Instructions for installing a window sill on plastic windows. How to properly install a PVC window sill? Plastic window sill mode

Window installation companies often do not complete the job. And the customer is left with a bare window opening that needs finishing. But it also happens that, in order to save money, a person takes on the installation of the window sill board himself. Then the question arises - how to install the window sill so that it holds firmly and does not freeze. The correct installation also determines whether there will be condensation on the windows, and therefore mold. Before starting work, please read the instructions below carefully!

PVC panels for window sills occupy a leading place in terms of sales. And for good reason! After all, they specifications give a large number of installation advantages.

The panel has stiffening ribs

TOP 5 advantages of a plastic window sill

Installing a plastic window sill with your own hands has the following advantages:

The size of the panel can be adjusted according to location. If acrylic or stone models have a strictly specified size, then PVC window sills can be easily cut. A jigsaw or plastic saw is suitable for this.
The material is characterized by steam and moisture resistance (absolute impermeability). It will not become saturated with moisture from possible condensation or raindrops, like its wooden counterpart. An additional advantage is that the design is not sensitive to ventilation disturbances, which are often found in modern apartments.
Ease of installation. Installing a window sill with your own hands is quite a feasible task for a beginner.
Thermal insulating properties. Thanks to its special structure, the panel additionally prevents heat loss.
Lack of pores where dirt and harmful microorganisms usually accumulate.

Video: How to install a window sill with your own hands

How to choose quality material

Before purchasing and installing a PVC window sill, carefully study its certificate. What to pay attention to:

for PVC content (it should be at least 50%, preferably 60%);
by the percentage of chalk content (no more than 5% is acceptable);
the thickness of the stiffeners must be at least 1.2 cm and no more than 3.5 cm;
The thickness of the panel itself is from 2 cm.

PVC panel “wood look”

The most durable panels are produced in Germany. Russia shares second place.

The truth is in size - choosing the optimal parameters

Installing a plastic window sill with your own hands should begin with careful measurements. How to choose the optimal parameters? Based on the following conditions:

Depth. On average, this figure ranges from 20 to 50 cm. There is only one rule: the narrower the panel, the more reliable and stronger it is. And, the more weight it can withstand when pressed.
Width. To paraphrase the classic, even the window sill has “ears”. This is the name given to the projections on the sides of the window. They are necessary, firstly, to fix the slopes. Secondly, to compensate for the thermal expansion inherent in plastic. And thirdly, for a more finished and aesthetic appearance of the window.

Measurements should be taken from concrete base.

Advice! When measuring the depth, add 15 mm for the entry under the frame and 50 mm for the extension. This optimal sizes window sill.

Window sill dimensions

Correct location:

install at least 10 cm from the radiator (battery);
the panel overhang should not block the heating source by more than ⅔;
the window sill board should not be at an angle of 90° to the window - an inclination of at least 1° into the room is required.

Installation Process - Step by Step Guide

The correct sequence of work and compliance with technical nuances are a guarantee of the quality of the window sill. The process of attaching to a plastic window is not complicated and does not take much time.

Sequence of work - how to avoid mistakes

At what stage of the renovation is it most appropriate to install a plastic window sill? The correct answer is immediately after installing the windows, before finishing the internal slopes.

If you install it later, the slopes will have to be partially or completely redone. After all, for installation you will need to select grooves in the slopes. It is not recommended to remove from the plastic board protective film until all repair work is completed.

Advice! When installing a window sill protective covering must not be completely removed. But only in those places where the panel fits into the grooves (near the frame and on the sides). If this is not done immediately, the film will be difficult to remove completely.

Groove for installation in slopes

Preparatory stage - creating a strong support

How to properly install a window sill on plastic windows:

If you install the window yourself, form installation seam made of foam under the frame. A seam larger than 8 cm should be foamed in several passes with an interval of 7 minutes. And after hardening (after 20 minutes), install a vapor barrier tape on top. If the window installation is carried out by craftsmen, this stage must be completed by them.
How to install a window sill if the window is already standing? Select grooves on the sides of the window opening (from 10 to 60 mm depending on the size of the “ears”). If you need a grinder for this, it is better to cover the double-glazed windows with cardboard sheets during the work. Since flying sparks can damage windows (melt plastic).
Screw 51 mm support screws into the support profile under the frame. They should be located at a distance of 17-19 mm from its lower edge. This technique will increase the maximum pressure that the structure can withstand.
If the window sill distance exceeds 40 mm, it should be increased with plaster. After all, at this size the foam will not completely polymerize. Which will lead to a decrease in its supporting and thermal insulation characteristics.
Next, you need to thoroughly clean the window sill using a construction vacuum cleaner or brush. And also - prime the rough surface. The point here is in the features of the polyurethane foam. For adhesion to the surface, the latter must be wet. The primer also further increases adhesion.
Measure the surface and, if necessary, adjust the plastic board to size. The end should not be placed close to the wall. You need to leave 1 cm for thermal expansion.
Place support points in increments of 50–60 cm. To do this, fold the plastic wedges into a “jack” and rewind with electrical tape or masking tape. For reliability, you can grab the support points with self-tapping screws, since during installation you need to be careful not to move them out of place.

Advice! If some of the liquid gets on the glass during priming, you need to wipe it off immediately. Since when it hardens, the composition forms a film that is difficult to remove.

Stand profile – 16

Fixing the window sill - the secrets of proper installation

How to install a window sill to a plastic window:

Check the window sill for voids in the foam. If gaps are found in the wall, foam them to prevent the windows from freezing.
Install the window sill into the profile with force. Align it centrally so that it has a 2-3 mm slope from the level into the room for every 20 cm of depth. This is necessary for moisture to drain out.
Foam the space under the window. Place a load on top (for example, 5-liter bottles) around the entire perimeter. The foam tends to expand, squeezing out the board. To prevent this from happening, a load is needed.
Install end caps.
Apply a layer of sealant to all cracks.
After the foam has completely hardened (about 12 hours), remove the load.

How to prevent foam squeezing

Professional advice - how to get the perfect result

How to install window sills on plastic windows - secrets of the craft:

If the window sill overlaps the battery, you need to cut a hole in it across the entire width. And then muffle it with a grill.
To overcome window fogging, you need to use the principle of directional airflow. To do this, cut through the plastic (in the center of each glass unit) round holes. This can be done using a special crown. Then install round gratings in the places where the cuts were made. This will normalize the airflow and prevent condensation from collecting on the windows.
If a deep window sill is needed (for example, for a sofa on a window), you will need to install additional support. It is better not to use brackets in this case, since the plastic is fragile when bending. The best option– make an imitation of a fireplace portal by laying out the walls on the sides of the radiator.
The window sill board must withstand a load of at least 30 kg per 1 sq. m. But attaching the window sill to a plastic window must withstand point loads of up to 100 kg. After all, when wiping the window, the owners lean on the plastic with their entire weight. To do this, you need to lay support points under the board. These can be pieces of wood treated with an antiseptic, plastic wedges, etc.

Attention! The back of the window sill is the most vulnerable. It bears all the load when washing windows. Therefore, tight pressure is necessary to increase the strength of the structure.

Directional glass blowing

Window sill on a loggia - Spanish installation method

The classic way to install a plastic window sill on a loggia is based on next rule. The window sill board should be mounted in last resort. As a result, to do this efficiently, a lot of measurements and adjustments are required. This leads to colossal losses of time and effort.

The Spanish method allows you to reduce installation time by 4 times! And the strength of the structure will be made 2 times higher. What is its essence? The point is that the window sill should be installed at the very beginning. And then attach the guides from there. This significantly reduces the number of measurements.

The installation process looks like this step by step.

IN plastic frame screw in 51 mm self-tapping screws at a distance of 3 mm from the bottom edge of the special support profile.

Screwing in the clamping screws

Install a window sill between the screws and the frame. How to attach a window sill to a plastic window? Fix it to the frame with 71 mm self-tapping screws at an angle in several places. The insertion depth of the screws is 1–2 mm. This is necessary to prevent the structure from falling out.

Attaching the window sill to the frame

Attach an upper guide made of timber 40 mm wide to the bottom of the plastic board. Secure it with 51 mm self-tapping screws. The distance from the “spout” of the window sill to the top guide is 8 mm. This distance is necessary for installing cladding panels.

Installing the top rail

Using a plumb bob, install the bottom guide. Use self-tapping screws to secure it to the floor along the edges. Align the lower guide with a level and fix it with self-tapping screws to the floor in increments of 50 cm.

Installation of the bottom guide

Attach vertical guides (slats) to the top and bottom rails.

Fixing vertical slats

Level the board with a square (at 90° or tilted inward 2–3 mm from the level). Screw the 71mm screws in completely.

Leveling the window sill using a square

Attach the middle guide to the vertical slats.

Fixing the middle frame

Skillful hands - two ways to make them yourself

Save on your purchase plastic panel is quite real! To do this, you can go the following ways:

Install a concrete window sill. To do this, make permanent formwork and pour the first layer of concrete. Next, install the top removable formwork. Lay a 1.5–2.0 mm wire mesh with a mesh size of 50x50 mm. This will help strengthen the structure. Then pour the concrete and sand it after drying. You can lay tiles or mosaics on top.
The second way to make a window sill yourself is to glue it together from a floorboard. To strengthen the structure you will need dowels. The board must first be sanded and primed, and then varnished in several layers. It is better to install such a window sill using liquid nails.

Advice! For growing flowers on wooden structure It is better to use special pads. They can be glued to wood.

Decorating a window with your own hands is both simple and difficult. On the one hand, this does not require serious skills or special tools. On the other hand, it will be quite difficult to correct the mistakes made. Therefore, it is still better to entrust the installation of window sill boards to professionals!

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 support for various interior items (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:

Resistance to sunlight, high and low temperatures and humidity;
Resistance to impacts, scratches, pressure and other types of mechanical impact;
Lightness – compared with wooden product 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. Great importance has the form of an equipped opening - 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 houses old building under the 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 proper strength is achieved after 1-2 days. The installation of PVC window sills should begin 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 “extension” 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 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 with force 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.

When the polyurethane foam hardens, it increases in volume, and the window sill may rise and become deformed. Therefore, before foaming the window sill space, the panel is loaded using any available weights - containers with water, books, collapsible dumbbells. They will hold it in place, and the foam will be squeezed out along the entire length. Excess frozen foam is cut off with a knife and the final finishing is carried out.

After installing the window sill, all detected gaps and cracks in the area of the slopes and at the bottom of the window are eliminated using silicone sealant. It is applied in a thin strip and compacted by running a finger over the top. Excess is promptly removed with a damp cloth. After drying, it will be more difficult to do this, and the result will be less accurate.

Also remove excess dried foam, cutting it off with a stationery knife to a depth of 1 cm. Next, the surface under the panel and the detected voids large sizes filled flush with the wall with ordinary plaster. Using glue for PVC products, install plugs at the ends of the window sill. At the end of all the work, after the final finishing of the slopes, all that remains is to remove the protective film.

As you can see, installing a window sill on your own does not require special skills. The only significant obstacle may be the lack of the necessary tools and the purchase Supplies(their remains may no longer be useful). Accordingly, the costs will be higher than the services of a qualified specialist.

Instructions for installing a plastic window sill

Materials and tools:

PVC installation window sill.

plastic profile;
bars;
wedges;
metal strips;
sealant;
polyurethane foam;
special glue;
building level;
pencil;
jigsaw;
saw;
drill;
spray foam gun;
staples;
self-tapping screws

First you need to prepare materials for work. Then you need to take the necessary measurements. In this case, take into account the properties of the PVC profile and the height of the heating radiator. If the distance between the window sill and the radiator is too small, this may impair air circulation.

The length of the model should be several centimeters greater than the width of the window. When choosing the width of the model, you need to take into account that the window sill deviates from the plane of the wall by no more than 8 cm. If the product is too wide, this may disrupt the air circulation between the radiator and the structure.

Then the structure is trimmed. You can order a ready-made exhibit that has standard dimensions, or cut it out yourself from a PVC profile. In this case, you need to leave a margin of about 5 cm. You need to check if there are any defects on the product. In some cases, the model may need to be trimmed to fit the size of the window. To do this, first mark with a pencil.

Plastic models can be up to 3 m long. The width of the model is usually from 25 to 75 cm. If the product has a wider width than necessary, it is cut on the side that is mounted to the wall. The cut line should pass 1 cm further than the stiffening ribs located inside the model.

The product must be cut with a jigsaw or saw. At the same time, make sure that no cracks appear. Cutting work is carried out wearing protective gloves.

Then they move on to the next stage of work - installation of the lining. This work is done using bars. They are placed under the windowsill. The entire load from the product is transferred to the bars. If the product has cracks, they are filled with polyurethane foam.

Then you need to check whether the product fits firmly enough to the frame. Next you need to cut down the slopes to the wall. The installation site of the structure is cleaned of dirt. Secure the wedges on which the window sill is installed. The wedges should not protrude beyond the wall level. The product is installed in the groove. The structure must fit closely to the window frame. The gap between the wall and the product cannot exceed 4 mm. Part of the structure protruding beyond internal slopes, should be adjacent to the wall without gaps.

Metal strips are installed under the structure, which go into the lower plug of the window sill. This is necessary in order to ensure the strength of the product. Then the structure is installed in its place. To do this, the product is first leveled and then secured. Mounting the model can be done in several ways, which were described earlier. The length of the product must be greater than the distance between the slopes.

Return to contents

Installation work

The first step is cleaning. It is better to do it using a construction vacuum cleaner, since brushes and brushes are not able to remove all the dust.

For good adhesion of foam to other materials, moisture is necessary. Therefore, it is recommended to moisten the surface with water. But you can go further and kill two birds with one stone. You should not use water, but a primer. This way it will be possible to remove any remaining dust and also provide the necessary moisture. You can apply it with a brush, but it is more convenient to do it with a hand sprayer. If you use the latter, then cover the windows with something or wipe them immediately. If you let the impregnation dry, then you will have to remove it later with consequences.

It's better to use a primer

The window sill is being marked. Its total width will be the width of the opening plus 10 cm (this overlap is necessary to provide 5 cm for each “ear”). The depth will be equal to the distance from the window support to the middle of the heater, if it is located under the window. It's better not to close it completely. If you do this then warm air will not reach the glass, and they will fog up, which will lead to the accumulation of condensation and the growth of mold and mildew. If there is no battery and radiator, then the protrusion can be made by 5 cm. In some cases, at the request of the customer, an even larger protrusion is made. Perhaps the space will be used as an extension of the desktop or in some other way. In this case, it is necessary to install metal corners as supports. Their base is recessed into the plaster. The length of the window sill is adjusted taking into account that the edges will be recessed into the wall by 1 cm.

Peculiarities PVC installations window sill

Using a hacksaw for metal or an electric jigsaw, trimming is carried out.

Wooden wedges for plastic windows

Next, you need to prepare supports on which the plane will rest. Special plastic plates are often used, but they may not provide the necessary rigidity. Instead, you can use parts of the cut window sill. They should be placed every 40-50 cm. They are set using a building level or using a level (when using the latter, a line is projected and measurements are taken from it at both ends to the supports, the distance should be the same). Their height should be such that the window sill fits right under the bottom of the frame and rests against the installation bar. In order to prevent them from moving during the process, you can fix them with self-tapping screws. If the platform is made of aerated concrete, then you can simply screw it all the way through with self-tapping screws; in the case of brick, you will have to use a hammer drill.

PVC window sill installation diagram

You can go the other way and install the supports not across, but along the window sill. They can be made from plaster beacons. In this case, there will be more emphasis, which will definitely eliminate deflections and creases.

Window sill leveling

Using a gun and polyurethane foam, cracks that may exist under the window are sealed. You need to pay special attention to the corners. There are times when everything is installed beautifully, but there is a draft from below, which is an indicator of inattention.

Fixing

Plugs are mounted on the window sill, and it is tried on in its place. If there are no gaps between it and the window, then you can continue installation. If the gap is large enough, it is necessary to raise the supports; with its minimum values, you can count on the foam to compensate for the gap. Until the repair is completely completed, there is no need to remove the film; it will be enough to lift it in those places that will be hidden in the wall and under the window.

View of the window sill from below

If the supports were mounted lengthwise, then the main layer of foam must be applied before the window sill is installed in its place. If across, then blowing can be done in several stages. Before installation - the part closest to the window. Then walk along the middle line, and then along the edge.

Filling the gap with foam

For a day, the plane must be pressed down with a weight. To do this, you can use books, eggplants with water, dumbbells (but it is advisable to make a lining for them from a durable material), etc.

Fixing a plastic window sill

After polymerization and drying of the foam, its excess is trimmed off. Moreover, under the window sill it needs to be cut flush by about 1 cm so that this space can be easily puttied and the applied material has a sufficient layer.

Seal the seam under the window sill with cement putty

How to mount a window sill

All window sills are installed according to general principle. Since plastic window sill boards are often preferred for DIY installation, we will describe in detail step-by-step instructions specifically for PVC window sills, noting at the end the features of installing structures made from other materials.

Window sill width and length

Before buying materials, it is necessary to correctly measure the place where the window sill will stand. The length of the window sill is determined as follows:

measure the width of the opening near the window and on the side that is closer to the room and turns out to be longer;
to the maximum width of the opening you need to add at least 1 cm on each side in order to hide the edges of the board into the slopes;
if the window sill sticks out and is not flush with the wall, then you also need to take into account the eyelets. Window sill parameters Window sill parameters

To determine the width of the window sill, you need to measure the width of the wall to the window. To the result obtained, add 1.5 - 2 cm to deepen the board into the window groove. This width is sufficient if you plan to install flush with the wall, which is feasible for smooth walls.

Quarter window measurements

Note! When the walls are uneven, it is recommended to measure them on both sides of the window. This will allow you to adjust the window sill and install it evenly

You can provide a protrusion, the size of which should not exceed 8 cm, so as not to interfere with the convection of air from the battery. After all, this will not only disrupt the uniform distribution of heat in the room, but also in cold weather will lead to damage to the window as a result of the formation of ice.

In accordance with the measurements obtained, the window sill is adjusted according to required length and width. Now you can begin installation.

Removing the old window

Fastening windows and sills

Window sill installation

Step 1. Try on the future window sill at the installation site. Trim the board if necessary.

Note! It is recommended to cut plastic and stone with a grinder; a jigsaw is more suitable for wood, MDF and chipboard.

Step 2. Use a hammer drill to make grooves in the walls if necessary. The edges of the window sill will go into these recesses.

Preparing the opening using a hammer drill

Cutting the window sill to size

Step 3: Clean the installation surface from dust and debris.

Step 4. The window sill is inserted into the groove of the window profile, having first removed the protective film from the inserted edge.

The window sill is inserted into the groove of the window profile, having first removed the protective film from the inserted edge.

Step 5. Wooden wedges are placed under the window sill, starting from the outer ones and ending with the central ones. The substrates should not protrude beyond the walls and the inner edge of the window sill. Maximum distance there should be 40 cm between the wedges.

Foam with low-expanding foam

Step 6... If there are deviations from the horizon, then correct with the help of additional wedges.

Align the window sill to the spirit level

Note! The board should have a slope from the window to the inner edge of approximately 0.2 cm. This measure will prevent the accumulation of liquid near the window: the water will simply drain.

Flush wall installation

Step 7. Place a weight on the windowsill. The total load should be 10-20 kg.

A load is placed on the windowsill

Step 8. After we have additionally checked the horizontal position of the window sill board, we begin to secure it. For this purpose, polyurethane foam is used. It is better to take professional foam and a special spray gun. Additional fixation to the window profile is carried out from the outside using self-tapping screws.

Foaming the window sill

Note! When foam gets where it shouldn’t be, it is removed immediately with a cloth. If it has already hardened, you can wipe off the foam using special solvents.

Step 9. After 24 hours, remove the weight and trim off excess foam.

Now you can install the plugs at the ends and remove the protective film.

If you decide to install a wooden window sill, then on the inside of the board it is necessary to attach felt that has undergone antiseptic treatment using shingles. The ends of stone window sills are also protected with a felt layer before installation. Otherwise, the installation follows the same principle as for plastic products.

Installation of window sills

Thus, installing a window sill is not difficult, especially if we're talking about about a plastic board. The main thing is to maintain precision in alignment when working and not to overdo it with polyurethane foam.

Video - Window sill installation

Style and design

Because the metal-plastic windows are often white in color, then PVC window sills were originally 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 structures in wooden house, which will not stand out externally, but fit into the concept of the building.

For the production of such products it is used laminated PVC films under the tree. 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 of a panel house, which is why different window sills are needed. 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.

How to wash a windowsill

When common home remedies such as: soap, soda, vinegar, tooth powder, chalk turned out to be powerless in the fight against pollution, special ones will come to the rescue chemicals. A selection of modern household chemicals will be able to cope with any contamination on a plastic surface. You only need to correctly formulate your problem to the sales consultant in the household chemicals department, emphasizing that you need a product to clean plastic.

Careful operation and regular maintenance will help avoid problems associated with washing complex stains. The main thing is not to use metal scrapers and abrasives: they leave scratches in which dirt then accumulates.

As a decoration for the adjacent space, you should consider a waterfall, an alpine slide, a fountain, a fence, a flowerbed of stones, a trellis, a rose garden, a mixborder, a dry stream.

It's up to you to install the window sill yourself or use the services of a specialized construction team. In fact, the process of installing a window sill is not complicated, but it requires the availability or purchase necessary tools, consumables (the remainder of which may no longer be useful) and work skills. If the first attempt to install a PVC slab with your own hands is unsuccessful, then the total cost of self-installation may turn out to be much more than the wages of a specialist.

Video: how to install a window sill with your own hands

What is window sill board made of?

The materials from which window sills are made today can be different. The type of window sill board determines the method of its installation.

Wooden window sills

Wood, for example, oak, cherry, pine, has long been the most common material from which window sill boards were made. Wooden window sills do not lose their connoisseurs to this day. The wood is pre-dried and treated with antiseptic solutions and varnish.

Wooden window sills

The main advantage of a wooden window sill board is its natural origin and noble appearance. But such material is expensive, and solid wood products are subject to deformation. To preserve the window sill, you need to protect it from exposure to abrasives, water and aggressive chemicals, and also periodically renew the coating.

Wooden window sills

Boards made of laminated veneer lumber are less expensive and more resistant to external influences if they are made in compliance with the technology.

Chipboard and MDF

As a cheaper alternative to wood, many companies produce window sill boards made from chipboard or fibreboard. The products are covered with a special film on top. MDF is a more durable and moisture-resistant material compared to chipboard. If the integrity of the film is damaged, water that gets onto the slab from chips can lead to swelling and significant deformation. MDF is more expensive, but more stable.

Window sills made from wood chips or fiber are very easy to clean. The main thing is not to use abrasives.

Stone products

Window sill made of stone

Connoisseurs of natural materials often prefer stone window sill boards. Most often it is granite or marble. Stone products are beautiful, each window sill has a unique pattern. But this pleasure is not cheap.

In addition, it is easy to leave scratches on polished surfaces of natural stone. Stone window sills easily absorb dirt, such as coffee, wine or tea stains. And their thermal insulation is weak. Due to the high cost and heavy weight, it is better to invite professionals to install a stone window sill.

Marble window sills

An alternative to a natural stone window sill is a board made of artificial stone acrylic based. Such products are not inferior in strength, heat resistance and beauty, but at the same time they are cheaper and do not scratch.

Plastic window sills

PVC products in construction are becoming increasingly popular every year. This also applies to plastic window sills, which have a whole list of advantages.

The top of the window sills is covered with a laminating film, which can have different colors and patterns. This allows you to choose a product in accordance with the overall decorative line of the room.
Plastic is resistant to moisture and is not a breeding ground for microorganisms, including mold, which is especially appreciated by indoor plant lovers.
Modern plastic window sills, thanks to special stiffening ribs, withstand mechanical loads well.
These products are easy to wash.
Do not deteriorate their qualities from exposure to direct sunlight.
They are not afraid of temperature changes.
Excellent heat retention.
Easy to install yourself. Plastic window sills with wood texture

PVC window sills also have disadvantages:

non-natural origin of the material;
the laminating film, which plays a decorative role, can peel off and be easily scratched;
High temperatures, such as a hot pan, can cause the window sill to warp.

However, plastic window sills are most often used for installation on their own.

Plastic window sills

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 attach 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 of the appropriate size, the 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 the convenience of 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 process of fixation, when you can fix the window sill using polyurethane foam, which will provide excellent performance characteristics.
The use of plugs, which can have different shapes. Depending on the design features window sill, they can be without ears, if the thickness of the product is quite large and there is a desire to make it look like a stone monolith, or with ears when 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 a utility knife, and then apply a layer of tile adhesive, which must be puttied when dry. Only after this can the surface be painted or wallpapered.

PVC window sill markings

Following the technology for installing a turnkey plastic window, the plastic window sill should be installed after the plastic window has already been installed. In the previous article, I already said that the ebb and window sill are installed at the same time.

In order to understand how to install a window sill on plastic windows, you need to understand that the most important operation in this process is marking the PVC window sill. Next, step-by-step verified instructions with photos, and my video is at the end of the article.

First, take a sheet of paper and a pencil. We draw a window in a section along the width, in a simple way, in the form of an elongated rectangle. View from above. And enter the value of the window width into our rectangle.

Secondly, we find the starting point of the marking. This is done as follows. We measure the length of the window sill. We write the value above the rectangle. We get two numerical values in a column that need to be subtracted. Like at school, in first grade))).

We divide the resulting difference in half. And we get the main number, which determines the starting point for marking the PVC window sill. This figure is equal to the distance from the edge of the window sill to the edge of the frame on each side.

Thus, after installing the window sill and slopes, we will have the same:

The side projections of the window sill are the “ears” and
Dawn angles of slopes

Thirdly, continuing the marking, we take two bench squares (90 degrees) with a scale - 30 cm and 50 cm. Next, we place the first large square with one side against the window sill profile, and with the other side, perpendicular, we press it against the wall, leaving a small gap. The main thing is to understand that the position of the square is the future position of the cut-off window sill. All that remains is to take the first measurement along the length of the window sill, and write down this size on our sheet of paper, on which the starting point of measurement has already been determined.

Fourthly, using a second square, pressing it against interior wall premises, fix the second size according to the width of the window sill. After which, the last cutting line of the side protrusion is automatically obtained.

Dimensions are taken similarly on the right side of the window sill.

After which the markings are applied to the window sill itself.

This markup that we looked at is the simplest. It is made in a flat perpendicular opening.

It happens that the opening has a step configuration, then it is necessary to take several measurements. But the principle of marking does not change.

Fifthly, if the opening has an angle, then the marking of the PVC window sill is carried out at an angle. To do this, just as in the first case, we press one side of the large square against the window sill profile, and direct the other perpendicular side at an angle. Let's imagine that this will be the corner cutting line. And we place the second square against the inner wall of the room. The point where the squares intersect is the end point. Let's fix its value. Next, leaving the second small square in a stationary position, we again attach the large square to the window sill profile at 90 degrees. We fix the second value at the intersection of the squares.

Thus, the PVC window sill is marked. It must also be said that the cutting line of the side protrusion can be either flush with the inner wall of the room or recessed into this wall. This depends on whether the customer will make repairs after installing the window.

Marking

Of course, before you install the window sill, you need to mark it. We measure the width of the window block, let it be 140 cm. We will buy a window sill 15-20 centimeters longer, since it should extend beyond the plane of the slopes by 7-10 cm (this is a matter of taste). So, we bought a 155 cm one. Let's put it aside for now.

Let's take a close look at our window opening:

Everything is fine with us, the foam layer will be about 2-3 cm. If you get more, it would be better to raise the lower “slope”, for example, with a self-leveling floor. This way the structure will be stronger (my personal opinion). Shortly before installation, the surface will need to be primed, do not forget.

Window sill markings

Next, we must find the exact middle of the window (we have 70 cm from the edges) and, accordingly, the exact middle of the window sill (77.5 cm). In addition, we draw their central axes with a pencil. It is from them that we will set aside all dimensions so that the final result is symmetrical. As the article progresses, you will understand what I mean.

Now let's take measurements. There are four of them to remove in total, I labeled them A, B, C and D.

A - approximately equal to the width of the window block, perhaps a little more if space allows; but no less.
B – distance between the corners of rough slopes. As a rule, it is several centimeters larger than A.
B is the distance between the far edge of our hero and the plane of the wall.

Under the window block there is a special groove about 2 cm deep, where it goes. You need to measure from the groove, and not from the plane of the window, be careful. Here it is also highly desirable that the wall with the window is already plastered. Let's hollow out some plaster under the “ears” and measure B so that they start “inside” the plane of the wall.

All the cut edges will then simply be covered with slopes and a wall.

G is the total width of the window sill.

It is selected in such a way that it covers vertically no more than half the thickness of the radiator under the window.

Otherwise, in cold weather, condensation will form on the windows, since warm air from the radiator will not reach the glass. Usually the protrusion is 5-7 cm; it is not advisable to do more. Installers very often make this mistake.

Marked window sill

This is what our window sill will look like after marking:

Cut off window sill

And after cutting it like this:

Fitting

We try it on in place, insert it into the groove, manually set it approximately level, and inspect it for jambs:

Everything is in order here, you can adjust the height of the window sill. Since ancient times, wooden wedges have been used for this, but in general, anything can be used as supports. This time I conducted an experiment and used not wedges, but ordinary self-tapping screws, which I aligned with the laser.

It must be said that the experiment was only partially successful. The near edge was aligned easily and quickly, but difficulties arose with the far edge (the one that fits into the groove). After all, who installs windows in our country? That's right, Uncle Vasya. And I didn’t take into account that the windows, in fact, may not be strictly horizontal and may even bend!

I had to put improvised materials under the far edge, namely Penoplex insulation. It is necessary to ensure that there is no noticeable gap between the window sill and the window, that is, it must be pressed tightly against window block below.

It may be that the window goes in an arc. In this case, you need to choose the least evil. In my opinion, the main thing is the absence of a gap, and the unevenness of the surface is not particularly noticeable to the eye.

There are two requirements for the near edge: it must be strictly horizontal, and it must be lower than the far edge, that is, the window sills are placed at a slope.

The slope is usually 5-10 mm per meter. That is, for a window sill with a thickness of 60 cm, the near edge should be located 3-6 mm lower than the far one. This bias is invisible to the eye.

And it is done in order to prevent puddles, for example, when watering flowers. The water will flow down. Basically, if you don’t want to do the slope, don’t do it. I'm just describing a general case. If you use wedges, push them behind the plane of the wall so that later they are out of the way and you don’t have to tear them out.

When setting the slope, it is more convenient to use not our product itself, but cuttings from it. Insert one end into the groove, place a level on the cut and evaluate the slope. Once everything is set, we once again insert the “patient” into place and see if there are any cracks and if the required slope is ensured:

By the way, the photo shows that, firstly, I partially tore off the film from the far edge. I think it's clear why. Secondly, I aligned the central axes of the window and the sill. We see that there are no cracks. If you use wedges, there is a possibility that they may become dislodged.

To prevent this from happening, you can coat them with gypsum mortar, for example, alabaster. Then they definitely won’t go anywhere.

We can start installation.

Preparing for work

Preparatory stage includes measurements future design, also all materials and tools, as well as preparation window opening to install a new window sill.

Before purchasing, you need to take several measurements, namely:

Window sill width. It is equal to the width of the window opening plus 10-15 centimeters.
Window sill length. Measured as the length of the window opening plus 10-15 centimeters.

It should be noted that a window sill that is too large and wide can significantly impair air circulation, therefore, water droplets will accumulate on the windows and their service life will be reduced.

Of the tools, you should prepare or purchase:

Jigsaw or grinder.
Level.
Hammer.
Angle-ruler.
Masking tape.

Materials you will need:

Construction foam.
Sealant.
End caps.
PVC panel of suitable size.
Plastic substrates.

Preparing the surface for installing a window sill

First, you need to remove the old structure. This is done using a jigsaw or hacksaw. Next, you need to remove the cement screed around the edges.

Clear the space of debris, loose material, insulation, and everything else. This will guarantee reliable fastening new window sill. It is best to vacuum the base under the window sill, this way you are guaranteed to reliably clean the base.

If you are planning to install a window sill with projections on the sides, then you should create small openings so that the panel fits in easily. First, a notch is made on the wall, then an opening is knocked out with a hammer the right size. The openings must be the same on both sides and such that the PVC panel can be easily inserted.

After cleaning the base under the window sill, it should be well primed to ensure adhesion of the solution to level the base.

Preparatory stage of work

Before proceeding directly to the installation, you need to prepare your workplace. To do this you will need the following materials and tools:

level;
jigsaw;
roulette;
hacksaw;
pencil;
polyurethane foam;
foam gun;
perforator;
drills for a hammer drill;
hammer;
chisel;
wooden blocks;
bit.

The window sill is installed so that it fits into the side wall, so you will need to cut connectors about two centimeters deep in the slopes.

To carry out this procedure, you need to attach the plastic window sill to the wall and make the appropriate marks on it with a marker, then carefully knock out the grooves. Such an operation requires maximum concentration and accuracy, otherwise it will take a long time to restore the slopes

Important! To ensure minimal damage to the slopes, they should be handled very carefully during the entire installation process. . Next we move on to making indentations.

The slopes are made of gypsum plaster. In this case, the procedure can be carried out using a hammer or chisel.
Concrete slopes. Then you can make recesses for the plastic window sill using a hammer drill.

After completing all of the above manipulations, you need to clean the stand profile and the lower part of the window from pieces of plaster and dust, since these materials are used to install the window sill. Then the cleaned surfaces are moistened; it is better to use a primer for these purposes, which strengthens the surface.

Note! In order to prevent drafts from appearing from the window, you need to thoroughly blow out all the cracks of the window frame with foam. .

Preparing the base

This step may take most of the time, but it is actually the most important in the entire process.

Let's see how the window is installed

It is important to assess whether there are any deviations from the horizontal plane. To do this, apply a level or run a projection from a laser level along the lower edge of the frame

In the future, the window sill will be aligned precisely along it, which can also lead to misalignment. If there are small deviations, then this is not a big deal; further on it will be described how they can be compensated.

We measure the width of the window opening. It is important to remember that the plane of the stand should be recessed into the slopes by 1 cm from each end, and the protruding part on the sides should extend beyond the opening by 3 cm or more.

We make grooves in the slopes where the ends of the window sill will go. The edge of the frame will serve as a guide in this regard.

Pay attention to the edge of the stand on which the window sits, namely the bottom edge of the frame.

In order to do everything correctly, you can use several methods. Using a laser plane builder, it is projected horizontal line to the opening. From this line along the window, a measurement is taken to the edge, and the value is recorded. Further, the same distance is laid off from the same line, but already on the slope. If there is no level, then you can use an ordinary level, which is placed close to the bottom line of the frame, aligned in the horizontal plane along the bubble indicator and a mark is made.

A straight line is drawn that will connect our mark and the edge of the frame.

Most likely, at the corners of the slopes there is metal corner. In no case should you try to knock it down with a chisel and hammer, as this can damage it completely. For this it is better to use a grinder. Simply make two small transverse cuts across its width. An incision is also made along the drawn line.

Slope preparation

Using a chisel or other suitable tool and a hammer, recesses of 1.5–2 cm are knocked out.

Next, you need to evaluate the surface on which the installation will be carried out. Attention should be paid not only to how uneven it is, but also to the distance from it to the bottom of the window. Ideally, it should not exceed 4 cm. This is due to the fact that it is at this thickness that the foam is best polymerized, which makes it quite dense and durable. If the layer size is large, then voids may form inside, which reduces the load-bearing capacity and can also cause drafts.

If the size exceeds 4 cm, it is necessary to reduce the gap. This can be done using improvised means. For example, you can build a small formwork from the rule and fill it with mortar. In this case, it will be easier to derive the required level. If the installation is carried out at a time when there are still remains of brick or foam block from the partitions inside the room, then the base can be laid out of them, and all the cracks can be sealed with mortar or glue. After this, you need to give it at least a day for everything to stand and set.

In the case when the level of the base will be raised using a foam block, it must be soaked in water for a short time. Due to its porosity, it absorbs moisture well, and if it takes too much of it from the solution on which it is placed, there will be no setting. Wetting saturates the foam block with moisture, so setting will occur as well as possible.

Preparatory stage and its features

At this stage, it is necessary to take measurements of the window sill and purchase material for self-installation.

Required tools:

Window sill installation diagrams when using a stand profile.

building level;
electric jigsaw or a file with fine teeth;
self-tapping screws;
electric or cordless screwdriver;
metal plates;
special linings (wooden blocks or very dense synthetic material);
mounting construction foam;
foam gun;
silicone

The system is sized using a tape measure. It should be 5-10 cm larger than the width of the window opening. It must be taken into account that if, when installing a wide device, it covers the heating radiator, then movement in the room will be disrupted air flow, the temperature will change. Therefore, the most acceptable width is the one that will allow it to protrude from the wall level by no more than 8 cm. The length of the product must exceed the distance between the slopes so much that the element can fit into it by 2-3 cm. In addition, it must protrude beyond the slopes by 5 cm.

The design itself can be different: smooth, ribbed, rough. It all depends on personal preference, appearance windows and interior style.

At the same stage, it is necessary to remove all debris from the bottom of the wall on which the window sill will be installed. If there are peeling elements of the plaster, they must be removed. If a fairly large gap has formed, it must be sealed with a solution. Further installation can be carried out after its final hardening.

The demand for PVC double-glazed windows has led to the fact that plastic windows have become the norm everywhere. Their excellent performance characteristics make it easy to achieve the desired indoor comfort. At the same time, it is important to correctly install a high-quality window sill on plastic windows. We will consider the instructions with photos and a step-by-step installation plan in more detail below.

Basic moments

The key feature of installing a window sill on PVC windows is the ability to do it yourself. The practicality of wear-resistant material lies in the following properties:

Neutral to moisture and ultraviolet rays;
Resistance to mechanical deformation;
Resistance to mold formation;
No painting required.

To enhance the above-mentioned properties, the window sills are additionally laminated using film. Before directly installing a new product, it is necessary to dismantle its predecessor, as well as prepare the opening. Let's look at each stage separately.

PVC window sill is practical and easy to maintain

Dismantling the old product

No special skills are required for dismantling. Of course, if you don’t count accuracy and perseverance as such. Since dismantling and subsequent installation of the product always entails damage to the cladding. This is due to the fact that they are masking behind it anchor plates for fastening. That is why the work requires devices to get rid of old layers of plaster. You will also need a hammer and screwdriver. The sequence of actions at this stage will be as follows:

The first step is to unscrew the screws holding the anchor fastenings;
Then the mounting foam is removed, which generously insulates the lower surface of the window sill (to do this, you just need to tap it with a hammer);
Now the product can be easily removed from the window. If you cannot get it, then you should look for the secret in the far corners of the opening. There is probably another fastening hidden there. It also needs to be dismantled. To do this, the glass unit is removed from the opening and carefully examined. window profile for the presence of screwed-in screws. After unscrewing them, you can begin preparing the opening.

Preparing the opening

To properly equip the window sill, the opening must be thoroughly cleaned. This will require a primer and putty. The sequence of actions will look like this:

If there are deformations on the lower slope, it should be leveled. The putty fits perfectly. To continue preparation, you will need to wait for it to dry completely.
In order to prevent the formation of fungus on a plastic structure, you can use a primer composition as an antiseptic;
When replacing a window sill in an old house, you should take care of the waterproofing layer. To do this, special mastic is applied to the slope. It must also be completely dry before installation work can continue.

Window sill installation diagram

Window sill installation

Before installing the window sill, make sure that the foaming of the window frame is completed high level. Then you need to check the slopes located in the opening.

Attention! The installation of the window sill should be carried out an hour after the installation of the double-glazed window.

When choosing a window sill, you should focus on its width. It must be optimal so as not to disturb the natural convection of air. Often the distance from the edge of the wall to the window frame is taken as a basis. Add about 8-10 cm to the resulting value.

Step by step instructions

To install the product in the prepared place, the master will need protective pads, a gun with foam for foaming, and also pads. The sequence of actions is as follows:

The dimensions of the product are adjusted to the required size. This is done by trimming or using protective covers. The latter can easily increase the dimensions of the window sill by several centimeters;
Then you should install the window sill board to the required height. It should correspond to the same value at which the window itself is located relative to the lower slope. For this purpose, pads made of one material or another are used. Usually a few pieces are enough to secure the window sill under the profile. It is important to use building level so that a straight line is maintained;

Attention! Use a pencil to make a mark on the inside of the window sill. At the point where it intersects with the edge of the opening.

Due to the popularity of double-glazed windows, you can find many photos and detailed instructions on how to install them online. An equally important role is played by the installation of window sill boards, since it prevents the appearance of drafts and fungus. Its installation is carried out in stages. It is important to follow the sequence of actions.

Video: Installation of PVC window sill

The internal window sill is an integral part of any plastic window. This design is needed in a home for additional insulation the junction of the window frame and the wall, as well as to ensure that the window has a finished look. It has the following advantages over other materials:

wooden structures require constant maintenance and also become damaged quite quickly;
stone window sills are characterized by rather difficult installation, which is unrealistic;
plastic structures are reliable, durable, beautiful;
have a long service life;
are easy to install;
plastic sheet is moisture resistant;
the material has an affordable price;
plastic is resistant to chemicals;
the material is plastic and light in weight, it is easy to cut and install with your own hands;
the canvas has high thermal insulation;
you will not need for installation special devices, you can get by with improvised tools.

In this article we will talk about how to properly install a plastic window sill on a window, since such structures are Lately are especially popular.

Preparatory stage of work

Before proceeding directly to the installation, you need to prepare your workplace. To do this you will need the following materials and tools:

level;
jigsaw;
roulette;
hacksaw;
pencil;
polyurethane foam;
foam gun;
perforator;
drills for a hammer drill;
hammer;
chisel;
wooden blocks;
bit.

The window sill is installed so that it fits into the side wall, so you will need to cut connectors about two centimeters deep in the slopes.

To carry out this procedure, you need to attach the plastic window sill to the wall and make the appropriate marks on it with a marker, then carefully knock out the grooves. Such an operation requires maximum concentration and accuracy, otherwise it will take a long time to restore the slopes.

Important! To ensure minimal damage to the slopes, they should be handled very carefully during the entire installation process.

The slopes are made of gypsum plaster. In this case, the procedure can be carried out using a hammer or chisel.
Concrete slopes. Then you can make recesses for the plastic window sill using a hammer drill.

Read also: Finishing window slopes with sandwich panels.

Note! In order to prevent drafts from appearing from the window, you need to thoroughly blow out all the cracks of the window frame with foam.

Fit to size

Installing a window sill with your own hands is not a complicated procedure that requires minimum costs funds and time. However, each window frame has its own characteristics: bulges, roughness, cracks. Therefore, before installation, if you have a ready-made canvas, you need to cut out a blank for the window sill from it. To do this, calculate the width and length of the future structure.

It should be understood that the length of the canvas should be slightly larger than the width of the window, and may extend beyond the boundaries of the slopes. Basically, this output value is five or six centimeters.

The width is calculated by the formula: the width of the protruding part of the window sill + the depth of recess of the canvas into the stand profile + the width of the surface under the window sill.

You also need to cut rectangles on the sides of the plastic blank, which allow it to easily enter the slope. Cutting plastic is quite easy. To do this, use a hacksaw, grinder or electric jigsaw. If nicks appear when cutting the material, then there is no need to worry, since all defects will be hidden by plastic overlays.

When the blank is made, it needs to be tried on. To do this, place the plastic blank on the surface of the window sill and place it behind the slopes and the support profile. At this stage, it is necessary to eliminate all inaccuracies in measurements, if any.

Installing a window sill horizontally

Before final installation plastic window sill, the canvas must be leveled. To do this, pads are placed on the surface of the base. This operation is quite easy to perform yourself. For a regular window you will need two linings, and for a balcony - three.

The wedges must be placed strictly at the level of the window; this procedure makes it possible to properly level the window sill blank before installing it. Then you need to set the optimal angle of inclination. This manipulation is required to eliminate condensation naturally. To do this, the edge of the slab is lowered a few degrees, and the slope angle is measured with a building level. In order for the opening to be smooth, these parameters should be checked in the middle and along the edges.

Read also: Insulating wooden windows for the winter

You need to adjust the level using pads. For wedges, it is better to buy special plastic elements in advance, but you can also use wooden beams. The plastic window sill must be installed in such a way that there are no gaps between the canvas and the window frame. For this purpose, pressure plates are used. Which are attached to the stand profile.

Installation (foaming) of the board

In order to properly secure the window sill yourself, you must perform the following steps:

Moisten the bottom of the opening and the slab again.
Clean the part of the canvas that will be installed under the slopes from the protective film.
Then, using mounting foam, blow out the gap between the profile and the lower edge of the opening.
Then apply a wide layer of foam to the entire surface of the base, especially carefully treating the far corners. At this stage, you need to take into account that the thickness of the foam should not exceed the thickness of the installed wedges, otherwise, when the material hardens, it can greatly lift the plastic window sill.
Next, to evenly distribute the load, you need to place a load on the plastic window sill. It is recommended to do this on the inner edge of the board.
The window sill is installed, now all that remains is to wait until the polyurethane foam dries.

Installing a window sill on a balcony

Nowadays, it has become popular to install not only windows, but also balcony structures from plastic. This material retains heat well in the apartment and saves usable area. However, it should be understood that the installation procedure itself is quite expensive pleasure. Therefore, many residents multi-storey buildings carry out the procedure independently.

Before you start replacing the plastic window sill, you need to prepare metal brackets. They are necessary if it is not possible to place the canvas under window frame. The brackets are fixed to the parapet using anchors, which increase the load on the PVC board and strengthen the entire structure.

Install the brackets at a distance from each other that does not exceed one meter. After installing the panel, you need to check the angle of inclination with a building level. Before fixing the fabric holders, you need to tighten the thread well. This operation makes it possible to level the PVC board horizontally.