How to properly install a window sill on plastic windows with your own hands: step-by-step instructions, video. How to properly install a PVC window sill? How to insert a window sill into a plastic window

05.11.2019

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Modern tendencies require innovations in every area of life, including repairs. With the development of technology, new materials and products appear that have much better performance. If previously it was necessary to install two window frames to provide heat and sound insulation, now it is enough to install a thin metal-plastic window, which perfectly copes with the same functions, and is also more efficient. Instead of a heavy concrete window sill they now use PVC products, which are important to be able to install correctly to achieve optimal performance in operation.

Peculiarities

Installing a plastic window sill in an apartment or house can be done for various reasons. The simplest of them is the wear and tear of the old window and its complete replacement, including all its components. A long time ago metal plastic windows have gained authority and are very popular, as they are easy to install, and their service life and performance characteristics very high.

Thanks to modern window is a universal product; you can add a wide variety of window sills to it that will meet the stylistic goal of the room and provide comfort.

The most versatile option is considered to be a PVC window sill, which fits perfectly with the window itself, creating a single composition. In addition, the cost of such a product is much lower than that of more sophisticated options such as natural stone. In order to accurately determine which window sill is best to install in the room, you need to know the advantages and disadvantages of this window element.

Among positive qualities you can note:

resistance to moisture and different temperatures– a PVC window sill does not change its shape in any way and appearance;
no need for serious care of the product;
light weight of the window sill, unlike similar options;
does not need painting to refresh the appearance;
does not shrink like wooden products;
possibility of installation of this element any size, shape and even color depending on the wishes of the owners.

If we talk about negative sides, then these should include:

Fragility of the product - if used carelessly, dents and even holes may appear on the window sill.
If the top layer has a gloss, it is susceptible to scratches, which will quickly deteriorate the appearance of the product.
Weak resistance to very high temperatures. You should not place hot pots and kettles on a PVC window sill, as this can deform the surface, ruining it forever.

There are quite a lot of options for materials from which a window sill can be made, but most often they choose those that look good and have the desired characteristics. If speak about PVC structures, then an important advantage is that it is inexpensive and does not require most additional work, which are inherent in other materials: treatment against corrosion, rotting, painting.

Moreover, thanks to excellent characteristics These window sills comply with GOST, because they are not harmful to humans and have parameters that ensure the safety of residents.

Style and design

Since metal-plastic windows are often white, PVC window sills were initially made only in this version. With the growing popularity of this product, different color solutions for both windows and window sills began to appear. Most often a variation white is an imitation of wood, which is used in bedrooms or children's rooms. In addition, this option allows you to install modern designs V wooden house, which will not stand out externally, but fit into the concept of the building.

To produce this kind of product, laminated PVC films with a wood look are used. To impart the desired properties, additional impregnation with melamine resin is carried out.

This way you can give the surface the look of any wood, be it oak, alder or cherry.

In addition, window sills finished with natural stone, most often granite or marble, are also popular. Thanks to this solution, you can avoid buying an expensive and heavy product, but get the same nice option window decoration. If you need to somehow decorate the room, which is especially often the case with a children’s room, then you can resort to using colored window sills.

They can have different textures and shapes, which are selected taking into account the wishes of the client.

If we talk about convenience, then for each type of house there are options of different lengths and widths, so that you can manage the space as correctly as possible. Brickwork differs in width from the walls panel house, that’s why we need different window sills here. If we talk about original design solutions, then you can make a window sill-tabletop that will perform two functions at once, thereby making it possible to do without buying a table.

This option will look good in small kitchens or bedrooms where you need to place a lot of space. functional zones in a small space.

The use of glossy or matte coating, original shapes and sizes - this is all that the owner of a PVC window sill can get. Often, such options are made to order and are a little more expensive, but the appearance of the room with such an accessory will be inimitable. Each owner decides for himself what to install in his home based on taste preferences and financial capabilities.

What to install?

Typically, window sills are made in standard sizes to fit most common window options. But due to the fact that frames can often have atypical characteristics, very often it is necessary to trim the product on the spot so that it fits under the window as well as possible. To approach the process correctly, the first thing you need to do is take all the necessary measurements, and only then cut off the excess.

It is best to mark with a pencil or marker so that it is clearly visible.

Necessary tools and components

Any repair process requires the correct selection of tools to ensure maximum efficiency work, and right choice components will make the process of operating the product simple and not causing any problems or worries.

To install a PVC window sill, you need to have:

the product itself;
corner for determining the slope of the window sill;
level to check the evenness of installation of the product;
marker with tape measure for marking;
silicone sealant for sealing joints and seams;
polyurethane foam to eliminate cavities between the window sill and the wall of the house itself;
jigsaw for cutting off unnecessary parts;
hammer drill to dismantle the old structure and provide necessary conditions for new;
screwdriver for fastening the window sill;
self-tapping screws;
cement mortar for leveling the surface under new window sill and sealing of construction installation sites;
a stationery knife and clean rags to give the window structure a finished look.

In addition to the basic tools and materials, you should also not forget about additional ones, which include slopes, thanks to which the window is transformed, creating a completely different perception of the room.

The cover on the window sill, which is put on both sides of the product, is necessary in order to frame it beautifully and close the cavities into which dust or moisture can get, from where it will not be easy to remove it. Usually it looks like a smooth strip with protrusions at the ends.

When installing, you need to cut it in half, and then measure out the required amount so that it fits perfectly on the new window sill.

In order to cut a window sill, you can use several tools:

Hacksaw for metal, any home owner will have one. The process of cutting with it will be lengthy and will require considerable physical strength.
Jigsaw, which is best suited for such work, as it cuts off excess parts quickly and without much difficulty. For best result It is important to set the pendulum stroke to zero, and for the work choose a metal file with small teeth.
Bulgarian helps to trim unnecessary parts very quickly and accurately, but at the same time it is very noisy and dusty during operation.
Cordless saws are cordless instruments. It is easy and convenient to work with such equipment, but their disadvantage is the high cost of the tool.

When all the tools are ready, you can begin work, in which it is important to follow all the recommendations, otherwise the product may become distorted and the appearance of the window will suffer greatly from this.

It is important to remember that the places that need to be foamed must dry out for some time so as not to change their characteristics.

Preparatory work

In order to install a new PVC window sill, the first step is to dismantle the old structure. Depending on what material it was made from, and will be carried out certain works. It is best to remove old parts carefully so as not to damage the masonry and have to restore it. If it was not possible to carry out dismantling effectively, then additional procedures will be needed.

First of all, the surface where the window sill will be installed is cleared of debris and unnecessary parts. Next, you need to calculate what dimensions the new window element has and whether it is necessary to change the dimensions of the opening. If both designs had approximately equal performance, then the process will proceed faster. If there is an obvious difference, then it is necessary to carry out work to adjust the size of the window opening to install a new PVC product.

If the window sill is thinner than before, then the difference can be eliminated using cement mortar, if it is thicker, then the excess part can be removed using a hammer drill, after which you will have to make a concrete screed.

When calculating the height of the base for installing a new element, it is important to take into account the gap for the foam on which the product will be attached. It must be at least 2 cm. If necessary, additional work is carried out to adjust the grooves in the side slopes. In order for the window to keep the cold out, it is important to exclude any possibility of this, which is why the junction of the frame and the window sill is coated silicone sealant, after which the installation itself takes place.

When calculating the width of the window sill, it is important to decide where exactly it will begin and end. You can make it the width of the window or leave a margin of a few centimeters so that the edges on each side go into the wall. Typically, such gaps are four to six centimeters long.

Initially, you need to make cuts in the slopes into which the new PVC window sill will be inserted.

Installation subtleties

In order to install a new PVC window sill with your own hands, you need to correctly install the structure. The installation process of such parts can be carried out using:

polyurethane foam And special glue which are used to fasten the window sill;
brackets for fixation;
profile for installing PVC products.

The simplest and convenient option There will be an option with foam for installation. The first step is to prepare wooden wedges that will serve as supports for the new window sill. They are placed over the entire surface of the prepared base. It is important to check the levelness of the installation using a level and note the tilt of the product. It is necessary that the bevel be directed into the room in order to direct condensation not towards the stove, but into the room.

If any inconsistencies arise in these indicators, then the wooden wedges can be increased or, conversely, decreased depending on the situation.

All work is carried out in stages to avoid installation errors and unsatisfactory results. Once the wedges are the right size, free space between the window sill and the base is covered with foam. To prevent the angle of inclination from changing, it is important to install a weight on the windowsill that will provide the required resistance, so the foam will harden correctly. For complete hardening, at least two or even three days should pass, after which you can remove the weighting and use the window sill.

The process of installing a window and window sill goes step by step, and it is important to take into account all the stages in order to get a decent result in the end. This process is inextricably linked with the finishing of the walls, therefore, when planning the installation option, you need to think in advance about how further work will be carried out.

If you plan to install a window sill before finishing it with sandwich panels or plasterboard, then there is no need to ditch the bottom. As the thickness increases, the slab will be pressed using the finishing material.
If the slopes are covered with varnish or putty paint, then in this case it is necessary to trench the surface.

If you plan to use massive elements in the form of wood panels, linings, traffic jams, Venetian plaster, then it is important to take into account the protrusion of the slab, taking into account the thickness of the coating. Otherwise, it will be recessed inside the opening, which will not look aesthetically pleasing.

Thus, replacing a window requires that the old concrete window sill also be removed and replaced with a new one. For comfort further work It is advisable to remove the old structure without causing any major damage to the masonry.

You can replace a heavy and outdated window sill with a modern PVC product, which is not only light and quite durable, but also has a varied appearance that can be matched to the style of the room, which is very convenient.

The work process comes down to the following steps:

Installation of a new product, inserting it into pre-prepared grooves.
Aligning the window sill relative to the window using wooden wedges.
The fixation process, when you can fix the window sill using polyurethane foam, which long years will provide excellent performance characteristics.
The use of plugs, which can have different shapes. Depending on the design features of the window sill, they can be without lugs, if the thickness of the product is quite large and there is a desire to make it look like a stone monolith, or with lugs if minimum thickness And simple version window element.

To change the window sill quickly and correctly, it is important to complete all the steps, which include dismantling old structures, installing new and Finishing work. This is important because incorrect dismantling of an old product will add unnecessary work, inaccuracies in installing a new one will lead to operational problems, and improper finishing work will affect the final appearance.

To remove the foam that will remain after installation, you must first cut it off using stationery knife, and then apply a layer of tile adhesive, which needs to be puttied when dry. Only after this can the surface be painted or wallpapered.

Dimensions

To do high-quality repairs, you need to select the right materials for it. When replacing windows and window sills, it is worth choosing the correct dimensions of the latter. Standard width the dimensions for it will be:

50-60 cm, if installation will be carried out in a brick house;
20-25 cm for panel houses.

The most wide window sill, which can be found on the open market, is 80 cm, and the narrowest is 20 cm. If we talk about length indicators, it can be from 1.5 meters to 6.

All unnecessary parts are removed during the installation process so that the resulting window has an aesthetic appearance.

If we talk about atypical windows, for example, small structures in a bathroom or other room, then in this case there is no need to use a large window sill, the best solution the width will be 10 cm. Almost all standard products have a thickness of 2 cm, which is sufficient for moderate loads and full use of the window element. There are also thinner products, where the thickness is 1.8 cm, which implies lighter loads on the surface.

If the window sill is planned to be used as a table, then its width must be sufficient for this, so products are produced in widths from 60 cm to one meter. This option can be used in almost any room where you need to minimize the amount of furniture and increase functionality.

Colors

Due to the emergence of new materials for the manufacture of window sills, color options for such products have also appeared. The simplest one is to use various colors and shades, which can either be transferred to the window itself or go separately as decorative element premises.

Often such accents are made in the kitchen, bedroom, nursery, where there is an opportunity to add color to the interior.

For a more refined appearance, you can use window sills imitating natural stone, marble and granite, or wood, which looks especially beautiful in wooden buildings. The variety of options for window sills can include not only color, but also texture, which can be glossy or matte.

For original style and to give the interior an expensive appearance, it is better to use gloss, but in a quieter room the matte version will look great.

Window repair is always accompanied by nuances that it is advisable to know and skillfully use.

If you need to use a hammer drill, it is important to protect your face and hands with glasses and gloves so that nothing gets on them.
When working on the base for a new PVC product, you need to clearly know its dimensions, so as not to knock off the excess part of the wall, but also not to make the hole smaller than necessary.
The gap that forms between the window sill and the surface on which it rests must be sealed with foam. To help this material adhere better, it is important to wet the surface before use.
When choosing the width of the product, it is important to know that its protrusion beyond the slope should not exceed 6 centimeters. If this is neglected, the circulation of air masses may be disrupted and the windows will fog up heavily.
When repairing a balcony and replacing windows with access to it, the thickness of a standard window sill will be 20 cm, but if you have suitable dimensions, you can use even meter-long products. You can also fix the product on the balcony using foam or glue, depending on the situation.

For useful tips on choosing and installing window sills and slopes, see the following video.

Successful examples and options

You can install windows both in a wooden house and in a brick one, and depending on this you can choose the color of the entire structure and design features certain parts.
The use of a wooden window sill in combination with a frame in the same color blends harmoniously with the entire house, which is finished with modern wood-imitation materials.

There are so many things in our lives whose purpose we hardly think about. It seems to us that they have always been and always will be.

We notice them only in situations where we are confronted with them directly, for example, when we are trying to install a window sill.

general information

It would seem that everyone is familiar with the element of a window opening, but it can solve not only practical, but also aesthetic problems. For example, it smooths out the difference between the thickness window frame and walls, creating a single whole.

A beautiful and correctly installed window sill performs various functions– provides an area for flowers, an additional table in the kitchen or as a resting place in some interiors, as shown in the photo below.

The most common materials for it are plastic, wood, marble, fake diamond. In the video in this article you will see some of them. The price of each of them differs from each other, and not everyone can be used in terms of weight. Therefore, they are selected depending on the type of window, the style of the room or the entire home.

The installation of each of them is individual in its own way. But there is general principles How to properly install a window sill on plastic or wooden windows.

One of them is that you should definitely tilt it slightly in the direction of the room. In this case, condensation or excess water from watering flowers will not accumulate between it and, for example).

Technical significance

The window sill is not just a whim or someone’s desire to increase it with its help usable area rooms. It has a very specific technical purpose.

In fact, the window sill is an artificial barrier to warm air rising from heating appliances. It prevents it from instantly mixing with the cold outside, dispersing most of it throughout the room.

For reference: It is considered an insulator that helps preserve normal temperature in room.

How to prepare walls

Before properly installing a plastic window sill, the area for it must be cleared of uneven areas and construction debris. To remove dust, it is best to moisten it with water, then the solution or polyurethane foam will have better adhesion to the wall.

According to the rules, the window sill must extend into the side walls of the window block (slopes) by 2-5 cm on each side. Therefore, it is necessary to make the appropriate recesses with a hammer drill.

Tip: if the walls are perfectly smooth, it can be installed flush with the plaster; if not, it can be moved forward by 1-3 cm.

Installation of a plastic window sill

Today, PVC windows are becoming increasingly popular, and at the same time the demand for plastic window sills is increasing. You don't have to be a professional to install the latter, home craftsman can do it with his own hands, even without training.

To do this you will need a certain construction tool and a plan for completing the work. But, if you are not confident in your abilities, it is best to take several lessons from the masters. The instructions below will tell you the main points of the process.

Tools and materials

Before installing a plastic window sill yourself, you need to prepare:

Corner grinder(“grinder”) or jigsaw, but you can limit yourself to a hand saw for metal;
hammer drill with attachments for working on stone;
building level, preferably 1 m long;
polyurethane foam;
spray foam gun;
wooden wedges;
construction knife with replaceable blades.

Work order

Installation is carried out in several stages:

product selection;
adjusting the window sill to the required size;
installation of a window sill;
laying the gasket;
checking deviations;
fixation plastic block.

Below we will tell you in more detail how to install a window sill on plastic windows.

How to choose a PVC window sill?

You can buy it today at any hardware store. Standard length products vary from 1.5 to 3 m, width - 0.15-0.60 m.

The length of the window sill is selected based on the width of the window opening plus an additional allowance (minimum 30 mm on each side). The width of the plastic block is selected depending on the depth of the window opening - the distance from the window profile to the wall, taking into account the allowance for the recess of the window sill (about 20 mm) and the protrusion of the window sill from the opening.

It is important to remember that the window sill should not completely cover heating device otherwise circulation will be disrupted heat flow, which will lead to the formation of condensation and the appearance of ice on the windows. If this happens, then in some cases you will need to replace and repair plastic windows.

The permissible protrusion size is from 50 to 70 mm. In some cases it may be completely absent.

Caution: Protrusion of the protrusion may block natural air circulation.
If this happens, the windows will fog up.

Fitting the plastic block

Window sill installation and gasket installation

Clean the installation site of the plastic block from debris and dust with water.
Insert the prepared workpiece into the groove provided under the window profile to a depth of about 20 mm.
Place wooden wedges under the window sill, with a distance between the bars of about 400 mm. Wooden wedges-stands will not only help you position the window sill correctly and press the block tightly against the window), but will also take on the entire load.

Checking deviations

With help building level determine the correct installation of the plastic block. The level must be maintained in all directions.

If there are unevennesses, the situation is corrected by selecting the thickness of wooden wedges-stands. Do not forget about the slight slope of the window sill towards the room.

Fixing the window sill

Before fixing the window sill in the opening, it is weighted down. To do this, use various objects, for example, bottles or jars filled with water. Afterwards, they check again for any deviations and begin to secure the product.

The PVC window sill is fixed using a can of polyurethane foam installed in a special gun. In addition, from the outside of the window it is pressed to the frame using self-tapping screws. After a day, the load is removed from it, and the excess foam is cut off using a stationery knife.

Conclusion

After reading the article, you learned how to install plastic window sills on PVC windows yourself, without involving professionals. (see also article) The main thing is to carry it out correctly preliminary preparation and follow the instructions. Thanks to these tips, you can install not only plastic ones, but also any other ones on any windows.

The final stage of arranging window openings is installing PVC window sills yourself - with proper preparation and minimal repair skills, this work can be done independently, quickly and reliably.

Characteristics of window sills made of polyvinyl chloride boards

The window sill is the most visible part of the window design and the most functional part of the entire window. They prevent heat leakage from the room and act as a barrier to outside cold air; they serve as a support for various items interior (including very heavy and bulky ones - for example, flower pots). Installing a PVC window sill with your own hands will allow you to acquire a strong, durable and beautiful surface along the entire length of the window, thanks to the following qualities of these products:

Resistant to sunlight, high and low temperatures and humidity;
Resistance to impacts, scratches, pressure and other types of mechanical impact;
Lightness – Compared to a wooden product of similar dimensions, the weight of a plastic window sill is 3-5 times less. This greatly simplifies installation work, from preparation to installation;
Ease of sanitization and resistance to chemically active substances;
Durability - both in terms of maintaining aesthetic qualities and strength qualities;
Environmentally friendly, absence of harmful fumes and emissions throughout the entire service life.

The service life of plastic window sills ranges from 10 to 30 years - that is, it is quite comparable to the service life of a newly installed plastic window. To achieve such longevity, installing PVC window sills with your own hands must be based on compliance with a number of rules and recommendations.

Installing a PVC window sill with your own hands - according to GOST, we prepare the window opening

The width of plastic window sills varies from 30 to 70 cm. The greater the width, the greater the mass of the product and the more stringent the requirements for the base for installation. The type of opening being installed is of great importance - whether the window sill is installed together with a plastic window or partial installation is performed. The design advantages of PVC plates allow them to be mounted under old wooden frames - such budget renovation will allow you to update window openings at a relatively low cost.

Any preparation for installation work with PVC window sills begins with removing their “predecessors” and examining the exposed wall. We should be prepared for the fact that the result of our research will be disastrous. In old houses, under massive wooden window sills, you can find jagged walls with mortar deposits, formed dips and potholes. It will not be possible to get by with the removal of construction waste; the base for PVC window sills must be smooth and solid.

You will have to start working with the solution, since the volume of pouring activities will be small. It is necessary to take a flat board 10-30 cm longer than the length of the window opening and use a level to secure it to the wall. The top edge of the board will become the bottom border of our “foundation”. Next, cuts are made in the side walls for the installed window sill - 5-10 cm from the corners. At the third stage, all the cracks in the depth of the opening are isolated - between the already installed window and the opening. After which the base for the window sill is filled with cement or cement-crushed stone mortar.

Modern cement mixtures harden quickly, but achieve proper strength in 1-2 days. The installation of PVC window sills should be started no earlier than the specified period, otherwise the base may be damaged during the installation process - and then you can’t even dream about the accuracy of the work.

How to install a PVC window sill - installation instructions

If you have a solid and level base, installing a PVC board as a window sill will not take much time, but you must be careful and precise. First of all, you should decide on the size of the “removal” of the end relative to the wall - it is recommended to limit it to 8 centimeters. With a larger offset, it is difficult to guarantee the strength of the structure under strong pressure on the end part.

However, if under the window it is planned to install heating radiators in special niches, the dimensions of the “removal” can significantly exceed 8 cm and reach 15 and even 20 cm. In this case, a deep insertion of the entire slab into the side walls and additional fasteners along the window line are necessary. The battery itself should be located with a large margin relative to the window sill extended above it, for good air circulation in the heated room. They have a lot of advantages; they are quite doable from plastic.

Modern models of plastic windows are equipped with a hidden rail profile at the bottom of the end. It is to this rail that the window sill plate is attached, which guarantees the tightness of the entire window. Even if there is no rail groove, it is prohibited to move the plastic window sill further than the vertical border of the window - it is not intended for contact with precipitation and frosty air.

Trimming the slabs when installing PVC window sills with your own hands is done using ordinary hacksaws for metal and exactly at the installation location. Further installation proceeds according to the following scheme:

The plastic plate is pre-inserted into place to assess the accuracy and horizontality of its location. Pay attention to the tight contact with the lower edge of the window frame, as a guarantee of the future tightness of the entire structure;
Wedging is carried out - wooden wedges should be installed between the base and the window sill to firmly fix the PVC window sill. For a window 1.5 meters wide you will need 3 wedges (at the edges and in the center), for large windows you will need 4 or 5 wedges;
The window sill is removed and the wooden wedges are attached to the mounting base (lightly at first, they can be adjusted). It is necessary to remove the wedges from the outer end, because a separate strip will be fixed under the front border of the window sill;
The PVC plate is installed on fixed wedges and checked for horizontalness using a level. If necessary, the position of the wedges is changed or they are simply cut on the spot.
When the entire structure is positioned accurately and firmly, an even strip is attached to the front of the opening - it will serve as an additional and reliable basis for the force exerted on the end part of the window sill;
Once again, the strict horizontality of the slab installed on wedges and slats, its tight contact with the window frame, and resistance to mechanical pressure in various places. It would not be superfluous to check the free opening and closing of window sashes;
Before finally fixing the PVC window sill, all internal openings between the wedges and the rail are treated with polyurethane foam. The polyvinyl chloride plate is carefully pushed into place - when it hardens, the foam will expand and fill the entire internal space.

All that remains is to fix the window sill in the mounting gaps on the side walls, and this must be done using fragments of stones or bricks, in combination with cement-sand mortar. After the solution and foam have hardened (that is, the next day), you can begin to design window slopes, installation of heating radiators and other stages of repair and improvement of the premises.

Replacing a window sill or installing a new one with your own hands is the most important moment in installation of any type of window. The fact is that it is designed to play not only an aesthetic role in the interior, but also a protective one. It is the one that is constantly exposed to all kinds of temperature changes and mechanical loads. It is he who suffers from constant exposure to moisture and sun rays. And it is all these points that largely determine the features of its installation.

The materials used to make window sills can be very diverse - wood, PVC, marble, etc. And, of course, all the installation nuances will depend on them to some extent. However, for this action there is still common list recommendations that allow you to navigate the work algorithm itself.

The window sill is attached inside the room and at the bottom of the window opening;
At the bottom of the window sill, a maximum of 60 mm from its edge, there is a gutter - a teardrop up to 20 mm deep, necessary for draining water;
The final stage of installation begins only after preparing the lower plugs;
The lower part of the solution of the side slopes is cut down to the wall. Then the wall is cleaned of debris, dust, dirt, etc.:

The window sill is placed like this:

So that the board is in a strictly horizontal position (measured using a level), and the transverse slope of the window sill inward from the window frame is approximately 3 0;
The wedges that form the basis for installation should not extend beyond the wall. Therefore, if they are installed correctly, they will require additional fixation with plaster.
After this, they proceed to removing the window sill, wetting the wall with water and covering it with lime-gypsum mortar, so that the level of the mortar exceeds the level of the wedges by 15 mm;
The window sill is placed in the solution and pressed forcefully onto the wedges until it stops;
On last stage The excess mortar is leveled and pressed flush with the wall plaster, followed by rubbing it down. In this case, the window sill itself fits into a groove made on the block at the bottom of the box. In relation to the side slopes located in the lower part, the same actions are performed - covering with mortar and subsequent rubbing.

The window sill can be installed correctly, so as to prevent its subsequent sagging and breaking, by placing metal strips under it and inserting the ends of the latter into the lower plug. However, most often you have to deal with plastic and wooden window sills, during the installation of which strength and reliability can be achieved in your own way for each option.

Installation algorithm for the main types of window sills

Plastic

Installing a plastic window sill is very simple. No special skills or abilities are required here. It is extremely important to be extremely careful in the process of sawing PVC, when you should avoid using strong pressure so that scratches and chips do not appear at the cut site.

First, cleaning is carried out;
Then, using the horizon level, they set up the window sill using beacons. By the way, when installing a window sill, it is tilted down 5mm so that the moisture accumulated from condensation does not linger, but flows down;
The free space is filled with polyurethane foam, the excess of which is subsequently carefully cut off with a construction knife;
Finally, the ends of the window sill are protected with plugs, and the window sill itself is cleaned of the protective film.

Such a window sill is fixed with a special mortar or glue, but you can also use screws on mechanical supports. For the same reason warm air the top rose freely from the radiator, thereby drying the inside of the slopes and double-glazed windows when heating the room; installation of a PVC window sill requires leaving a protrusion of up to 60 mm. The length of the plastic window sill should not exceed the width of the window opening by 15–20 cm. Inside the room, the projection of the window sill should be at least 5–7 cm wide. Installing this type of window sill above the battery steam heating, as a rule, leave a slight gap.

Wood

Installing a wooden window sill is more difficult, so what about high-quality fitted wooden boards They have already begun to forget, although they are not only no less aesthetically pleasing and beautiful than plastic, but also more environmentally friendly. To properly install a window sill of this type, you will need to pay attention, first of all, to raw material. The window sill board must be free of defects (such as knots and other defects), and, in addition, well dried.

The board is carefully planed on each side,
After this she is given the right type and, of course, a selection of tearjers and kalevkas is made. By teardrops we mean gutters 7–9 mm wide and 5–6 mm deep, located at the bottom of the window sill board at a distance of 2–3 cm from its front side;
Upon completion of processing, the board is cut to the required length and given required form. At the same time, it is important to have everything window boxes horizontally at the same level. By the way, it is also possible to create composite window sills, connected using dowels, dowels and glue. The optimal length of the window sill is 10–15 cm greater than the width of the window opening. And the optimal protrusion inward should be 5-8 cm less than the width of the window opening.

In this case, installing a window sill with your own hands is done as follows:

Work begins with the lower section of the board placed on the wall. It is on this that the felt treated with antiseptics is attached, which is attached to the nailed board with the help of shingles;
The prepared board is started at a quarter bottom beam boxes and fastened to the box with long nails, thereby fixing it even more securely. In this case, the heads of the nails are cut off and the severed ends are driven into bottom part frames of the box, and then the window sill board is placed on the ends of the protruding nails. If you have to deal with brick or stone walls, the window sill board will have to be fixed using a lime-gypsum mortar. The window sill should slope inward by no more than 2 0. If its ends need to be embedded in concrete or plaster, they must be treated with antiseptics.