One circuit is located on the inside, the other is oriented to the street. In luxury metal-plastic windows, three sealing circuits can be involved, which significantly increases the level of soundproof sealing of such a window (however, it has practically no effect on other performance indicators). It is this narrow focus, coupled with increased cost, that makes the use of a third seal quite inefficient and unpopular.

In addition to seals, another method of sealing window metal-plastic structures is also used. This method consists in the so-called blowing with polyurethane foam of all joints and cracks between the wall and the surface of the window frame. Among the advantages of this sealing method, we can confidently name the following: availability of use and low pricing policy, the ability to evenly distribute and receive quite serious wind and other mechanical loads, good thermal insulation, additional insurance of the window structure from distortion and damage.

However, the inept and excessive use of this method is fraught with not very pleasant consequences:

1. Polyurethane foam quickly collapses or deforms under the influence of sunlight and a large amount of moisture. It must be protected from light with a layer of paint or plaster, and water-repellent paint and silicone sealant will perfectly protect it from moisture.

2. Inexperienced foam users often forget to cut off dried excess. This is fraught with the possibility of deformation of the base layer, and, in addition, produces an extremely unaesthetic spectacle.

3. Not so long ago it became known that under the influence of temperature, even a long and reliably dried mounting foam can change in the total volume (from 5% to 10%). As a result of this periodic change in volume, with a joint width of approximately 10 cm, the so-called “walking” of the window frame (in the region of 5 mm) is noticed, and this, in turn, can lead to a violation of the integrity of the action of the locking mechanisms of window fittings. The window, depending on the weather conditions of the current season, may either not open or, on the contrary, not close. In addition, this can lead to damage to the surface layer of plaster adjacent to the window. In accordance with this, the installation of a window on foam cannot fully prevent the expansion of the window frame structure directly with foam, and is not able to provide rigid fastening of a PVC window in the opening.

To avoid many problems, it is recommended to seal the entire external seam located between the wall and the frame surface. If it is possible to open the window sashes, then it is more than possible to reach the seams, but when this is not possible, then it would be best to seal the seam immediately before installing the double-glazed windows.

To date, the ideal sealant for window structures has not yet been invented. The main difficulty, according to many experts, lies in the fact that the surface of the wall adjacent to the window is mostly uneven. In addition, there is another pressing problem - a skewed opening, which causes the width of the seam, located at different junction points, can often fluctuate around 5 cm. If such a phenomenon is observed, then it is recommended to first plaster and then paint, in order to giving maximum elasticity, a seam located at the junction with the frame. For a relatively even opening, the width of the seam in which does not exceed 15 mm, it makes sense to seal with silicone sealant, you can also use a polyurethane (self-expanding) sealing tape (also PSUL). This method is quite effective and technologically advanced, but at the same time, it is very expensive. The use of PSUL for the most part makes sense only for sealing canopies, in the case of glazing balconies and loggias. Due to the low cost and high adhesion to concrete, in other cases the use of silicone paste sealants is the best option.

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Sealing windows plays an important role, because without it, moisture and cold air will enter the room, which will significantly worsen living conditions. It is easy to carry out this procedure yourself. Many manufacturers offer high-quality, easy-to-use sealants and other window materials.

Why is sealing done?

How to close the seams?

• Silicone sealant can be used to process seams. It is an excellent polymer for sealing windows. Be sure to seal the room from the inside, but we must not forget about the seams of the structure. Depending on the condition of the window, how large the structure is skewed, the width of the seam can vary from 0.5 to 5 cm; if the skew is very large, it will have to be plastered and painted, otherwise it will simply be impossible to fill such a large space with sealant.
• Sealant is not the only substance that can be used: expandable polyurethane tape is also suitable for closing gaps. It is well suited for closing the joints between the window frame and the wall: the joint is elastic. However, this material is only useful if you need to close a crack no wider than 15 mm. The tape is often used for processing, but this material is quite expensive and requires protection from the external environment, like polyurethane foam.

What types of sealants are there?

Sealing plastic windows from the outside and from the inside can be carried out using the same sealant, but it is important to choose the right type. Silicone materials are considered the most common. The basis is silicone rubber, which is a reliable insulator from moisture and air. If noticeable vulcanization is required, acetate or neutral sealants can be used. Such materials can fill gaps, protect metal parts from corrosion.

Acetate sealants can not be used everywhere. The fact is that the material releases acetic acid, which contributes to its expansion. It is harmful to human and animal health, therefore, when using such a sealant for interior work, it is necessary to ensure good access of oxygen to the room. However, this type of material has more durability and strength than others.

Acetate-based sanitary silicone sealant designed to seal gaps between building materials and finishing elements

Acetate sealant is best used if the surface is smooth. On ribbed and textured types, the material is poorly fixed, gaps may remain.

Neutral materials are comfortable with high moisture repellency, well suited for use on porous surfaces, so there is no problem if you need to seal the frame and concrete wall. In addition, the use of universal materials is convenient. The cost of such sealants is higher, but you don’t have to think in which situation they can be used and in which not.

When choosing a sealant, pay attention to what temperature conditions you can work with it, what temperatures are critical for the material.

Sealing is usually not difficult, since the materials for it can be purchased at any hardware store, and the window frame itself is airtight and does not require any intervention. If the profile is cracked, it does not make sense to solder it or try to plaster it. A window with serious mechanical damage is usually changed, as it ceases to be airtight and cannot fully retain heat.

What if the windows are made of wood?

Sealing of wooden windows occurs approximately according to the same principle, however, quite often the frame itself can dry out and crack. Unlike plastic, it can be repaired using special putties. In addition, the putty is used for sealing the product in the place where the frame is connected to the double-glazed window. In order to prevent moisture from passing through the seam, it is covered with a transparent sealant over the putty. Working with the frame and window opening is similar to the sequence discussed above.

Sealing a window will not cause difficulties if you approach the work correctly. This process can be easily organized independently, spending a minimum amount of time and providing reliable protection of the room from cold air.

One of the most vulnerable places in the house, where heat loss occurs most often, are windows. Of course, it is impossible to provide ideal heat and noise insulation in this place, but everyone can reduce the level of noise and heat loss to a minimum. The thing is that the cause of increased noise and heat loss are cracks in the windows. This applies not only to old wooden windows, but also to more modern metal-plastic ones. We will talk about how and with what to cover up the cracks in the windows in this article.

Causes of cracks in windows

As a wise man said, it is better to eliminate the cause of the disease than to constantly treat the consequences. So with the cracks in the windows should do the same. To do this, it is enough to understand the cause of their appearance and eliminate it once and for all.

Reason one: crooked installation

It's no secret that the level of professionalism of the master depends on how durable and reliable this or that design will be. It's the same with windows. Mistakes at the stage of window installation lead to the fact that it blows from under the window, and the noise from the street does not allow you to sleep.

It is almost impossible to control the quality of work. To do this, you need to have certain knowledge. But something can still be done. You just need to check how well all the gaps between the window frame and the opening are sealed. This can be done with a simple lighter, bringing its flame to the joints. You should also pay attention to the outside of the window. The places where the frame adjoins the opening must also be securely caulked or blown out with mounting foam, and their surface must be painted over or puttied. Same thing with the inside.

Reason two: seal wear

Unfortunately, eternal building materials do not yet exist, and cracks appear in the windows during operation. And in conjunction with installation errors, the period of their operation will only decrease.

Problematic are all the same places where the window frame fits to the opening. If for some reason the sealing materials were not painted or plastered, then under the influence of temperature extremes, ultraviolet radiation, wind and precipitation, they quickly wear out. Mounting foam, even one that is intended for external work, sparkles, gradually exposing the voids between the window and the wall. Foam rubber or other sealant shrinks, crumbles and is blown out, thereby increasing the gap. To extend the life of the seal, it is enough to inspect every two to three years and maintain the integrity of the protective layer. It is best to do this in the spring, when it is already warm and there is no precipitation.

Reason three: wear of the frame and fittings

As well as a sealant, window frames and fittings have their own resource. Over time, the sashes begin to fit poorly to the frame, as a result of which cracks appear. This is especially true for wooden windows. A characteristic problem of wooden frames is the drying of wood, which leads to the appearance of cracks. But at metal-plastic windows, the rubber seal on the sashes most often fails.

It is impossible to avoid wear, but it is possible to extend the service life. It is enough to carry out regular seasonal inspection and maintenance of windows. This is primarily painting wooden windows, adjusting fittings so that they do not hang out.

How to fix cracks in windows

Despite the fact that today most of the windows are metal-plastic, after a certain time their owners face the problem of cracks in these ultra-modern and reliable windows. As for wooden windows, cracks are their inevitable companions. How to get rid of cracks, we will consider below.

How to remove the gaps between the frame and the wall

If, during installation, the master did not apply a protective layer to the foamed areas, then over time the foam will collapse, and gaps will inevitably appear. The gap between the window and the wall, the window and the window sill is quite common in such cases.

Removing them will require:

• narrow spatula;
• long screwdriver;
• rags or ordinary rag;
• newspaper or plastic wrap;
• gloves.

From the materials you will need:

• White Spirit;
• mounting foam;
• frost-resistant acrylic sealant, you can also use rubber-bitumen or polyurethane roofing sealant.

Important! Never use silicone sealant. Under the influence of temperatures, it rolls down and becomes unusable, thereby exposing the foamed cracks.

Having acquired everything necessary, we get to work. We start with preparation, namely, we eliminate the old foam. To do this, we do the following:

1. We unscrew 2 - 3 self-tapping screws at low tide, if any.
2. We begin to clean the gutter and substitution profile. We take a screwdriver and pick out the old brown foam. It crumbles quite easily, and the remains are blown out.
3. With the same screwdriver, we clean the foam at the joints of the walls and the window profile. For reliability, you can walk with a brush to remove its remnants.

Important! At this stage, you will need another person for safety net so that you do not accidentally fall out of the window.

Having finished with the preparation, we proceed directly to sealing the cracks. To do this, do the following:

• We take a balloon with foam and blow it out all the joints and cracks. For processing narrow hard-to-reach slots, the nose of the feed tube can be flattened.

• Without waiting for the foam to dry completely, we fix the ebb.
• Let the foam dry for 24 hours.
• Using a regular clerical knife, cut off the excess foam.

• We take a bottle of sealant and cut off its nose at an angle so that it is more convenient to fill the seams with it at different angles.
• Gradually squeezing out the sealant, apply it over the foam;

Important! At this stage, you will need another person for safety net so that you do not accidentally fall out of the window. Remove excess sealant on the spout with a rag soaked in white spirit. The same rag can be used to remove the remaining sealant from the frame.

• Using a narrow spatula, level the sealant flush from the window towards the street and leave to dry.
• After the sealant dries, it should be painted with ordinary alkyd paint to protect it from external influences.

Particular attention should be paid to the area under low tide. This is the most uncomfortable place, so some skill is required. But if everything is done correctly, then the gap between the window and the window sill will be eliminated once and for all.

How to remove the gaps between the frame and sashes

It has already been noted earlier that cracks in plastic windows can also appear due to wear of the rubber seal. Eliminating such gaps is quite simple - you need to get a new seal and do the following:

1. Carefully remove the old seal from the groove in the window frame.
2. It is advisable to wipe the grooves and clean them of possible dust and dirt.
3. Then we take a new seal and use a special tool or a small wooden spatula to fill it into the groove.

Important! To extend the life of the sealant, it must be treated once a year with a special silicone spray to protect it from drying out.

The described methods are suitable if you decide to eliminate cracks in wooden windows. But the following should be noted.

• First, during the preparation phase, wooden windows are checked for damaged or rotten glazing beads. If any, they should be replaced.
• Secondly, the seal between the frame and the sashes can be rubber or foam rubber. But unlike metal-plastic windows, the sealant is simply glued onto the frame.
• Thirdly, foam rubber can be fixed between the frames as a sealant, but not glued.

The most reliable way to get rid of gaps in windows

Sealing gaps and protecting the seal from wear solve only part of the problem. Like it or not, from time to time you will have to update the protective layer. To avoid all this fuss, you need to create reliable protection. To do this, you will have to make external slopes.

Of the materials required:

• plastic P-profiles 8 mm;
• plastic panels;
• mounting foam;
• sealant;
• primer;
• White Spirit;
• three wooden spacers for the entire height of the window opening and three for its width.

From the tool you will need:

• mounting gun for sealant;
• electric jigsaw or hacksaw;
• tape measure, ruler and marker.

All work on the creation of external slopes are as follows:

• We clean the walls from dirt and construction paint.
• We take measurements of 3 slopes. First, we remove the size of the upper slope, then the side ones.

Important! Each slope is a trapezoid, so you should be careful when taking measurements.

• We mark future slopes on plastic panels and carefully cut them to the required size.
• For vertical panels, we put on a U-shaped profile on each side. Only for the top panel, the U-shaped profile is put on only on the outer and inner sides, and the sides remain empty.

• Installation starts from the top slope. To do this, apply foam in a zigzag pattern on the rough side.
• We install the upper slope in place and start spacers under it. We install two spacers at the edges, and one in the center.

Important! In order not to damage the plastic surface, pieces of foam rubber or a rag can be placed under the spacers. The side slopes should be installed after the foam on the upper slope has dried sufficiently and the spacers can be removed.

• We take vertical slopes, apply mounting foam in a zigzag manner and install them in their places. Installing spacers.
• After the foam has dried, we proceed to sealing the outer part of the slopes. To do this, apply sealant, level it. Let dry and paint with alkyd paint.

Important! When performing work on creating slopes, it is possible to accidentally stain the panels with sealant or mounting foam. Therefore, we use a rag moistened with white spirit to eliminate flaws.

Creating external slopes is somewhat more troublesome than simply sealing gaps. But as a result, you will get much more reliable protection for many years. In addition, it is better to get rid of the cracks in the windows in this way than to patch them up somehow with a simple mounting foam without a protective layer. Finally, I would like to note that the reliability of protecting the interior from drafts and dampness depends on how careful you are when performing work.

Successful installation of a window is only part of the installation process, since the quality of the sealing of the structure directly affects the concentration of heat inside the room and the optimal level of comfort. In addition to practical indicators, the external design of the window opening will noticeably change. The ability to properly close the windows after installation will save not only from the penetration of cold air from the street, but also eliminate the formation of fungi, mold and the unpleasant smell of dampness.

Preparation for outdoor termination

It is necessary to close the slopes both from the inside and from the outside in order to avoid the deplorable consequences of the flaw. Under the influence of environmental factors, the layer of polyurethane foam will undergo destruction and quickly lose its functionality. For this reason, external work is given priority and only after they are completed are they taken for interior decoration.

The finish serves as a protection for the mounting foam from destruction and an aesthetic appearance.

Before proceeding with the installation, it is necessary to determine the materials that will become the basis of the slope. As external elements, plastic panels or the plaster method are often used.. Similar materials are used for interior work, where the choice is greatly expanded, including sandwich panels, wood or drywall.

After installing the window unit, all cracks and gaps are carefully sealed with foam

Before sealing the window, all empty spaces must be carefully filled with mounting foam.. After that, waterproofing materials are applied and the structure is allowed to dry and settle. Before proceeding with the termination work, put the installed structure in order and treat it with antifungal drugs that are used during installation.

Covering windows with plaster

The plastering method is widespread both among experienced professionals and non-professional craftsmen. The popularity of plaster finishing is explained by the low cost of consumables and good quality compared to other methods. There is also a small minus for this type of finish, which is a large time investment. To get really good results, the masters will have to sacrifice some amount of time. However, labor costs will turn into a successful seal.

Plastering of external slopes is carried out in 3 stages

By average standards, plaster work on external slopes will take from 2 to 3 days, since each of the applied layers of the mixture must dry well before applying the next. Be sure the first and second layers are made with a heat-insulating composition, which you can buy in every specialized store. The layer is very important for keeping the heat in the house, which is especially important for regions with low temperatures. The third layer - the last one - is applied with a conventional plaster mixture. As soon as the sealed slopes dry out, you can safely engage in grinding and painting the surface in the desired colors.

Close up with plastic

Finishing slopes with plastic materials will be an excellent option for achieving quick results of decent quality. Universal plastic will help close small defects or errors made during the installation of the structure. Plastic slopes can be freely bought in almost every hardware store with a wide selection of colors. True, they will cost more than plaster.

Plastic panels are installed quickly and easily

To install such a panel, first you need to fit it by cutting it to the desired size and attach it with mounting glue, and fill the joints with silicone sealant. Simple installation does not require knowledge of specialized skills, and the panels themselves have a long service life and do not require special care.

We close the internal slopes

Great attention should be paid to the interior decoration of windows, since not only the level of comfort and reliable protection from the external environment, but also the aesthetic component will depend on the quality of workmanship. Try to carry out the work with high accuracy so that the result pleases with a presentable appearance.

Application of drywall

This material is one of the most affordable price options that meets the requirements of environmental friendliness. It does an excellent job of keeping the heat inside the room and looks attractive from the outside. The disadvantage is the difficulty in installation, since the formed joints will have to be sealed especially carefully. Installed drywall must be puttied and painted. When choosing this material as a finish, give preference to moisture resistant species. Before fixing the sheets, it is desirable to make a layer of glass wool in order to increase thermal insulation properties.

Installation of drywall is a laborious and complex process.

Sandwich panels for embedding

Sandwich panels consist of two PVC sheets, the filling of which contains polyurethane foam with a high thermal insulation function. The material is characterized by an increased level of comfort with excellent heat retention.. Installation of sandwich panels is carried out using profiles, under which an isover is laid. The technology is in many ways reminiscent of the installation of plastic slopes and is simple to implement. The thickness of the structure is 10 mm, and the material itself has a long service life.

Sandwich panels have high thermal insulation properties

Plastic variant

The demand for plastic seals is explained by the harmonious execution due to the ability to choose the same color and structure of materials similar to the color scheme of the window opening. The panel is easily mounted on a special glue, but first the surface must be laid out with an isover. Upon completion of the work, the openings are carefully sealed with silicone sealant.

Technology for sealing windows with plastic slopes

Since plastic slopes are very popular due to the simplicity and affordability of execution, we will take a closer look at the scope of work and the principle of installation of the structure.

The interior decoration of the window is most often performed with plastic panels.

First you need to remove the remnants of the mounting foam from the working surface, treat the openings with an antifungal agent and lay a layer of waterproofing. Pay attention to closing the window under the windowsill: the free space must be carefully filled with foam to prevent future blowing.

The space under the windowsill is carefully sealed with foam

The starting profile must be attached around the perimeter of the window frame, and a rail should be placed on the outside. This is an important mounting part on which the profiles for slopes are mounted.. This can be done with staples of a construction stapler. Be sure to check the thickness of the rail: if there are slight deviations, apply a thin lining.

Next, the panels must be placed between the prepared profiles. You need to start work on the upper side of the window box, moving to the lower ones. First, the plastic is introduced into the starting profile and well fixed, after which you can use the sealant.

Silicone sealant is used to seal joints

Before you start fixing the second side of the plastic, a layer of mineral wool is laid under it. Such a step will improve the function of sound and heat insulation. Having successfully attached the slopes along the top of the window, you can install the side panels in a similar way. At the end of the work, the joints and the connection strip with the window sill are covered with a thin layer of liquid plastic, and the excess is carefully removed.

Even an inexperienced master can close windows after installation, since the methods are easy to perform and do not require high labor costs. Ready-made structures made of plastic or using plaster will delight you with a neat appearance and reliability. It is only important to follow the technology and stock up on knowledge on how to correctly and efficiently seal the window.

The installation of new plastic windows certainly requires special attention, since if the installation technology is violated, the desired result cannot be achieved. Although the windows themselves can be of very high quality, the way they are installed and the materials used in sealing have a significant impact on the overall efficiency of a new product. One can hope that it will be possible to create and maintain comfortable temperature conditions in your house or apartment, and even at any time of the year, only if the waterproofing of plastic windows is correctly performed during installation.

Preliminary waterproofing of PVC windows

With a huge variety of building materials, very few of them are successfully used in waterproofing plastic windows. Often, waterproofing is performed only partially or some time after the installation of windows, or the sealing of slopes and window sills is generally postponed indefinitely.

Advantages and disadvantages of polyurethane foam

It is generally accepted that after installing windows, the voids between the window frame and the opening are filled with polyurethane mounting foam. And this is logical, since foam has several advantages:

• unpretentious to the nature and quality of mating surfaces;
• well insulates the room;
• performs tight sealing;
• protects from excessive noise;
• successfully takes over and distributes mechanical stress for a long time;
• compensates for the wind load.

On a note: Today, you simply cannot find anything more convenient and more effective than foam for the initial stage of window installation. This must be acknowledged.

But it turns out that mounting foam alone cannot constantly cope with the effects of weather factors, and after some time, even after a few years, it may begin to lose its properties. Here is what can happen to this sealing material if it is not protected from the outside:

1. Open polyurethane foam under the influence of ultraviolet radiation after a certain period begins to darken and crumble.
2. Foam is not a waterproofing agent in the literal sense, which means that it itself needs to be protected, especially from freezing precipitation in the winter season.
3. Dry foam, when the temperature changes during the day and with the change of seasons, somewhat changes its initial volume. Such fluctuations in volume, especially with a foam layer thickness of 8-10 cm, can occur in the range of 5% or more. The minimum change in size, depending on the external temperature, is also characteristic of the plastic window frame itself. As a result of regular compression-expansion cycles, this can lead to technological gaps. , cracks and penetration of through air flows . This disadvantage most often makes itself felt when the installation of the window was made without the use of a rigid mechanism for attaching the frame to the wall.

Common waterproofing options

In order to prevent the foam from turning into powder under the influence of direct sunlight, frost and water, after preliminary waterproofing of PVC windows, performed using mounting foam, it is advisable to plaster the outer slopes as soon as possible after installing the windows, applying at least a minimum layer of cement-sand mortar to them or other plaster composition for outdoor use. The plaster will accurately prevent direct rays from hitting the foam, and protect it, although not completely, from moisture and drafts.

There is another simple sealing option - the joint between the window and the wall on the outside of the window, right on the surface of the foam, can be treated with silicone sealant for outdoor use. For some time, it can indeed be an obstacle to moisture, but in harsh weather conditions, the sealant layer will have to be replaced with a new one from time to time.

Complex methods of waterproofing plastic windows

Waterproofing with special tapes

Consider what a more reliable and somewhat more complex version of the waterproofing of plastic windows looks like. To prevent the penetration of unnecessary moisture into the living space and protect the mounting foam from destruction, it is necessary to take care of something even at the stage of installing windows. What is it about? Let's consider in order:

• before starting the installation of the window, a pre-prepared self-expanding sealing tape made on the basis of polyurethane (PSUL) is glued along the perimeter of the outer edge (not the end) of the frame. This material is impregnated with additives to maintain its elasticity for a long time. PSUL, if desired, instead of a frame, can also be attached to the window opening itself, to that part of it that will be in contact with the outer front surface of the plastic profile;

• a butyl rubber waterproofing tape is applied to the end of the window frame along the perimeter, after which the frame is mounted in the opening by securely fastening it with hangers to the surface of the slopes;

• at the next stage, if the distance from the opening to the frame is significant, you can glue the same waterproofing tape on the wall. This will serve as additional protection against moisture itself and moist air penetrating through the wall;

• only after gluing the protective tapes from the outside and along the end (possibly along the wall) is the frame blown with mounting foam. With this installation technology, fresh foam can only expand inside the room, since the outer edge is protected by PSUL, which prevents foam from protruding. In this case, the expandable sealing tape will protect the polyurethane foam layer from the damaging effects of UV radiation during the entire life of the window;

• now we wait until the fresh foam fills the entire volume of the window cavities by expansion and hardens. After the foam sealant has completely dried, the excess protruding into the interior of the room must be carefully cut off with a sharp construction knife;

• further finishing of slopes is carried out at the discretion of the owner. It can be made with cement mortar, putty mixtures, drywall, plastic and even ceramic tiles. It depends on the nature of the premises and the requirements of the customer;

• after the completion of the main volume of finishing work with slopes, the angle formed between the window frame and the slope can be treated with a waterproof sealant, finally blocking the access of moisture and outdoor air to the room. A thin layer of sealant will hide microdamages that appear at the joints as a result of frame expansion due to changing temperature conditions.

Waterproofing with the use of water repellents and liquid rubber

In recent years, the use of water repellents is gaining popularity - compounds of an organic nature that include silicon in their composition and have water-repellent properties.

The water repellent solution is applied to the treated surface, as a result of which a hydrophobic film is formed on it, which does not prevent the penetration of air, but prevents moisture from entering the room. The film is invisible to the eye, does not spoil the general appearance and is able to perform its function for a long time.

In similar situations, liquid rubber can also be used, consisting of a two-component cold-type mastic made on bitumen. It has been successfully used on concrete, wood, stone and even metal surfaces. The material is characterized by high elasticity and excellent waterproofing properties. Its price is quite high, therefore, only those who really appreciate reliability and quality, and are ready to make financial sacrifices for it, can have it.

It is possible that very soon new universal and even more reliable means for protecting plastic windows from moisture and drafts will appear on the building materials market, but for now, the skillful use of existing products already provides excellent results.

Video about sealing and waterproofing windows