Do-it-yourself: selection and installation of window slopes from sandwich panels. Quick installation of slopes from sandwich panels with your own hands Installation of sandwich panels on window slopes

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Sandwich panels are increasingly being used because the material is light in weight, easy to maintain and resistant to stress.

Sandwich panels for slopes plastic windowsfinishing material, which includes three layers.

Characteristics and features of the material

A couple of layers consist of plastic, the third, inner layer is insulation. Such panels are used in construction almost everywhere; any job can be done, but there are some differences, which lies in the insulation used.

Panel insulation is most often - mineral wool. The sandwich construction is ideal for installing on a window slope; the material does not allow extraneous noise or cold to pass through, due to which the window will retain heat in the house. The characteristics of the panels do not end there, because mold and mildew do not appear on them, and they are not subject to temperature changes. The sandwich panel comes from different materials what's worth with outside, more details in the table:

Material: Description:
Cink Steel: Installation of the panels is easy, operation is simple. Not used for windows.
Aluzinc: It is extremely rarely used for windows, due to the fact that the appearance of the window will be spoiled.
Drywall: Suitable for creating panels on slopes. Easy to use, the slopes will look beautiful.
Plastisol: Durable material, since the panels contain special additives that make the panel stronger. Not subject to destruction due to weather conditions, resistant to mechanical damage. The composition is free of toxins, which means it can be used for window slopes sandwich panels of this type, both inside and outside.
Polyvinyl chloride or polypropylene: Most often used to create a sandwich panel, ideal for window slopes.

Important! It is convenient to cover a window with such material, because PVC panels are produced in different colors, white material or wood-like material is used.

Advantages of plastic sandwich panels for window slopes

The main advantage of the panels is that they are 100% resistant to moisture, which means there will be no mold or mildew on the slopes, and condensation will not appear on the window. Comparing drywall and sandwich panels, plastic sheets are easier to install, installation the process is easy In addition, there is almost no debris during operation.

The cladding does not require special care; it will be enough to wash the surface when needed and that’s all. The installation work does not require any special tools; a standard set and a knife or jigsaw that can be used to cut and saw the material will suffice. The cost of the slope is minimal, the cost of the panels is acceptable, considering the advantages of the material.

How to properly make slopes from sandwich panels (video)

Preparatory work

After dismantling wooden windows and installation, metal-plastic, it is necessary to prepare the surface for the installation of a slope made of sandwich panels. You need to do the work step by step, the preparation instructions are as follows:

  1. The wall is coated with an antifungal agent.
  2. The mounting foam that gets in the way is cut off; if necessary, the cracks can be foamed and then the remaining foam can be cut off.
  3. The frame is measured, points need to be placed along the perimeter, retreating from the edge by 5 mm. 2-3 dots are drawn on each side. After that, a level is placed on them and everything is connected. The lines must be in a plane.
  4. The dimensions of the opening are taken at the top and bottom. By the way, during preparation you can also insulate the window sill. Insulation will make the house warm and cozy.

The preparation of slopes from sandwich panels with your own hands is completed, now you need to install the system on the window.

Installation of slopes made of sandwich panels


The installation of window slopes from sandwich panels is carried out correctly as follows:

  • The material that needs to be used to cover the window is being prepared. During the work the application will require: starting profile, finishing profile, platband, foam, silicone or sealant.
  • Next, everything is carefully measured again, the data is transferred to the mount (profile). The profile should be cut to size and then installed around the perimeter of the window with self-tapping screws. The step width is 15-20 cm.
  • Now the depth of the slope and other parameters of the elements are taken to transfer the data to the panel. Cutting tools the sheathing is cut.

  • All the cracks on the slope must be filled with foam, only after this the installation of slopes from sandwich panels begins.
  • The panel is placed in the starting profile, it will guide the rest of the cutting. The material is leveled.
  • The finish should be secured with tape or a support strip.
  • Similarly, you should fasten the panels around the entire window and stick tape on them.
  • If the gap between the panel and the wall is large and the thickness allows, then the technology involves inserting mineral wool.
  • The external casing is cut to the height of the window and made slightly longer than the opening, by the width of the casing.
  • The plastic trim is placed on the panel in accordance with the dimensions.

  • Manufacturing correct angles, for them you will need to cut the upper part of the platband at 45 degrees, and then fasten it at the top. The plastic corner should match at the edges. The vertical side is done in the same way.
  • At the end, the seams are sealed, which will keep street noise and cold out, preventing them from entering the house. Silicone is used for this. The platbands themselves should be coated around the perimeter and glued to the slope.

This completes the finishing of the slopes with sandwich panels. The technical process is presented in detail in the video at the end of the article. An example of how to finish a window can be found on the Internet in the photo. Installation PVC sandwich panels for slopes, a simple process, the most convenient and good for people without plastering experience. Knowing the characteristics of the material and the rules for how to install a slope, you can veneer everything yourself.

Photo gallery of finished works

After installing plastic windows, the window opening does not look the best: foam, pieces of plaster stick out, and the wall material is visible in places. All this “beauty” is closing different ways, the most practical, fast and inexpensive of which are plastic slopes. It is better to make them from sandwich panels (two layers of plastic with polypropylene foam between them). They are dense, durable, made of good material.

Basic installation methods plastic slopes two: with and without a starting profile. Both are given with step by step instructions and photo. Decide for yourself how to attach slopes to plastic windows. Both methods give good results.

Photo report 1: installation of slopes from sandwich panels without starting profiles

This method is suitable when the window is installed so that the distance from the window frame to the opening wall is too small. In this case, installation with a starting profile (see below) is either very difficult or - usually from the hinge side - completely impossible.

After installing the plastic window, the following picture was observed.

The installation of slopes for plastic windows begins with preparing the opening: we cut off the remaining foam with a stationery knife. It is easy to cut, just don’t overdo it, cut it flush and don’t cut it out - the foam both holds and insulates the frame. Pieces of plaster that interfere and protrude are also removed. If they hold up well and do not protrude beyond the plane of the future slope, you can leave them - the foam will slide less.

Then around the perimeter of the window we nail (we put it on dowels if the wall is concrete) a thin strip - 10 * 40 mm - with the wide side facing the slope.

Usually they don’t level it, they nail it as is, but if you want, you can make it level by placing pieces of plywood, thin boards, etc. in the right places.

Now you need to cut the plastic panels correctly. You can do it in a standard way: using measurements, you can make a stencil. It seems easier with a stencil. Take a sheet of paper larger than your window (I had old wallpaper). Apply to the slope, crimp, bending the excess. Cut along the curved lines, try on, adjust as necessary.

It is more convenient to start from the upper part of the opening. Having made a paper stencil, we outline it on the plastic. Considering that about 1 cm will go into the foam groove, add this centimeter along the edge that will be inserted there. We cut it out with a small margin - it’s easier to cut it off than to cover it up later.

We cut it with a hacksaw and a metal blade, try it on, adjust it so that the plastic stands up straight, without bending. We level it so that the panel is flush with the plaster. The edge turns out to be almost even; where necessary, we trim it with a file.

Having removed the tried-on and adjusted strip, along the outer edge that will be nailed to the plank, we drill holes according to the thickness of the nails, retreating about 0.5 cm from the edge. This will make it easier to attach and will not damage the plastic.

We put it in place again, take a balloon with mounting foam and short “sprays” to fill the gap with foam. We try to get as deep as possible, but don’t pour too much: when it swells, it can distort the plastic.

There are several points to consider when working with polyurethane foam. If the plastic is smooth, the foam does not have a very good grip on it. To improve it, either treat the surface that faces the wall with sandpaper, and/or prime it with something to improve adhesion. The second nuance: for normal polymerization of the foam, moisture is needed. Therefore, before installing the plastic, the slope is sprayed with water from a spray bottle. Naturally, there should be no dust on the wall - it should be swept away with a brush or removed with a vacuum cleaner. If the plaster or mortar is loose, the opening is pre-treated with a penetrating primer, which will bind the concrete particles together.

Then we lift the panel, pressing down the foam, insert the nails into the holes and fasten the outer edge to the bar. The inner one rests against the window frame.

Using the same technology - cut out a paper template, try it on, transfer it to plastic - cut out a plastic side. Here you need to be especially precise so that the gap between the slope panel and the window sill (upper slope) is minimal. To do this, the edge will have to be processed sandpaper. To make the edge smooth it is easier, it is more convenient to process it with sandpaper attached to a smooth block, a file or a sharpening stone (half a circle, as in the photo).

We adjust it until it matches perfectly (as best as possible) at the top and bottom, and install it in place, driving one edge into the groove near the window. When the result is satisfactory, we level the outer vertical edge to the same level as the wall plaster. You can do this with a stationery knife on the spot, or you can draw a line on the panel (with a pencil, a thin marker, scratch it with something sharp) and then modify it with whatever is convenient.

Having removed it, we also drill holes for nails along the outer edge. We install the panel in place, take foam, and fill the gap from bottom to top. Too much foam is not good here either, as it can bend the plastic. Therefore, we fill it in short portions, trying to fill it as deeply as possible.

On the vertical parts of the slopes, you can do it differently: apply foam to the panel ready for installation along the far edge, which goes under the frame, before installation. The strip is made continuous or applied as a small snake. Only you need to do this not from the very edge, but stepping back a little. Then the plastic part is inserted into the cut-out groove, positioned as needed, and the rest of the gap is filled with foam (do not forget to wet the wall before installation). Once filled, press, level, and secure with nails into the bar.

To prevent the foam from moving the edges of the slope during the polymerization process, tape the joint at the top and bottom with masking tape. No matter how hard you try to adjust the plastic evenly, gaps, albeit small ones, remain. They can be covered with acrylic. It is sold in foam-type tubes and placed in the same mounting gun.

Squeeze the strip into the crack, rub it, level it, remove the excess with a damp cloth. soft cloth or a sponge. This operation needs to be done in small areas and wiped carefully - completely clean. As long as the acrylic has not hardened, it cleans up well. Then - with great difficulty. It is more convenient to start sealing cracks from the top - immediately - the horizontal panel of the slope, then the joints, then move down first along one side, then along the other. The last to be sealed are the joints with the window sill.

After drying - 12-24 hours, depending on the sealant (written on the tube), acrylic can be pulled into the seam - this is if the cracks are large. Go through all these places a second time using the same method. After the second layer has dried, if there are any roughness or unevenness, they can be smoothed out with fine-grain sandpaper, folded in half. In general, it is better to carefully level it while it is still wet, otherwise you may scratch the plastic.

That's it, the plastic slopes are installed. After the final polymerization of the foam, the bevels must be puttied, leveling with the surface of the walls. After this, you can remove the protective blue film. As a result, the window will look something like this.

When installing these plastic slopes, sandwich panels were used. These are two layers of plastic, between which there is a layer of foamed propylene foam. Using the same technology, you can make a window frame from inexpensive plastic window sills or white PVC wall panels. The most unreliable material is panels: even wall panels are pressed through quite easily, to same thing If the front layer of plastic is thin (cheap), then the jumpers are visible in the light. In sandwich panels and plastic window sills there is no such. And it takes a lot of effort to push through, and there are no jumpers even for clearance.

Photo report 2: installing plastic slopes with a starting profile

The installation of plastic slopes using this technology begins with the preparation of the window opening. We cut off the foam evenly, remove everything that does not adhere well, clean off the dust, and if necessary, go over the opening with a primer that improves adhesion.

Along the perimeter of the opening, but already near the frame, fasten wooden block. Choose the thickness depending on the distance: it should almost fit the frame. One side of the block must be worked with a plane, making an inclination. The angle of inclination of this face is equal to the installation angle of the slope. You can saw it off, but it’s more difficult to make it straight unless there is a circular saw with adjustable angle.

We screw the treated block to the walls around the perimeter of the opening. The mounting method depends on the wall material. If the wall is brick, you can try using self-tapping screws; in a concrete wall, you need to install dowels.

You buy a starting profile in the store, install it with the long side to the block, and fasten it. It is more convenient and faster to fix it to the bar with brackets from construction stapler, if this is not the case, you can use small nails or self-tapping screws with flat heads.

When choosing a starting profile, choose a dense one. It’s more expensive, but you only need three meters per window, maybe a little more. A dense profile will hold the plastic well, a soft one will bend and the appearance will be ugly. Another point - when installing the profile, press it as tightly as possible to the frame so that there are either no gaps at all or they are minimal.

At the top, when joining vertical and horizontal profiles, you need to be especially careful and cut them exactly at an angle of 45°. If there are small gaps, they can be sealed with acrylic.

Using this technology, it is more convenient to start installing reservoir slopes from the sidewalls. Insert the panel into the fixed starting profile. It is also better to take them from expensive and dense ones, with a thick layer of plastic. If you install cheap ones (ceiling), then the front wall is thin, and in bright light the jumpers will be visible. In addition, such plastic can be pressed even with your finger.

Width plastic panel there should be more than a slope. If the width of one is not enough, two are joined. But then at the junction you will need an additional vertical strip to which the first strip will be attached.

The panel inserted into the profile is usually longer than the opening. Holding it with your hand, mark the line of the opening. After removing, cut along the marked line.

We install the panel again, move it a little away from the wall and fill it with foam, trying to fill it without gaps, but without excess. To make this happen, we start from the far bottom corner - draw from bottom to top near the nailed bar. By the time we reached the top, the foam below had expanded a little. Draw a line with foam again, but closer to the edge. The closer to the outer edge, the less foam is required - after all, the panel is installed under a slope, so make the paths thinner. Having reached the middle, make a snake on the rest of the surface and press the panel the way it should stand. Align and check. Secure to the wall with masking tape. The second part and then the upper part are installed in the same way. It can also be cut out using a paper template, and the edges can be adjusted to a perfect (or almost) match using sandpaper.

Having installed all parts of the slope and secured with masking tape, leave until complete polymerization. Then, in order not to putty the cracks between the slope and the wall, white nails are glued onto liquid nails. plastic corner. The main task is to cut exactly in the corners. It is easy to glue: apply a thin strip of glue to both shelves of the corner, press it, moving your hand along it, hold it for a couple of minutes. This is how they are installed around the entire perimeter, then, before the glue dries, they are also glued with masking tape and left.

After a day, we remove the tape, the plastic slopes are ready.

If there are gaps somewhere, they are sealed with acrylic, as described above. Don't use silicone. In the light it quickly turns yellow. In a year or two your windows will look terrible. Look for white acrylic sealant and mask it with it.

Video

For an option for installing slopes with a starting profile screwed to the window frame, see this video.

Video version of installing plastic slopes without a starting profile.

And another way in this video. Here pay attention to the finishing of the panel joints. They were made using a special profile. Could be so.

Installing slopes from sandwich panels is one of the finishing options window openings, which has its undeniable advantages. The fact is that this material combines several advantages at once. Firstly, the product has the shape of a sandwich, that is, there is insulation between two layers of plastic, which provides excellent specifications. Secondly, installation is carried out without much difficulty; there is no need to invite specialists or use complex tools.

Many people believe that slopes are optional, so they put off finishing them until the very last moment. In fact, this is a very important procedure that ensures not only the safety of open areas of the walls, but also the installed window frame.

Installation of slopes made of sandwich panels is important for the following reasons:

  • Protection of assembly seams from destruction. Therefore, finishing of plastic windows should be carried out outside and inside the premises.
  • Prevents moisture penetration. That is, the object itself, and mostly the walls, are protected from the penetration of moisture, which leads to the appearance of mold.
  • Improved thermal insulation.- this is the most vulnerable place, through it cold air from the street can enter the room and also escape warm air from the room.

Summarizing the above, we can conclude that slopes are an irreplaceable part of the room that needs high-quality finishing.

Slopes made of sandwich panels can improve the thermal insulation of windows and prevent the appearance of moisture

Advantages of finishing with sandwich panels over other types

Finishing slopes with sandwich panels is an excellent solution that has many more advantages than using other types of finishing materials.

  1. Window finishing with gypsum plasterboards. This option is considered quite labor-intensive. It is convenient to work with sheets of plasterboard when you plan to cover walls or construct a frame. Otherwise, you have to purchase much more material than is needed for the window slopes.
  2. Using plaster. This method is loved by many due to the fact that it does not require any special financial costs. But it must be taken into account that finishing areas using solutions is a very labor-intensive process. If there are no certain skills, then withdraw flat surface almost impossible. Also, we must not forget that the work is accompanied by dust and dirt.
  3. MDF products. Of course they imitate perfectly natural materials, for example, a cut of wood, but using them for cladding plastic windows is not entirely the right decision. After all, you need to take into account that the products must be combined with each other.

Indeed, sandwich panels for installing window slopes are an option that deserves special discussion. Although many have not yet appreciated the advantages that this material provides.

Features and choice of material

Plastic sandwich panels are a universal material for finishing windows. He has successfully supplanted other options in this field that do not have so many advantages. It should be noted that this product can be used even when working with wooden structures.

Of course, it is necessary to take into account the characteristics of the material. They depend on the variety that will be used for installation work. So, there are several product options that differ in their technical characteristics.


Sandwich panels are a universal material for finishing slopes with many advantages.

Sandwich panels for slopes are distinguished:

  • Consisting of two layers. They consist of polystyrene foam (or other rigid insulation) and a protective layer of plastic.
  • Having three layers. This product is different in that it has one more protective layer. That is, the insulation is located in a space that is closed on both sides.

The first type is considered the most acceptable. After all, the presence of another layer of plastic that will be in contact with the surface to be finished is not the best option. It requires a better approach to sealing and an additional layer of insulation.

Advantages and disadvantages of the product

Currently, sandwich panels for windows are produced that have excellent properties. The following can be distinguished:

  1. The presence of a layer of foam is an excellent opportunity to retain heat in the room. This material does not transmit cold from the walls, which creates a special microclimate in the room, and the windows are not covered with condensation.
  2. The sandwich panel has an energy-saving effect - it reflects heat, limiting its loss as much as possible.
  3. Large selection of colors and textures. Naturally, the most popular is considered white shade, but, if you wish, you can choose any color scheme.
  4. Window slopes made of sandwich panels can have different size. The material is selected directly based on the size of the treated areas.
  5. Already exist ready-made options, which simplify the installation process.

Plastic sandwich panels are available in a wide variety of colors

Of course, there are some disadvantages. These should be taken into account:

  • The material must be cut very carefully, because it can be very easily damaged, which will lead to damage to the entire part.
  • Surfaces need to be prepared for work. Although this procedure will not cause any special problems.
  • This option is not suitable if the distance between the wall and the hinge installed on the frame is small. That is, the material hides some space that is necessary for its installation.

You must work with the material very carefully, otherwise it can be damaged.

Before thinking about how to make slopes from sandwich panels, it is advisable to prepare the tools necessary for the job. For this event you will need:

  • Miter box – for cutting material for required angle. This device significantly reduces work time and also allows you to create a more beautiful coating.
  • Set of spatulas. Although the process itself will only require a medium and small option.
  • Metal hacksaw or electric jigsaw.
  • Screwdriver or set of screwdrivers.
  • Level and roulette.
  • A special construction gun that is used to apply " liquid nails».
  • Stapler. A more professional option is needed, which belongs to the middle price category. This tool will be useful in household, so the cost of purchasing it will be justified.

Tools required for installing slopes made of sandwich panels

To install slopes made of sandwich panels, a number of preparatory measures are required:

  1. All areas that will not participate in installation are closed plastic film and cardboard. This will prevent damage to the window sill and the window itself.
  2. The slope areas are well inspected. It is necessary to make sure that the surface is completely dry and there are no traces of mold.
  3. Excess polyurethane foam is trimmed off. A simple utility knife is perfect for this.
  4. The condition of the base is immediately checked. If necessary, apply a layer of putty. The presence of crumbling areas indicates that the area needs to be completely replaced.
  5. To prevent the appearance of fungus, use a primer with an antiseptic.
  6. The installation seams are additionally sealed.

Preparatory work before installation of slopes

Thus, you should get a clean surface, without any defects. It must be taken into account that after applying the primer, the work area must dry thoroughly.

Installation methods for sandwich panels

Installing slopes from sandwich panels with your own hands is possible in three ways:

  • Cladding using polyurethane foam.
  • Application of "liquid nails".
  • Mounting using wooden slats.

Each of these options has its own advantages and disadvantages. It is advisable to take this into account when giving preference to one of them.

Foam mounting

Many people believe that this method is the simplest. For this installation option, it is necessary to purchase a sandwich that will have two stiffeners. The procedure itself is divided into several stages:


Fastening sandwich panels to slopes in this way allows you to create an additional layer of thermal insulation. In addition, the mounting composition perfectly withstands any impact and is not subject to destruction from moisture.

For a better understanding of the technology, we suggest watching this video:

You should know! Installation on foam can be done without the use of guides. Slopes on windows are attached directly. The technology is as follows: a sufficient amount of foam is applied to the panel. The part is pressed to the surface and torn off for a while. Next, fix it tightly by installing a spacer. This method is inconvenient because it can lead to distortion of the structure.

A similar technology is used when “liquid nails” are used. They are more convenient because they do not expand as much as foam. But this method requires a better prepared surface.


Using “liquid nails” allows you to avoid expansion caused by polyurethane foam

Mounting on wooden slats

You can install slopes made from sandwich panels yourself using wooden slats. They are most convenient to use together with a guide profile. The procedure is:

  • Dimensions are taken and transferred to the panels. Details are trimmed.
  • Wooden slats are installed along the edge of the window opening, which is located on the outer part. They should form a complete outline. Correctness is controlled using a level.
  • The profile is screwed to the plastic frame.
  • A small area will form, which will represent a void. It is filled with mineral wool or filled with polyurethane foam.
  • The panels are installed in the profile, but are not glued, but are nailed with a stapler. The backing layer of PVC is pierced with a staple. Therefore, this option is suitable for three-layer products.

On a note! If you do not use a profile, then the elements must be glued. Then internal corner treated with sealants to hide possible defects.

Thus, covering windows with sandwich panels using wooden slats is an excellent solution that makes it possible to carry out installation quickly and efficiently.

DIY sandwich panels

Few people know that sandwich panels can be made independently. This technology is used in cases where it is necessary to obtain material of non-standard width.


In the presence of necessary materials, sandwich panels can be made independently

The general principle is:

  1. Prepare a layer of foam. Its thickness is selected individually.
  2. Buy plastic or other material.
  3. The protective layer is smeared with glue and insulation is laid on it. The top is covered with another panel.
  4. To fix the structure, use a clamp or other press.

The result is excellent material that will allow you to perform necessary work. Of course, this option should be used as a last resort, because factory products are of higher quality.

As a rule, renovation of an apartment begins with the replacement of old ones and the subsequent installation of slopes for new plastic windows. There are several options. In this article we will look at how to make slopes from sandwich panels with your own hands. The photographs in the article clearly reflect the course of action.

Preparing for work

To install plastic slopes from sandwich panels you will need:

  • sandwich panel;
  • “P” profile (starting);
  • “F” profile (slope cover);
  • liquid plastic (optional);
  • roulette;
  • sharp knife;
  • self-tapping screws 2.5x7mm;
  • screwdriver, drill or screwdriver.

Using a tape measure, you need to measure the length and width of the slopes. Taking this data into account, three strips are cut out of the sandwich panel: the top (parallel to the window sill) and two side strips.

One caveat: if you plan to finish just one slope in panel house, then in order to reduce costs, strips of the required sizes can be purchased from the seller. This will save you from buying a sandwich sheet - the entire panel.

Using a sharp knife, carefully cut off the excess layer of polyurethane foam around the perimeter of the plastic window block. It should be borne in mind that work is carried out after the foam has completely dried. At least 24 hours must pass from the date of window replacement before installing window slopes from sandwich panels.

Fastener "P" profile

A starting profile is cut according to the dimensions of the slopes, resembling the letter P in cross-section. It is attached using self-tapping screws exactly along the edge of the window profile. The distance between the screws is approximately 10-15 cm. In this case, first of all, the profile should be installed at the top. Then the side elements are brought close to the top profile, leaving no gaps.

A nuance: it is possible to install slopes using a sandwich panel without using a starting profile. In this case, the strips of sandwich panels are inserted closely behind window profile 1 cm deep. This is done with step-by-step foaming of the niche to fix the slope. The process is more labor-intensive than using a “P” profile, but the result is more aesthetically pleasing.

Installation of strips of sandwich panels

The top panel is inserted into the starting profile already secured with screws.

After this, 4 more parts of the starting profile are cut off. Its length is determined by the width of the slopes. The segments are inserted into the side starting profile at the top and bottom on both sides. Then they are secured with self-tapping screws to the top of the sandwich panel and to the window sill.

A nuance: most masters specializing in these types finishing works, exclude this stage. In this case, the sandwich panel strips simply adjoin the top strip and the window sill. The gap at the joints closes special meansliquid plastic. It, in turn, hardens and acquires the same characteristics as ordinary plastic. There are also negligent workers who use conventional sealant, and after a short time the slopes lose their appearance: the joints treated with sealant darken and become dirty. Any of these two methods reduces work time and material consumption, and has its supporters and opponents. Therefore, the choice of option is a matter of taste.

Next, a sandwich panel strip is installed into a kind of structure fixed on three sides (along the window opening, at the top on the sandwich panel and at the bottom on the window sill), from the starting profile. The process of working with the panel on the other side is completed in a similar way. As a result, the plastic slope is almost ready. All that remains is to give the appearance to the outer sections.

The last stage of installing slopes made of sandwich panels

To give the plastic slope a finished look, use the “F” profile, or, as it is also called, the slope cover. The profile is cut into strips of the required length, based on the following calculations:

slope length + profile width for the side parts and slope length + 2 profile widths for the upper slope.

It is advisable to leave a longer length than required. Since in the end the excess will still be cut off, but a shortage of even one centimeter will require a complete redo.

Using a ruler and pencil, mark a cutting line along which the excess edging is trimmed. The result is neat right angles.

If desired, the joints are treated with liquid plastic. But you can do without it. The plastic slope made from sandwich panels is ready!

A nuance: for many slope installers this is the final stage. However, it is preferable to fill the niches between the sandwich panels and the wall with foam. To do this, the “F” profile prepared for installation is temporarily dismantled. The voids are filled with foam, the next day the excess is carefully cut off, and the slope covers (“F” profile) are returned to their places. This creates additional heat and sound insulation in the apartment.

Questions on the topic of installing slopes made of sandwich panels can be left in the comments below. Also read how you can make windows, with step-by-step instructions.

We invite you to watch the training video.

How to make slopes from sandwich panels with your own hands

Windows must fully perform their functions. A comfortable microclimate in the house is created after high-quality sound and heat insulation window designs. To achieve this goal, slopes are installed on the windows. How to make slopes on plastic windows? Very simple - you can do it this work yourself, or you can involve professionals to help.

What are slopes?

Slopes are the inner walls of the window opening niche. Finishing various materials or plastering of internal and external slopes is an integral part. The opinion that by foaming the window you have solved the problem of thermal insulation of the house is erroneous. Foam that is not protected by slopes quickly picks up moisture and then breaks down. Slopes not only provide the room with the necessary insulation, but also give the window a finished look. The design of the entire house or apartment depends on the aesthetic appearance of the window opening. Slopes also protect assembly seams, which protects windows from fogging.

Types of slope finishing for plastic windows

The list of main services of companies installing metal-plastic windows includes measurement, installation, etc. Next, the customer independently decides what slopes there will be. There are several types:
  • plastering;
  • plasterboard;
  • plastic;
  • metal;
  • from foam plastic;
  • wooden.

Let's take a closer look at the most common of them.

Plaster slopes

The construction of these slopes takes place in several stages. To increase adhesion, the surface is first treated with a primer. Then several layers of plaster are applied, each of which must be allowed to dry. Plaster is the cheapest, but ineffective way to finish slopes, since the lack of heat-insulating properties of this finish leads to hypothermia and further fogging of the windows. The plaster is applied using a mesh, and the gap between the window and the plaster must be sealed with silicone.

Plasterboard slopes

At correct installation will please with quality, aesthetic appearance and durability. Proper insulation with mineral wool or foam will create high thermal insulation properties slopes. After installation, the drywall is primed and puttied. The paint is applied last after the previous layers have dried. Remember drywall is very susceptible to moisture. Therefore, they are not recommended to finish the external slopes of PVC windows, but they can install such slopes on the balcony if it is glazed and insulated.

Plastic slopes

Finishing window slopes with plastic is the most universal option. Ease of installation, reliable design, high noise and heat insulation qualities combined with an attractive appearance are the main advantages of not only internal but also external plastic slopes. Sheet plastic slopes are often replaced sandwich panels. Installation of slopes from this material is excellent option for lining the sides of window openings. Three-layer the panel consists of two external decorative layers of plastic and internal insulation. Extruded polystyrene foam is used as the internal thermal insulation layer.

The big advantage of this material is the huge selection color shades. It will not be difficult to choose a panel to match any window color. The structure of sandwich panels is very similar to the surface of plastic windows, so additional decoration with plastic slopes is not required. To install slopes from sandwich panels with your own hands, it is enough to have the desire, or better yet, a little experience in carrying out this work and following the technological instructions. Purchasing sandwich panels almost ready-made will greatly speed up and simplify their installation.


It is also used for finishing window slopes. PVC foam panels. Thanks to its porous structure, this material creates additional thermal insulation of the room, does not deform due to temperature changes and does not delaminate due to prolonged heating. Let's take a closer look self-installation PVC slopes on plastic windows.

Do-it-yourself installation of PVC slopes

Like all construction works, the installation of plastic slopes begins with preliminary preparation, during which the materials and tools necessary for this work are purchased.

What materials and tools are needed:

  • Plastic for slopes with a thickness of at least 8 mm.
  • U-shaped starting strip made of plastic.
  • F-shaped plastic profile.
  • Insulation material: mineral wool, polyurethane foam.
  • Wooden slats.
  • Drill for self-tapping screws.
  • Building level.
  • Roulette.
  • Putty knife.
  • Cement mortar.
  • Long screws - 95 mm, self-tapping screws - 4.5 mm.
  • Painting knife.
  • Silicone sealant.
  • Metal scissors.
  • Construction stapler.

Next is preparing working surface: Remnants of wallpaper or old plaster are removed from old slopes, and the surface is treated with an antifungal agent. If during installation metal-plastic window cracks have formed on the street side and need to be sealed with cement mortar.

This procedure is necessary to protect the polyurethane foam from harmful sun rays and seal the external assembly seams.

  1. First of all, wooden slats are installed along the top and sides of the window openings. They are fixed with long screws (95 mm) and fastened in such a way that their edge does not protrude beyond the level of the wall. The holes for the screws are drilled using a drill. The screws initially do not tighten completely. Having decorated all sides of the window opening in this way, we check the position of the slats building level. This is necessary to create perfectly smooth slopes. After which the screws are tightened to the end.
  2. The starting U-shaped strip is attached along the outer edge of the window using self-tapping screws. The joints of the U-shaped strips should be even and smooth, small protrusions should be cut off with a paint knife. The U-shaped profile has a groove into which the plastic slope will be inserted.
  3. Next you need to install the F-shaped profile. Installation this profile must be made so that its groove is installed opposite the groove of the U-shaped starting strip. The F-shaped groove located above the window must be cut off. Top part of this profile is overlapped. After precise joining, excess parts of the F-strips are cut off with metal scissors. F-profile is attached to wooden slats using a construction stapler. The part of the end of the profile that is closest to the wooden batten is attached. The F-profile, first of all, plays the role of a decorative element.
  4. Now you can proceed to installing the panels into the grooves. But before that it is required to measure and also accurately cut the plastic with extreme precision. Simultaneously with the installation of slopes, mineral wool is laid. Care must be taken to ensure that the insulation lies flat. If the joints of the entire structure are not perfectly smooth, you can use white silicone sealant to fill the defects.

In it you will find detailed descriptions various models and installation instructions.

Sandwich panels for window slopes can be installed using a slightly different technology. Its difference from the one described above is that after installing the starting profile, sandwich panels cut to size are immediately installed in it, the opposite edge of which is attached with self-tapping screws to wooden slats diagonally. Next, the F-profiles are installed and the joints are covered with sealant. How to do this work is clearly shown in the video.

This completes the installation of slopes made of sandwich panels. The result will please you if, when working with your own hands, you follow the following recommendations:

  • Installation of slopes should begin from the top element.
  • If there is a need to use polyurethane foam, remember that when it hardens, it expands and begins to put pressure on the structure.
  • Surplus silicone sealant remove with a piece of plastic.
  • Choose plastic only with excellent quality indicators.
  • Until completion PVC installations slopes, it is not recommended to remove the protective film from the window.
  • To prevent the plastic structure from being damaged or losing its integrity, leave it alone for 16 hours.
  • Carefully study the information about the proper installation of slopes and the sequence of work stages.

Installing plastic slopes on windows with your own hands, without using a starting profile, is another option. To do this, around the perimeter of the window in polyurethane foam A small recess is made into which the sandwich panel is then inserted. This technology presented on video.



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