How to change rubber bands on plastic windows. How to change the seal on plastic windows. When to change

Seal on plastic windows serves for many years. Does it need care? What should I lubricate it with? And is it necessary to change the seal on plastic windows at all? Where can I buy it and how much does it cost? Read more about this.

Why change the seal on plastic windows?

First, let's talk about how people come up with the idea of ​​replacing the window seal.

First. It starts to blow somewhere. A person turns to the Internet and oh my God, he finds a solution - change the seal.

Second. Clients call a plastic window repair specialist, and he, instead of the simplest one, begins to replace fittings and seals.

Third. Recently, many small window repair companies have sprung up, whose managers call people and offer their services. Moreover, calling a specialist is free. As a result, we get the following. The technician, having examined the windows, comes to the conclusion that the seal needs to be replaced, motivating this replacement by the fact that the new seal is better than the old one.

So, I believe that the seal on plastic windows should be replaced in extreme cases. As a rule, problems with blowing are solved by other actions. Well, that's up to the client. If it goes comprehensive renovation windows with replacement of double-glazed windows and fittings, with adjustment, with replacement of the mounting seam, with alteration of slopes, then it makes sense to replace the seal.

Caring for seals on plastic windows

What in general can happen to the seal over time?

It can dry out, shrink and take on a flattened shape. All this happens because improper care or more precisely due to the lack of care for the seal on plastic windows. Therefore, it is customary to lubricate the seal twice a year with either silicone grease or a grease stick from a special kit for caring for plastic windows. By the way, it also includes lubricant for hardware and white milk for rubbing out scratches.

Silicone lubricant is sold in automotive stores, and a care kit can be purchased in the same place where components for plastic windows are available. More details

Replacing the seal on plastic windows

If you still decide to replace the seal, this can be done in two ways:

• On one's own
• By using

At self-replacement you need to know some important points.

The seal changes both on the sash and on the frame. For convenience, it is better to remove the sash by removing the pin from the top hinge. But you don’t have to take it off. When removing the old seal, remember how it stood.

When inserting a new seal, you need to make sure that it is not stretched, but rather is slightly compressed. This point is especially important in the corners.

Also, in the corners, it is better to glue the sealant to the plastic with super glue. The ends of the seal are also glued together. The new seal should not be lubricated. It's already lubricated.

On the sash, in order to insert the seal under the top hinge, this hinge must be removed.

How much does a sealant for plastic windows cost and where can I buy it?

It is known that there are several types of seals. They differ in shape depending on the PVC profile. Therefore, before you look required seal, you need to know the profile name of your window. It must be said that there are universal seals that fit most popular profiles.

The seal also differs in color. As a rule it is black. But, in Lately gain popularity grey colour. But, it is more expensive.

Where to buy sealant for plastic windows? The easiest way to purchase is to contact the same company where the windows were purchased or any window company. But, in window companies, the seal will be more expensive than in online stores, but they will cut off as many meters as you need.

Therefore, you can search on the Internet. Here are a few stores:

• inookno.ru

The cost of sealant for plastic windows is approximately 20 rubles per meter. And lastly, a video, really not very good good quality. But the man in this video knows what he's talking about. See for yourself.

Double-glazed windows and PVC windows today are found in almost every home, and if they are installed taking into account all standards, then a person long time provided reliable protection from cold, excess noise and wind. However, in some cases, even the highest quality plastic windows lose their properties, and drafts, dust, moisture, etc. begin to penetrate into the space. If such a situation arises, you will need to replace the seal, which can be done independently.

Before replacing the seal, you should understand what it is and where it is located in the double-glazed window system. So, the sealing harness is a rubber layer with a relief or spongy structure, which is fixed between special recesses in the windows. This harness runs along the perimeter of the entire window opening and has characteristics of resistance to bad weather conditions.

Thanks to this, the seal is not susceptible to cracking in the cold or deformation under the influence of high temperature. But the main advantage is that it does not allow heat, moisture or cold into the living space, thereby regulating the climate control in the room.

Types of seals in modern windows

• Rubber or rubber seal is the most widely used type of interlayer. Characterized by a low level of sensitivity to temperature changes, high resistance to mechanical damage and resistance to ultraviolet rays.
• Polymer sealant is a popular type of material that is made from modified PVC, i.e. from raw materials similar to plastic profile window. It is securely fixed and ensures high tightness of the window structure. But it also has a number of disadvantages: it is susceptible to temperature changes external environment, ultraviolet radiation and may lose elasticity.
• Polyethylene seal with foam filling - characterized by uniformity of shape and low performance recovery.

When is it necessary to change the seal?

Rubber seal is a fairly important component of the window system, which is responsible for tightness. plastic double glazing. How well the window will cope with providing sound insulation, maintaining temperature regime and will protect the room from ingress unpleasant odors from the street.

However, there are some signals that will help the owner determine when it is necessary to replace the seal on plastic windows. Such indicators include the following phenomena:

1. The occurrence of drafts.
2. Penetration of cold or extraneous noise into the room.
3. The appearance of condensation on the windows.
4. Occurrence in winter time ice on the windowsill or inside the window.
5. Manifestations of glass unit depressurization.
6. The occurrence of dryness and cracking of rubber.
7. The appearance of fungus and moldy formations on a rubber product.

The occurrence of such signs will clearly indicate that the rubber seal does not cope with its assigned functions. In other words, it is necessary to install a new high-quality sealing cord.

Selection of sealing layer

If the profile of a plastic window structure is made by a well-known brand name, then selecting and buying a seal of the recommended design or type will not be difficult. But regarding the third-party profile system brands, when choosing a rubber band, it is necessary to take into account some features.

Almost everything profile systems from little-known manufacturing companies are clones of the VEKA, REHAU or KBE brands, and accordingly their interlayer will be interchangeable. Thus, analogues of the manufacturer KBE are profile systems of such brands as: Vitrage, Novotex or Proplex. While the REHAU seal will be an excellent substitute for Montblanc or Brusbox brand windows.

It is also important not to fall into the misconception that window sealing harness can only be purchased as a whole coil of several hundred meters. Modern web stores and large construction markets sell this product both wholesale and retail. This allows you to buy the required linear meters of sealant without difficulty; you just need to accurately measure the parameters of the window structure and take a little extra material.

Important! It is not advisable to purchase a sealing layer that is thicker than what was originally supplied. The popular opinion that a thick seal can have higher levels of tightness, sound insulation and increased service life is erroneous. On the contrary, such a seal is more susceptible to deformation, which significantly reduces its service life. In addition, an excessively dense layer is an additional load on the locking window fittings and hinges, which will not affect the in the best possible way on the durability of the window.

You should also not make the mistake of purchasing silicone that is cheap and useless for plastic windows. universal seal. Its use is justified only in case of sealing wooden windows made according to the old model. For PVC windows, it is necessary to use specialized material that complies with GOST 30778-2001.

How to extend the life of the seal?

It is always better to prevent a problem than to solve it in a difficult and costly way. Therefore, it is much easier to avoid rapid wear and tear of window seals through light preventive measures. Some of these precautions and care include:

1. At least 2 times a year, it is necessary to thoroughly wash and wipe the windows not only from the inside, but also from the outside of the room, since falling debris and dirt significantly harm the operation of the seal.
2. Apply periodically to the cleaned sealing layer. special solution in the form of a silicone-containing preparation or regular glycerin, which can be purchased at the pharmacy.
3. When washing window designs It is advisable to avoid using greasy detergents to avoid them getting inside the seal and damaging the harness.
4. Fulfill renovation work or other dusty procedures in the room, it is necessary to keep the window closed so that dirt and dust do not settle on the seal. Otherwise, cleaning the contaminated tourniquet will be problematic.

How to care for window seals can be found here

Replacing the sealing cord yourself

If the sealing layer has become unusable and requires urgent replacement due to loss of quality and functional characteristics, the following auxiliary materials should be prepared:

1. Silicone glue.
2. Glue gun.
3. New seal.
4. Scissors.

Next, the seal is replaced . In order to avoid any difficulties or possible errors When installing a new layer of sealing harness, you should adhere to the following instructions:

1. Using scissors, pry up the edge of the old sealing harness and remove it from the window opening. It usually comes out of the grooves fairly easily. window frame.
2. Thoroughly clean the free space in the profile from dirt and dust using a soft, clean cloth. This must be done not for the purpose of aesthetic comfort, but so that the new tourniquet fits more tightly into the cleaned grooves.
3. Apply glue to the corners of the window frame to secure the new cord.
4. Carefully insert the sealing harness into the grooves. It should go along the entire window perimeter.
5. The seal should be laid in the corners of the window frame without tension or pressing; maintain uniformity.
6. Cut off the excess rubber tail with scissors.
7. Secure a single joint of the seal with glue in the corner of the window frame.

Important! When laying new sealing cord into the window perimeter, you should use a single piece. Under no circumstances should you tear or cut it, or lay it in parts.

When gluing the rubber sealing layer, it should be placed in the frame groove evenly, freely and covering the surface of the grooves.

You can see instructions for replacing the seal in this video fragment:

Company "Window Doctor" offers services for replacing the seals of plastic windows in Moscow and the Moscow region. Replacing rubber bands in PVC windows in combination with the adjustment of the valves, it will return the nominal tightness and provide thermal and noise insulation. When ordering complex works, a guarantee against blowing is provided for 1 year.

Replacing the seal on plastic windows

• Seals are replaced manually(the elastic is not stretched by the laying roller);
• we only use original German or Austrian seals(depending on the type of profile);
• We change it right away 2 sealing circuits;
• Materials match GOST 30778-2001"Sealing gaskets made of elastomeric materials for window and door blocks. Specifications"
• Discounts for pensioners - 10%.

Price: 150 rub./linear m.

On the window segment construction market you can find hundreds of brands PVC profiles. However, almost all profile systems can be divided into 3 groups:

• KBE-shaped (KBE, Proplex, Novotex, VITRAGE, etc.);
• REHAU-shaped(REHAU, Montblanc, BrusBox, etc.);
• VEKA.

There are, of course, exceptions, but in general, most profiles are copied from these brands. Consequently, the seals in such windows are completely interchangeable.

Window seal KBE
150 rub./linear meter

Window seal REHAU
150 rub./linear meter

Window seal VEKA
150 rub./linear meter

Prices for repairing plastic windows

From the life of rubber seals

Plastic windows are a single mechanism, all the details of which are important and carry their own functional load. The window seal performs the function of sealing the sash, protecting the house from noise, moisture and cold air. An old, cracked rubber seal may be causing leakage.

Regardless of the quality of the window profile and the supplied window fittings, a window seal that is of poor quality or has become unusable over time can negate all efforts to adjust the window for ventilation.

The photo taken with an infrared camera shows that the coldest parts of the window are the corners of the sashes. In this case, “bumps” appeared in the places where the seal was bent - the consequences of a stretched sealing gum.

First of all, the external window seal fails, as it is susceptible to external atmospheric influences. But there are exceptions, for example - renovations were carried out on the premises. Construction dust, all kinds of paint fumes, varnish, solvents, etc., lead to the seal drying out and losing its elasticity, which, in turn, leads to loss of window tightness.

However, it is necessary to change both sealing circuits (on the frame and on the sash). If you replace only outer contour seal, the internal pressure will weaken significantly.

The need to replace the seal may be caused by the following factors:

Defects in compaction rolling are especially noticeable in most Moscow new buildings. Large volumes of work, initially low quality windows and repair and finishing work in the premises - all this leads to the fact that sometimes at the time the apartment is handed over by the developer, the window seal needs to be replaced.

An experienced craftsman from our organization will replace the plastic window seal manually, without stretching the rubber, having pre-treated the seats, which eliminates the formation of “bumps” on the window seal.

How can you tell if your window seal has become unusable?

A suitable sealant has a rich color, it is soft and elastic. If you see that the rubber has dried out, cracked, or “bumps” have appeared at the corners, it’s time to replace the seal.

Caring for rubber seals

Modern seal for plastic windows made of synthetic rubber EPDM is designed for 9-11 years of operation. However, this figure is given taking into account correct factory installation, average load and timely maintenance. If the conditions are not met, the service life may be reduced to 5 years.

Therefore, twice a year, the surface of the window seal must be wiped with a damp cloth and treated with silicone grease, which forms a highly elastic film on elastomers (APKT, EPDM) and has water-repellent properties. As an alternative, you can use glycerin (available at any pharmacy).

At regular care, replacement of plastic window seals can be delayed for 5-6 years.

In addition to the seal replacement service, you can order from us a maintenance kit for white hard PVC windows, which includes lubricant for plastic window seals.

Myths about seals

In conclusion, let us give the following analogy: whatever good refrigerator, or washing machine, seals that have become unusable will call into question the reliability and practicality of the entire mechanism.

Note: There is a discount program for pensioners for replacing plastic window seals.

Plastic windows have replaced classic wooden ones, displacing them due to a number of advantages. Thanks to them, homes have become warmer in winter and cooler in summer, street noise does not disturb the atmosphere of home comfort, and boys playing football in the yard have ceased to cause concern among housewives. The rubber seal for plastic windows plays a big role in ensuring their functioning at the proper level. If you want to extend the life of your windows, then you should pay special attention to operation and timely replacement; this is small, but extremely important detail plastic profile.

What is a seal?

This is a layer of special material, which runs along the perimeter in specially designated recesses. Outwardly it resembles a cord in the shape of a parallelepiped with special protrusions for fastening. Made from rubber polymer material or polyethylene. Each type has its own advantages and disadvantages, however, the rubber seal for windows is considered the most universal; it is ideal due to its resistance to temperature changes, high level sealing and durability.

Exploitation

With proper care, the rubber seal can last up to 10 years. Achieving this is not at all difficult - you just have to stick to it simple rules care

• Clean the entire profile inside and out at least 2 times a year: before and after cold weather;
• Carefully remove dirt accumulated during bad weather using a sponge, soft fabric or an ordinary rag;
• After cleaning, a lubricant for rubber seals, or, in its absence, glycerin, would be appropriate as a lubricant.

Don't use fatty ones detergents when caring for the profile, they can harm the tourniquet;
Do not clean in bad weather - there is a high probability of moisture getting in and the subsequent development of fungus, dampness and pathogenic bacteria;
Carry out repairs and other work that involves a large number of dust, with the windows closed, to avoid contamination of the profile from the inside.

Lubricants for rubber seals

Only silicone lubricant is used for rubber seals. Applied immediately after washing the profile, it significantly increases the moisture-repellent properties of the window and protects its elements from corrosion. The principle of its operation is to create a thin layer of silicone, which completely covers the surface with inextricable molecules and makes it more slippery, as a result of which the impact of the external environment is significantly reduced.

It is prohibited to use VD 40 grease to lubricate rubber seals.

It also helps maintain the elasticity of the seal and prevent mechanical damage and freezing at low temperatures. Prices silicone lubricants not high: from $3 per cylinder. Agree, it’s not such a big amount to extend the service life of a window by 10 years. And given the universal nature of the lubricant, you can use it for your other mechanisms: doors, bicycles, car parts, household appliances. The most common manufacturers on the market are SILICOT, LIQUI MOLY, CAR-REP, XADO.

How to improve the effectiveness of the seal?

You already have a high-quality seal - a self-adhesive rubber band will perfectly help it in the fight for heat! They are very versatile (can be glued not only to windows, but also to doors, wall corners), last a long time, and do not allow moisture and foreign odors to pass through. As a rule, they are mounted on top of the frame at its joints with walls or. When installing, follow this algorithm: clean the surface from dust, degrease it with alcohol or acetone; cut the seal to the required length; delete protective layer, press the cord tightly to the surface and leave it for 2 hours.

How to replace the rubber seal?

Alas, perpetual motion was invented only in the works of philosophers and science fiction novels. And an eternal seal is even more unrealistic. Sooner or later you will still have to change it. This will be indicated by the following “symptoms”:

• More frequent drafts;
• Dampness on window sills and walls adjacent to the window;
• The appearance of mold and mildew on the rubber parts of the window;
• The seal appears swollen, dry and flaking;
• In winter on a frame or internal parts icing appears on the windows.

Such signs indicate that the part has expired and that it simply cannot withstand the loads placed on it. In this case, it is necessary to replace the rubber seal. How to do it?

1. Buy a new seal. If you have a profile from well-known company(VEKA, REHAU, KBE), choosing according to the design will not be difficult. However, when using third-party profiles, you should either consult a specialist or try to find an analogue. So, KBE seals are suitable for Virtage, Novotex, Proplex, and REHAU for Montblanc and Brusbox;
2. Get rid of the old tourniquet. Using scissors, pry up its edge and carefully pull it out of the grooves. Carefully clean the vacated recesses so that the new cord fits snugly into them;
3. Apply glue evenly to the corners of the frame;
4. Insert the cord into the grooves and run along the entire frame without cutting;
5. Remove any unnecessary residue with scissors;
6. Seal the junction of the ends of the seal.

Don’t be afraid of the myths that seals are sold only in huge kilometer-long rolls. You can also purchase it at retail.

You should not buy a tourniquet that is wider than the original one. This will only make it swell and crack faster. For additional protection In places with the potential for cracks to form, it is better to use the self-adhesive sealant described earlier.

Master of Architecture, graduated from Samara State University of Architecture and Civil Engineering. 11 years of experience in design and construction.

Very often, after several years of operation of plastic windows, a draft appears from under the sash, which cannot be eliminated by normal adjustment of the system. There may be several reasons, but usually it is wear of the rubber seals. How to eliminate such a negative phenomenon? The answer is simple - the seal will need to be replaced.

Reasons for replacing seals

The tightness of a plastic window depends on many factors: from the quality of the frame itself to the tightness of the glass unit. But every factor is important, including the degree of pressing of the sash, which is ensured by the presence of sealing rubber bands. If they are worn out, the following negative phenomena may appear:

Of course, it may be that the whole reason lies in the system settings, and a simple adjustment of the plastic windows will correct the whole situation. But, if all options have been tried and there is no result, then the seal will definitely need to be replaced.

How to check the closing tightness

What methods can you use to check the tightness of a plastic window sash? The simplest one is to use a thermal imager. The device will show where the coldest points in the system are.

However, you can check this using simple methods:

• Light a match or candle near the window. If the light fluctuates, it means the seal is broken.
• IN open window lay down a sheet of paper. They lock the door and try to remove the stash. This cannot be done with a securely locked system. Otherwise, the degree of compression is insufficient and the seal needs to be replaced.
• If the sealing is very poor, a draft can be felt even with your hand leaning against the window.

Types of window seals

Most often there are several types of sealing elements, which differ from each other in the material of manufacture.

Rubber types

The most widely used type of such element is rubber. The material is very flexible and resistant to various types loads Rubber seals have only one drawback - they are sensitive to temperature changes.

The main advantages are durability proper care(about 30 years), ensuring tightness and breathability.

Silicone varieties

Seals made of silicone are more durable compared to rubber counterparts (up to 40 years of operation). Lightweight and durable material, which is able to withstand many loads and impacts, including sudden temperature changes and ultraviolet radiation .

Polymer (EPDM) types

These types of seals on plastic windows are made from several polymer compounds. The main advantage is resistance to very low temperatures. Warranty service life – up to 20 years.

Thermoplastic elastomer (TEP) varieties

Seals are made from polymer compounds that have the ability to expand at elevated temperatures. In more moderate weather conditions, the seals resemble rubber. However, too cold conditions lead to failure (cracking).

PVC and foam types

The use of such a seal on plastic windows is acceptable only in a heated room. PVC is very sensitive to frost and cracks quite quickly.

Foam rubber – lightweight material and has excellent thermal insulation properties, but it is very fragile. The service life of these types of seals is within 3 years.

When choosing one type or another, it is worth considering that warranty periods will be maintained with proper care (leaf adjustment, cleaning and lubrication). If you neglect it, the period of use will be shortened significantly.

How do you know what type of sealant is installed in your windows? The best way out of the situation is to contact an installer. If this is not possible, you can simply cut off a sample and purchase the same one in the store. Also, to purchase, you need to measure how many meters of material you will need to purchase.

Seal replacement technology

So, after purchasing the sealing elements, they begin to replace them immediately. The process itself is divided into two stages: preparation and installation itself.

Preparatory work

Initially, you need to prepare the place before installing a new seal.

To make it easier to work, you can remove the entire sash. This is done very simply: the window is locked and the protective covers are removed from the hinges. Next, you need to knock out the pin from the top canopy. Open the window, holding the sash (it will start to fall out). By lifting it, it is removed from the frame.

1. First, dismantle the old sealing element. This can be done using a narrow spatula, which is used to pry up the material.
2. Secondly, the entire surface is thoroughly cleaned of dust, dirt and remnants of the old seal.

After wiping the surfaces dry, proceed to installing a new sealing element.

Seal installation

Installation instructions will depend on the type of rubber band fastening. There are self-adhesive types of seals that do not require the purchase of additional fastening compounds.

Self-adhesive types are mounted as follows.

The window sash is laid on flat surface. Remove from the seal protective tape. Installation is done with a protrusion designed for fastening into a groove running along the perimeter of the sash and frame. The tape is pressed lightly. After this, the sash is returned to its place.

When starting to glue the seal yourself, it is advisable to consult the seller about the type of glue used for this work. You can use types of compounds such as “Cyanoplast” or “88” superglue. But it is advisable to clarify whether the compounds will harm the seal and window frame. They should also have excellent moisture resistance.

Installation of the seal begins with applying glue to the groove where installation will be carried out. Then insert the elastic bands, pressing them lightly.

Under no circumstances should you tighten the seal too much; it will quickly break due to temperature deformations!

The sealing element on the window frame is also replaced in the same way.

How to extend the life of the seal

Despite what some experts may say, a plastic window does not work on the “set it and forget it” principle; it requires constant maintenance, otherwise its parts will quickly fail. To do this, you need to periodically clean and lubricate all elements, including rubber seals.

How lubricant for the sealant, you can purchase special compounds, or you can get by with more simple options, such as petroleum jelly or glycerin. Both of these products are sold in pharmacies and are very cheap.

Do not use products like WD-40 - this is not a lubricant, but a rust remover. It can very quickly render silicone and other types of sealants unusable!

To lubricate the rubber bands of the window, you can use non-aggressive silicone lubricants, sold in spray form, just like windows.

To extend service life, you also need to regularly change the window settings according to the season (winter/summer) twice a year.. This is done by turning the eccentrics at the end of the window (marker inward for summer, outward for winter). This way the degree of pressing of the valves is tightened or weakened, which will allow the seal to “rest” in the summer.

Changing the seal significantly extends the service life of the entire window and will allow you to avoid consequences such as freezing, condensation and their derivatives: rot and mold in the openings.