Installing a window sill on plastic windows yourself. Installing PVC window sills with your own hands - quick and accurate installation. The truth is in size - choosing the optimal parameters

Nowadays they are gaining more and more popularity plastic products. This material is quite practical and reliable, and also not expensive. If you decide to change wooden windows for plastic ones, and you don’t want to overpay for installing a window sill, or you just want to install a window sill with your own hands, then this article is just for you.

The 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.

Please note that it is too large and wide window sill 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 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.

If you are only planning to replace the window sill, and the windows remain old, then the width and height will be the same as the width and height of the old wooden window sill. All you have to do is remove it and transfer the measurements to PVC panel. If they plan to change the windows or new windows have already been installed, then the dimensions of the window sill are calculated again. It is important that the window sill is installed only after the installation of the new windows has been completed. When taking accurate measurements before cutting, it is important to take into account that the window sill should extend 10-15 centimeters under the window frame, and the protrusions on the sides should not exceed 5 centimeters. The window sill should be made at an angle so that absolute altitude under window frame and the height at the periphery differed by 2-3 millimeters.

Installing a PVC window sill with your own hands involves cutting the material. PVC cutting can be ordered from hardware store or do it yourself using a jigsaw.

Once you have your PVC panel cut out, follow the instructions:

• Cut the bars for the substrates. They can be either plastic or wooden. Their width should not be less than 5 centimeters, and their length should be the same as the width of the base, excluding window frame. The thickness of the substrate is selected based on the height of the window opening and the width of the PVC panel. Please note that the PVC panel must fit freely between the window frame and the substrates.
• Optimal quantity 2-3 substrates per meter of length. Before installing them, the base must be properly leveled.
• The base is leveled using cement mortar or alabaster solution. This is done to ensure that the window sill does not have significant irregularities and maintains the integrity of the structure.
• After the base is leveled, it is checked with a level.
• Supports are installed every 40-50 centimeters. After this, they are checked by level in two directions. The supports can be tilted away from the window, but the angle of inclination should not exceed 0.5-1 degree.
• To check the correct installation of the supports, a control installation of the panel is done. If it fits in well and lies flat, then work continues.
• Before you start fixing the window frame, you should first clean the window frames from protective film and install plugs on the ends.
• The supports are securely fastened, and only after that, plastic panel can be installed. To ensure that it adheres to the base as best as possible, it is tapped with a hammer. After that, control measurements are made again with the level in two directions. If the panel lies flat, then work continues; if not, the panel is removed and the supports are aligned.
• Small gaps should be left on the left and right to prevent the panel from deforming. At the end of the work, they are sealed with sealant. The gaps should be no more than 5 millimeters. This is done so that the foam does not deform the window sill.
• All cracks and voids are filled with foam. Some experienced specialists It is advised to fill the voids between the supports not with foam, but with some kind of solution, for example, gypsum or cement. In this case, the support will be securely fastened.
• If you are afraid that the window sill may become deformed under the influence of foam, then leave several weights on it for a couple of days. Although, this should not happen if you left small gaps on the left and right.
• After the foam has completely dried, the excess should be removed with a knife, all remaining cracks should be filled with sealant, the joints between the window sill and the wall should be leveled and puttied. This way you will give your window sill a neater look.

In order to better understand the sequence of work, we suggest you watch the DIY installation of plastic window sills video.

Unlike plastic, wood gives the interior a touch of luxury and home comfort. But, at the same time, wood is a heavier and more capricious material.

The preparation process is no different from the preparation process for plastic window sill.

The plane is cleaned and primed, leveled and supports are installed. The only difference is that a wooden window sill also needs metal frame.

Wood is pretty heavy material. Small blocks of aerated concrete or wooden blocks. It is best if the gaps between these blocks are minimal. All cracks should first be filled with a solution of cement or gypsum.

To ensure that the window sill does not hang in the air and is securely attached to the surface, screws are screwed from above onto the base at a distance of 30-40 centimeters. The caps of the screws should stick out as much as necessary so that the window sill fits tightly to the base of the window frame and does not hang in the air. To prevent the caps of the screws from falling inward, they are coated with plaster or cement around them. Then, it is applied to the plane construction foam. Special attention is given to the surface under the window, the rest of the space is filled evenly with foam.

After all the work has been completed, it is placed on top wood panel window sill, blown with foam at the seams. After a few days, the foam is cut off and the cracks are filled with sealant.

Installing a window sill with your own hands on a plastic window requires certain knowledge, therefore, carefully re-read the instructions and watch the training video before you begin.

Installing a window sill involves such basic types of work as: surface preparation, leveling, fastening the base, fastening the window sill, sealing the structure.

The final stage of arrangement window openings is to install PVC window sills with your own hands - 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 get a strong, durable and beautiful surface along the entire length of the window, thanks to the following qualities of these products:

• Impact resistance sunlight, tall 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;
• Convenience 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 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 batten are processed 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.

Before installing a window sill to plastic windows, you need to determine the material you will use. Most the best choice- This is an acrylic window sill. Unlike conventional polyvinyl chloride coating, acrylic film is protected from cigarette burns, sand abrasions and other mechanical influences. At the end there is a whole list of types of window sills; let’s focus on the plastic window sill.

It is more difficult to install a window sill with your own hands, but it is also cheaper, and you will gain experience. After the installers complete the work of installing the windows, you can immediately begin attaching the window sills. The tools you will need to complete the work: construction foam, wooden blocks, or plastic inserts, a level or angle, an angle grinder, a hammer drill or a hammer.

The first stage is knocking out protrusions in the slope for attaching the window sill. IN PVC windows There are grooves at the bottom where the window sill should fit, but no one foresaw such a slot in the walls. If you have big house, then by shortening the distance of the protrusions you can save an entire window sill.

When you decide on the size of the protrusion (a few cm is enough), outline the place where you plan to make them with a pencil. Next, depending on the material, walk the grinder along the lines drawn on the slopes. If the material is not very strong, then a hammer is enough to knock off the protrusions later, if you have concrete walls, then you will need a hammer drill with a set of chisels.

Why does it blow after installing the window sill?

Do-it-yourself installation does not always go well - everyone has different skills and experience. Remember that before installing the window sill in the opening, you need to make sure that the installers did not leave you a surprise - holes between the window and the wall, small holes, etc. If you quickly install the window sill without checking this nuance, you will never guess why It’s cold in your apartment, so be careful.

When you have blown out the holes, start cleaning the grooves and the place where the window sill will be installed. Any small pebble can become a major obstacle during installation. After you remove the “large” obstacles, start cleaning the rest of the area - sweep the future location of the window sill with a brush.

Before using foam, it is important not only to clean the area, but also to moisten it - construction foam works in places where there is moisture. We recommend that you use primer for these purposes, just keep in mind that the thickness of the applied layer directly depends on the number of pores in the material. For example, more soil can be applied to aerated concrete than to ordinary concrete- otherwise the place for the window sill will be too wet.

You will need the wooden blocks or plastic inserts that we talked about at the beginning to level the level of the window sill. It should be placed exactly 90 degrees relative to the window. Determine the level of the window sill, and then insert your blanks into the voids between the wall and the object being installed. You can determine the degree either using a level or with your own hands using a corner.

When you're done with your measurements, start blowing with foam. It is very important that the foam is spread around the entire perimeter. Please note that after some time it will increase in size and will need to be cut off. This will need to be done taking into account the fact that putty and plaster will need to be applied under the window sill.

In order to prevent the window sill from rising due to the increasing foam, it is necessary to place a weight on it. Great solution There will be installation of 5-liter water bottles on the windowsill. Three pieces is enough.

Once installation is complete, seal the joints with sealant.

Price of materials

There is no point in buying expensive foam; it will do for 250 rubles. If you raise the window sill, you can do without a foam gun, but with it the process will be simplified. Its cost is about 1000 rubles. The primer, in theory, should be available in the room where the renovation is being done, but just in case: its cost is 100 rubles. The price of a window sill is from 50 to 1200 rubles per meter, depending on the manufacturer and the quality of the material.

Types of window sills:

1. Monomaterial (wooden, granite and other stone, PVC window sills)
2. Composite boards and film materials differ.

Types of boards:

• polyvinyl chloride;
• chipboard or fiberboard;
• wood-polymer composite;

Types of films by type of coating:

• polyvinyl chloride;
• veneer;
• paper laminate (High Pressure Laminate, Continuous Pressure Laminate, EPL coating)

Types of films according to abrasion:

1. PVC film (paper, varnish)
2. Elesgo film (surface hardened by an electron beam).

Video

IN last years Plastic has become a part of our lives. It is used in various fields.

The installation and replacement technology is absolutely simple, however, if you decide to do it yourself, you need to clarify how to install a plastic window sill.

A plastic window sill is an integral part when installing a plastic window.

Today, windows made of metal-plastic, and with them accompanying elements such as window sills, have become more popular than ever.

The final stage of installing a plastic window is.

The window sill, as a rule, is installed together with the window, and such installation is often carried out by the specialists who were involved in the installation of the entire window.

Tools required for installation

The list of basic tools that will be needed for this includes the following:

• circular saw or jigsaw;
• polyurethane foam;
• level;
• pencil;
• roulette.

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Basic installation technologies

There are several basic methods that you can use to do it yourself.

The first and one of the most traditional is fixing the product using a special solution. However, this method is practically not used modern masters due to the fact that there are newer and simpler ways.

One of the most common methods is fastening with self-tapping screws. Using this method, holes are made in the frame into which all the parts are screwed.

The connection area needs to be treated silicone sealant. The edge of the window sill is placed under the frame and is also fixed with self-tapping screws.

The second most popular method of installing a plastic window sill is its installation using metal spring brackets. They must be screwed to the profile using self-tapping screws. The product is installed in the groove formed between the bracket and the frame.

The third and no less popular method of installing this type of window sills is installation on special linings. This method is characterized by the absence of screws or staples.

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Main stages of installation

Preparatory stage.

When you have decided on the installation method, figured out how to properly install the plastic window sill, and prepared everything necessary materials and tools, you can begin installation.

On preparatory stage you need to make all the necessary measurements. This issue should be approached with all responsibility, since the strength of the structure depends entirely on the correctness of the measurements taken. Often, if measurements are taken incorrectly, the whole job has to be completely redone.

When taking measurements, you should remember that the length of the window sill must necessarily be greater than the length of the window itself, but the width can be any. The average width of a window sill is considered to be a width not exceeding 8 cm.

Also take into account the distance to the battery, which is located under the windowsill. Leaving completely small space between them, the movement of air can be disrupted, which will negatively affect the heating of the room.

Pruning.

When all measurements have been completed, you can proceed to the second stage - trimming the window sill.

This stage is relevant if the dimensions finished product do not meet the requirements, but in some cases pruning may not be necessary.

If you need to remove excess width, you should do it on the side that will be attached to the wall. In order not to disturb the structure of the window sill, it is necessary to mark a straight line along which to cut.

This line should pass behind the stiffeners at a distance of approximately 1 cm. Then the window sill will rigidly join the frame and will not bend inward at the junction, which will certainly happen if the stiffening ribs are broken.

Trimming is done using a jigsaw or saw.

Installing the lining.

The lining will be laid on bars pre-installed under the window sill, which will take the main load from the window sill. In order for it to be installed securely and firmly, this entire structure must fit tightly to the frame.

At the same stage it is necessary to cut down bottom part slopes, and the wedges for installing the window sill must be secured.

The fourth stage is the direct installation of the product.

At this stage, keep in mind that the distance between the slopes should be less than the length of the window sill. It should enter the slopes with a distance of a couple of centimeters. The protrusion of the window sill should not exceed 5 cm, then the air from the battery can rise to the window, which will ensure the absence of condensation.

After installing the window sill into the slopes, it is necessary to clean it and set it up. The window sill is positioned using beacons in increments of 60-80 cm. When it is positioned correctly, you can secure it with polyurethane foam.

The product must be left for a couple of days so that it can dry, after which the excess foam is cut off using a sharp knife.

When cracks still remain after treatment with foam, they must be further treated with silicone sealant.

After installing the product, plastic plugs are put on it, which are attached with special glue.

Windowsill - required element any window opening, performing both decorative and, in many cases, practical function. After all, this is one of those places where they are often located flower pots or other small items everyday life

In the past, openings were most often decorated wooden crafts, and with the advent of plastic windows, window sills began to take up space in the interior from similar material.

Advantages and disadvantages of PVC products

pros

To the benefits Products include the following properties:

• the material is not afraid of moisture and temperature changes;
• It does not require special care;
• the design is lightweight;
• does not require periodic touch-ups, and is also not subject to shrinkage and warping, unlike wooden products;
• The window sill can be installed in any length, width and shape.

Minuses

• plastic is inferior in strength to the same wooden products;
• when using glossy decorative film as a coating, the window sill is easily scratched and its appearance deteriorates;
• Hot objects placed carelessly (for example, a pot or frying pan removed from the heat) can significantly damage the surface.

Installation methods

Installation of a plastic window sill can be done in one of several ways:

1. Using a special solution. This method was often used in the past, but now, thanks to the emergence of new ones, it is practically not used.
2. Using spring clips, which are screwed to the substitution profile with self-tapping screws, and the window sill itself is installed in the groove between the window and the bracket.
3. Using self-tapping screws. This is the most quick way, in which the window sill is attached with self-tapping screws to the window frame.
4. Another option is to install a window sill without any fastening elements(staples, screws). This is the most time-consuming method, but at the same time the most reliable. The window sill is fixed using wedges that are driven under it, thereby tightly pressing the edges of the slab to the frame.

Required tools and materials

In order to change the window sill you need to prepare a small set of tools and materials:

• window sill and end caps to connect the panels;
• a container of polyurethane foam and a gun for working with it;
• perforator;
• level, tape measure, simple pencil or marker;
• jigsaw or grinder;
• stationery knife;
• cement mortar.

This process is not complicated and is performed as follows. Along the ends of the slab and along the entire length of the slope a niche is hollowed out using a hammer drill.

After this you need pry the slab with a pry bar or hit with a hammer. The window sill thus freed is carefully removed from the niche.

Or this gentle option is possible with sawing the window sill in the middle:

Preparing the base

Installation work

After the base is ready, you need to measure the niche and, in accordance with the obtained dimensions cut out the window sill from a pre-purchased blank using a jigsaw or grinder.

If necessary, the thickness of the wedges is increased or decreased. The installation of the window sill must be carried out taking into account the fact that the slab should have a slight slope towards the room (1-2 degrees). This will allow condensation and water from watering the plants to drain onto the floor, allowing liquid will not collect under the stove.

After fixing the window sill, the space between it and the base is filled with foam. For better fixation, the plate can be press down evenly with a weight.

Can be delivered as cargo five liter bottles with water in the amount of 3-4 pieces. In this position the structure is left for 2-3 days so that the foam hardens well, then remove its excess with a stationery knife.

It is advisable not to overload the window sill, as in this case its surface may become deformed.

How to seal foam under the windowsill?

You can do this in one of two ways:

1. Seal the foam cut flush tile adhesive solution. If the walls will be painted in the future, you need to putty the area plastered with glue. If you plan to glue wallpaper, the surface is treated with an acrylic primer.
2. In the second case, the foam should cover with vapor-permeable tape, then install a decorative strip (PVC, aluminum or wood) on top.

Find out how to properly seal the foam with a solution from the video:

A few points to consider when installing a window sill.

When working with a hammer drill, it is advisable use funds personal protection (glasses, mittens).

The window sill should not protrude beyond the slope line more than 6 cm, otherwise air circulation may be disrupted, which will lead to fogging of the windows.

Polyurethane foam will stick much better, if the surface with which it will be in contact is pre-moistened.

Having familiarized yourself with how to replace a PVC window sill, you can conclude that this the procedure does not require professional skills and special tools.

The main thing in this matter is to be careful and Don't make mistakes with sizes when cutting slabs Therefore, the rule “measure twice, cut once” is more than appropriate in this case.

How to repair a window sill - watch all the installation secrets in the video: