How to cut foam baseboard. A lesson on the correct cutting of ceiling skirting boards. Gypsum skirting boards

How to cut foam baseboard.  A lesson on the correct cutting of ceiling skirting boards.  Gypsum skirting boards
How to cut foam baseboard. A lesson on the correct cutting of ceiling skirting boards. Gypsum skirting boards

Installing baguettes and skirting boards gives the renovation a finished and neat look, but only if the trimming is done correctly and all joints meet perfectly evenly. Used for pruning different instruments and methods that make work easier, but it is also important to take into account many nuances, which we will talk about today.

Types of ceiling and floor skirting boards, selection of tools

Installation of baguettes and skirting boards at least important stage repairs than any other. And cutting the corners is the most difficult part here. It is important to choose the right tool for the job and the most suitable way cutting

Ceiling plinth

Ceiling molding, also known as molding, fillet, border or simply plinth, is most often used to finish the joint between the wall and the ceiling. Although sometimes they cover internal corners, make decorative frames or panels, decorate niches and architectural elements. There are several most popular materials for making ceiling moldings:

Plastic (polyvinyl chloride). It is more convenient to cut wide and rigid moldings with a hacksaw. If you need a more gentle tool, use a jigsaw.

Foam plastic (expanded polystyrene). A very light and porous material that is best cut with a sharp construction or stationery knife.

Wooden baguettes. Saws with helical sharpening, specially designed for baguettes, are suitable for cutting. You can also use hand or jigsaws.

Floor plinth

A modern floor plinth can hardly be called a plank that closes a gap. This is a structural component that complements the design and emphasizes general design. Skirting boards are made from several materials:

Wooden can be made from solid wood or veneer. For pruning use flat or circular saws, jigsaws.

Plastic skirting boards- “dangerous” competitors to traditional wood. Easy to install and cut with a regular hacksaw.

Aluminum skirting boardsthe last word in interior design. They are usually cut with an electric saw or a hand saw for metal.

Only on wooden baseboards will you have to make corner trims. The rest are cut straight and connected using special corners.

Types of angles

Corner joining and trimming of the plinth differs depending on the type of corner; they are distinguished: internal, external and non-standard.

An internal angle, in other words, an angle of a room less than 180°, is usually 90°. When pruning internal corner Bottom part The ceiling plinth always protrudes above the top. The first step is to measure the angle between the walls; if it is standard and equal to 90°, then the planks are cut at an angle of 45°. The baguette that is glued on the right side should be cut on the left, and the left strip on the right.

The external or external angle is less common, it is more than 180°, usually around 270°. When working with such angles, everything is exactly the opposite. The edge of the plinth that will press against the ceiling should be larger than the bottom.

Non-standard angles. These most often mean angles with a degree greater or less than the standard of 90° and 270°, as well as various types of rounding. Trimming in in this case carried out “by eye” or with markings in place. Areas with curves are assembled from several small elements, each of which is adjusted in turn.

Methods for cutting skirting boards

If the corners are standard, it is most convenient to cut the baseboards using a miter box or stencil. In other cases, they resort to the method of marking in place.

Cutting a baguette using a miter box

Miter box - carpentry tool, which is designed specifically for cutting baguettes. It can be made of plastic, wood or metal. The shape resembles a tray with slits (grooves) on the walls. The miter box helps to correctly determine the angle of inclination and evenly cut the bar at 45, 60 or 90 degrees. Some models may have more graduation guides.

When working with a miter box, it is important to place the baguette correctly:

  1. The end cut of the baguette has the shape of an irregular triangle, so the side that will be glued to the ceiling is pressed against the bottom of the miter box, and the wall side against the wall of the instrument.
  2. The cut is made through opposite grooves. If you need to cut a baguette at an internal angle, then it is cut at acute angle, and if external - under obtuse.
  3. Ceiling plinths are always laid against the nearest wall. Left side placed on the left side, and the right one, respectively, on the right.
  4. Floor plinths are applied to the far wall of the miter box, “away from you.” Corners are cut using the same principle.

A stencil is nothing more than a flat imitation of a miter box. It's not difficult to make. To begin with, you should arm yourself with a ruler, pencil and protractor.

On flat surface draw two parallel lines, the width between which should not be less than the width of the baguette. A perpendicular is drawn in the middle of the segments. All angles must be 90°. Next, this segment connecting the two parallels is divided in half and two more lines are drawn through the point at an angle of 45° from the perpendicular. Place a baguette on the stencil, just like in a miter box.

Cutting with pencil marks

This is another way to cut a baguette evenly without a miter box.

For the inside corner. The plinth is applied to the ceiling as it will stand, to the left of the corner, and a line is drawn on the ceiling. Then the segment is applied to the other side, to the right of the corner, and a line is also drawn on the ceiling. The two lines should form an intersection point. Again, apply the plinth pieces one by one and lower a straight line from the intersection point to the bottom edge of the plinth; it will be the cut line.

For external corner. Place the plinth to the right of the corner and draw a line on the ceiling with a pencil beyond the corner of the wall connection. After this, apply the plinth on the left side of the corner and draw a second line to the intersection with the first. The intersection point is transferred to the upper edge of the baguette. The point where the corner of the walls and the inner bottom edge of the baguette meet will be the second mark. The two points are connected and the baguette is cut along the line.

Cutting wide molding with a pattern

If a large pattern on the surface of the border falls exactly at the junction of the internal corner, it will have to be adjusted, otherwise general form will be spoiled.

A section with a pattern is cut out from the ceiling molding, leaving a 5 cm margin on the sides. The resulting area is divided in half, that is, an even cut is made in the middle of the pattern. After this, the baguette is cut alternately in a miter box or by eye.

Some useful tips that will help you in your work:

  1. Before you start making final cuts, it is worth practicing on a small section.
  2. The baguette should be cut from the front side, then the unevenness of the cut will remain on the back side.
  3. The cut can be carefully trimmed with a knife or sandpaper.
  4. The baseboard should be cut on a hard, flat surface.
  5. If you use a miter box, for convenience it can be secured to the work surface with self-tapping screws.
  6. If the result is unsatisfactory and gaps at the joints are still visible, they can be carefully puttied.

If the corners in the room being renovated are even, you can buy ready-made corners to the selected type of baguette and completely avoid the stage of cutting corners.

Ceiling plinths are very often used for decorating rooms. They give the ceiling a complete look and allow you to convey a particular style in the interior. In addition, they serve to mask the joints between the walls and the ceiling, where the two join various materials. Although such elements are not always present in the premises, they make the interior more complete. In the material below we will describe in detail how to cut the corner of the ceiling plinth, since in such places the joining individual elements often poses a problem for inexperienced builders.

If the room has simple form, then only the internal corners will need to be cut. But in rooms of a more complex configuration, with columns, partitions and niches, there will also be external corners. In order for decorative elements to look beautiful, trimming must be done correctly and carefully, otherwise appearance the ceiling will be damaged.

To trim ceiling plinth in the corners as best as possible, you can use high-quality and sharp tools or other means. The type of tool that will be used to cut skirting boards depends on the type of material they are made from. Thus, ceiling plinths are made from PVC, polystyrene foam, polyurethane and wood.

Most cheap option– these are PVC skirting boards. They are soft, so it is easy to leave dents and creases on them that cannot be corrected in any way. In addition, this material has the property of attracting dust. For cutting such skirting boards, a hacksaw or sharp knife.

Another fairly cheap type of material is polystyrene foam skirting boards. They crumble easily, so to cut the corners of the ceiling plinth you should only use a sharp knife or a hacksaw. Movements should be soft, without pressure.

Cutting plinths to decorate the ceiling

Another type of ceiling plinths is made from extruded polystyrene foam. They are much denser than ordinary foam plastic products (therefore they do not crumble), they cost a little more, but they are also somewhat more difficult to cut. For work, you can use the same knife or hacksaw for metal.

The most expensive skirting boards are made from polyurethane. These are elastic, strong and moisture-resistant products that are very easy to cut with a construction knife. True, they cannot be used in all rooms, since polyurethane is sensitive to high temperatures– it becomes deformed, begins to crack or crack.


To work with wooden baseboards, only a hacksaw with fine teeth is suitable; you can use a metal tool.

However, many novice craftsmen are interested not so much in what, but in how to correctly cut the ceiling plinth in the corners. This process requires careful calculations and accuracy from the performer. In some cases, if the interior of the room allows, you don’t have to think about how to cut a corner on the ceiling plinth, but use ready-made corner elements. They can be purchased at construction stores. In this case, the plinth is simply cut straight and inserted into corner element. All irregularities and flaws will be hidden.

Using a miter box to cut baseboards

In carpentry, a special device made of wood, metal or plastic is often used - a miter box. There are special slots made in it that allow you to smooth cut at 90º, 45º, and at more complex devices– also at 60º. There are also professional miter boxes equipped rotating mechanism. In them cutting tool can be installed and fixed at any angle to the workpiece. Before you make a ceiling plinth in the corners, you need to understand the details.


To cut the inner corner of a ceiling plinth using a miter box, you must:

  • First, you need to attach the baseboard blank to the ceiling surface and mark the length.
  • Now the piece of plinth is placed in the miter box in the same position as it should be placed on the ceiling.
  • The plinth is pressed tightly against back wall miter box.
  • Hold the workpiece with one hand so that it does not move during cutting.
  • The hacksaw is installed at an angle of 45º to the workpiece.
  • Cut the plinth, controlling the degree of pressure of the hacksaw so as not to damage the product.
  • Then they move on to cutting the counter piece of plinth. It is also applied to the far wall of the miter box.
  • The workpiece is pressed and held by hand so that it does not move.
  • The hacksaw is installed at an angle of 45º to the workpiece so that the cutting direction is opposite to the first element of the plinth.
  • Cut off the corner of the plinth.

After trimming the ceiling plinths in the corners, they proceed to joining the resulting elements. If the cutting was done accurately, they will fit tightly together.


Let's look at how to cut the outer corner of a ceiling plinth using a miter box:

  • It is best to start marking and measuring the ceiling plinth from the inner corner, and only after completing it, start cutting the outer corner. Otherwise, the plank may be short and not enough to fill the entire length of the ceiling.
  • The plinth is applied to the ceiling and its length is marked.
  • Then the workpiece is placed in a miter box and pressed against the front wall.
  • The hacksaw is placed at an angle of 45º and, holding the workpiece with your hand, the corner is sawed off.
  • Similarly, it is necessary to cut off the opposite part of the outer corner.
  • The workpiece is pressed to the front of the miter box.
  • The hacksaw is placed at an angle of 45º to the baseboard and the workpiece is sawed off.

Upon completion of the work, the pieces of plinth are joined together, checking that everything is done correctly and evenly.

Marking on the ceiling to make a corner on the plinth

Exist different ways How to correctly make a corner on a ceiling plinth. Some are easier to do, others are more difficult. One of these methods is to mark the baseboard on the ceiling. True, cutting a plinth by weight is not very convenient, but it’s accurate this method not inferior to everyone else. Before cutting the plinth for the ceiling, it is applied to the surface, while all the imperfections and unevenness of the walls, as well as the size of the corners, are immediately taken into account.


Let's take a closer look at how to correctly make corners on ceiling plinths using this technique:

  • First, the two mating plinth strips must be cut at an angle of 90º;
  • One of the blanks is pressed against the wall, and its end is pressed against the opposite wall. Then the outline of the workpiece is drawn on the ceiling.
  • At the next stage, take the second plank and press its end against the wall in the same way. Draw a line.
  • At the intersection of the resulting lines, a point is placed at which further trimming of the skirting boards will be carried out.
  • Then each of the planks is applied to the ceiling in turn and the cutting point is transferred to the workpiece.
  • From this point, a diagonal cutting line is drawn into the corner of the plinth.

It is worth noting that this method More often used for internal corners.

Applying a miter box template

To cut the plinth in the corner of the ceiling as evenly as possible, you can use a paper, cardboard or wooden template instead of a regular miter box. Two parallel lines are drawn on it, then the central point is found and any necessary angle is laid off from it using a protractor. Before cutting the corner of the ceiling plinth without a miter box, it is worth double-checking the size of the internal or external angles between the walls of the room, using the same protractor.


The principle of cutting corners using a template is similar to using a standard miter box. In this case, the workpiece must be pressed against a parallel line and, setting the hacksaw at the desired angle, saw off the workpiece.

How to make a miter box yourself

Often, the only way to evenly cut the corner of a ceiling plinth is to use special devices so that the tool does not move to the side during the cutting process. In this case, you can make a miter box yourself.

Option 1. A box in the shape of the letter P is made from three boards. The required corners are marked on the walls of the box and slots are cut in the appropriate places. The result is a complete device.

Option 2. Sometimes it is quite difficult to make the corners on the skirting boards on the ceiling as even as possible, especially if you have to hold the workpiece in weight. In this case, you can use homemade device. Take two boards and knock them down into a corner shape. Then lines with the required angles are drawn on a sheet of paper or cardboard and the template is applied to the corner. Then press the plinth, place the template under the cutting area and saw off the corner along the lines.


Option 3. If you are still in doubt about how to properly cut the corner of the plinth, almost anyone can help with this household item, the shape of which allows you to form an angle. This could be a chair or a table, simply placed close to the wall.

To understand how to properly cut a ceiling plinth, you should also familiarize yourself with the rule for measuring workpieces. So, to make an internal corner, the length begins to be measured directly from the beginning of the corner. But to determine the external corner, it is worth considering that it will protrude into the space of the room by the width of the product.

There is no need to rush and fix the workpieces before the mating plinths in the corner have been completed. In order not to redo the work, you must first make sure that the joining surfaces fit tightly to each other and to the ceiling. Small defects can be corrected with a file, thin nail file or knife, depending on the material of the product.

If cutting the skirting boards in the corners did not work out perfectly, small cracks can simply be filled with putty. In general, the process of cutting skirting boards at the corners is not at all difficult. However, for practice, you can take several small pieces of baseboard and practice on them.


  • Adjustment of ceiling plinths to any angle
  • Installation of ceiling plinth

Every owner wants to see his house in perfect condition after renovation, but the seams are in the corners ceiling covering can spoil the impression of the new interior. To prevent this from happening, ceiling plinths were invented.

When choosing a plinth, you should pay attention to the material from which the plinth is made, as well as the color and width.

Adjusting the ceiling plinth is not very difficult, but, nevertheless, this process has its own difficulties. There are only two of them - this is not smooth walls and corner joints. If the first one is overcome quite simply, then the second one often has to be tinkered with.

  1. Square.
  2. Stationery or construction knife.
  3. Wood saw or jigsaw.
  4. Metal ruler.
  5. Miter box.
  6. Ceiling plinth.

Scheme for marking the left inner corner strip.

In order to properly fit the skirting boards, you will need whole line tools, most of which are found in every home.

The process itself is not very labor-intensive, but requires extreme precision. The seam at the corner of the joint should be not just even, but perfect. This is simply necessary so that it is not visible.

It is often necessary to resort to a double joint of skirting boards at one corner, especially in cases with external ones, but if done correctly this will play an extremely positive role, because the corner itself will be visually rounded. All work is divided into several stages.

Checking everyone ceiling corners for the presence of dust. Working surface It must be dry and clean so that the plinth fits tightly enough and then does not come off until the owners themselves want to remove it.

Using a square, the angle is measured. And happiness if it is 45 degrees, because... in this case, you can use a miter box (a tool that allows you to cut flat objects from plastic to metals at an angle of 45 degrees), but if the angle is different, then you will have to navigate in place, but the joint should be made strictly along the bisector.

Foam and lightweight plastics can be cut perfectly with a stationery or construction knife, while denser materials will have to be cut with a small wood hacksaw or a jigsaw with the smallest attachment. To do this, the plinth is secured in a miter box or any other improvised clamping stand, and in the first case a cut is made in one movement, and in the other a careful cut is made.

Scheme for cutting ceiling plinths in a miter box for arranging external and internal corners.

After completing the previous stage, the plinth is applied to the corner again and, based on the results obtained, markings are made for the next one.

This will make the joint as tight as possible. If, after cutting off the second ceiling plinth, it turns out that it was not cut, then all that remains is to simply trim both sides. But with external corners there are often situations when there is an extra cut and a gap results.

To correct the situation, exactly enough is cut from the first sample to obtain an identical deviation from the angle. And between them a narrow strip is inserted, which will simultaneously cover the defect and harmoniously round the corner of the ceiling plinth - many people use this option on purpose, because in most cases it is very useful for the interior.

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Putty will help close the joints between the baseboards. The paint will apply perfectly to it.

When everything is cut, you can start gluing. For some materials it is better to use glue, for others - silicone sealant, for working with others, both are suitable. After gluing, the final adjustment of the skirting boards takes place, where the fillets are correctly aligned and each corner falls into place.

The most the last stage The job will be to putty the cracks in the corners, walls and ceilings that remain. For this, acrylic putty is used, which is carefully applied along the entire perimeter of the ceiling plinth. When applying, it is important to take into account that accuracy is important here, and work done correctly without a single hit on the walls and ceiling will ultimately prove invaluable.

After the ceiling plinth is completely fitted, glued and greased, and the corners are butted, it should be left for some time in an unshakable state. In the very near future it will dry out and take on the state to which they tried to adjust the whole process. During operation, you should try not to touch the baseboard very often. wet cleaning, because many species are very afraid of this, become deformed and lose their appearance.

Correctly forming the corners of the ceiling plinth is very important: this finishing element is always visible.

A poor connection can spoil the impression of a repair. But this is not a simple matter: if you cut the baseboard at 45 degrees, you will not get the desired result (gaps will remain). Here's expert advice on how to file a corner of a ceiling plinth.

Trimming should be carried out along the outer edge of the plinth, as well as from the inside (when forming an external corner) or the front side (for internal joining).

If everything is done correctly, the texture of the cornice will not be disturbed. At home, foam finishing materials are most often used. The technology for joining elements is as follows.

  1. Using a protractor, measure the angle between the walls. If it is strictly equal to 90°, you need to cut the edges at 45°. The action is performed on both elements.
  2. If the joints between the ceiling and walls are not even, the corner radius should be divided in half. In this case, the baguette, which will be attached on the left side, is cut on the right, and the right element, accordingly, on the left.
  3. The edges of the inner corner parts are cut so that the top part is shorter than the bottom. The edges of the outer corner are formed differently: their lower part is shorter than the upper.
  4. Unlike foam baseboards, wooden parts must be precisely adjusted to each other and to adjacent surfaces, applying and cutting along the abutment line.

Ceiling plinth (corners): the photo demonstrates techniques for trimming and joining elements:

What tools can you use to cut corners?

  1. It is convenient to cut corners using a miter box and a miter saw. Small amounts of work can be completed hand hacksaw with fine teeth.
  2. If it is necessary to change the cutting direction, use a jigsaw.
  3. You can cut a narrow foam baseboard using a construction knife or a hacksaw.
  4. Markings are applied to the plinth with a simple pencil, the traces of which are erased after installation.

Cutting the ceiling plinth (outer corner): video with explanations will be good help for a novice master.


How to cut a baseboard without a miter box

Let's say you urgently need to glue the ceiling plinth.

How to make a corner without a miter box? This is possible, although it will take more time. You should proceed in this order.

  1. Both parts of the plinth are first cut at a right angle.
  2. The position of the elements on the wall is marked and a line for their joining is drawn. As a result, we will see two intersecting lines. The point of their intersection is projected directly onto the plinth parts.
  3. The plinth is applied to the ceiling and a cutting line is drawn from one edge to the other.
  4. Refinement of parts is carried out with a stationery or construction knife.
  5. A virtual miter box is depicted on paper with lines drawn at the required angles. The plinth fillets are applied to such a miter box and cutting is performed (while keeping the knife blade vertical).

How to cut a corner of a ceiling plinth: a video with expert comments will help you deal with this problem.

Advice! Since it does not always have perfect shape internal or outside corner, the ceiling plinth will have noticeable gaps at the joints.

To make them less noticeable, before gluing the baseboard, gypsum putty should be applied to its ends. After joining the elements, excess putty is removed rubber spatula. All gaps will be filled and the joint will be less noticeable.

It’s not easy to glue and correctly join the fillets with the pattern. What to do in this case? The video will tell you the answer.

Joining skirting boards using decorative corners

If the walls are ideally prepared and the external and internal angles are equal to 90°, it is possible to use special decorative elements to join the plinth fillets. The advantages of this method:

  • ease of installation: there is no need to “train your hand” by improving the technique of trimming plinth parts;
  • saving time: to join the elements you just need to cut them at a right angle and attach the decorative part.

The decorative parts themselves for joining fillets are designed:

  • for internal corner connections;
  • for external (external) corner connections;
  • for connecting straight parts.

This connection method is the only option in the case of installing a plastic baseboard, the trimming of which cannot be done without cracks.

Caulking the joints of ceiling plinths

No matter how carefully the work is done, the joints between the plinth fillets will be noticeable. This defect can be eliminated as follows.

  1. Glue is applied to the joints of the plinth.
  2. After joining the elements, remove excess glue with a clean rag. They do it after completely dry glue.
  3. The gaps between the baseboard, ceiling and wall are rubbed with the mixture gypsum putty and water-based paint using a rubber spatula.

This method is suitable for masking defects when joining wooden skirting boards, as well as fillets made of polyurethane foam, polystyrene foam, and expanded polystyrene. In some cases, white sealant can be used.

Using the tips outlined in the article and necessary tools, you can cut and join the fillets of the ceiling plinth yourself.

How to cut the corners of a ceiling plinth

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Proper cutting of ceiling plinths - how to do it?

Ceiling plinth is a decorative border between walls and ceiling. But it is often used to mask joints finishing material on the wall and on the ceiling, if it is not done carefully, or has a different structure.

Many people wonder how to properly cut the ceiling plinth, because without it, the design of the room seems unfinished.

This element is simply glued to special glue. But trimming the ceiling plinth in the corners to make them look presentable and neat can be a dead end for some. There are rooms with complex layouts in which it is necessary to arrange not only internal corners, but also external ones.

This question can be answered accurately if you know what material it is made of. this element decor. There are four types of fillets:

  • polyvinyl chloride (PVC);
  • polyurethane;
  • expanded polystyrene (foam);
  • tree.

The cheapest option is foam baseboards. But this is a very delicate material, creases and dents can appear on it, even from your fingers, if you press it harder, so it is very difficult to carefully trim the corner of a ceiling plinth made of this material.

In most cases, an inexperienced person throws away a lot of material for this reason.

They are electrostatic and attract a lot of dust. They are cut with an ordinary stationery knife. You can also cut it with a fine-toothed hacksaw, but you may end up with an uneven edge.

Polyvinyl chloride is one of the inexpensive materials, it is fragile and can chip when cut. You can cut the ceiling plinth from this material with a sharp construction knife or a hacksaw.
You should try not to use force when cutting; if you press, you may get a chip.

Polyurethane plinth stands more expensive than the first two options, it is much denser and tougher, and it is difficult to cut.

But there is a plus - when pressed it will not crumble. It is better to cut it with a hacksaw, but a sharp construction knife may work. The angle of the plinth made from this material is smooth and neat.

This decor option is this moment dearest. It is durable, moisture-resistant, elastic.

But fillets have big drawback- reaction to temperature changes. For example, in the kitchen above the stove, it can crack and become deformed, and it is almost impossible to process it, all that remains is to replace it. But this is not a panacea, it will crack again.

Wooden plinth is a natural solid and quite heavy material, which cannot be attached with glue. Cut it with a hacksaw with a fine blade, preferably for metal. This will make the edge of the trimmed baseboard look smoother.

We are talking about corner elements that are widely available.

Having purchased fittings for the corners, the baseboard itself can be cut to size, at an angle of 90 degrees. The corner element is glued to the corner, and the fillet itself is attached to it. This way you can hide all the flaws.

But it is not always possible to use fittings - they are much larger in size than the fillet itself, and the corners in such an interior stand out greatly, and this is not always aesthetically pleasing.

If this is not important, then of course it is better to buy a corner element and not have to worry about cutting the corners.

If you decide to cut the baseboards yourself, then use some tips on how to do it correctly.

Docking technology:

  • Measure the degree between the walls using a protractor. 90 degrees, then cut it to 45. If it’s different, then divide its value in half. Both elements are trimmed.
  • The plinth, which will be fixed on the left side, is cut on the right, and the right baguette on the left side accordingly.
  • The cuts of the inner corner parts along the edges should look like this, the top line is shorter than the bottom. External - on the contrary, the bottom line is shorter.
  • If foam baseboard in the corners can be adjusted, then with wooden parts this will not work and they will have to be adjusted very precisely until they fit completely.

A carpenter's tool that allows cutting workpieces at different angles - a miter box. This is a tray in which there are slots made at a certain angle. The material from which it is made may vary, for example:

A simple design has two types of angles 45-90 degrees, a complex configuration has 90-60-45 degrees. The second type of tool is considered professional.

Let's look at how to cut a ceiling plinth using a miter box:

  1. First you need to measure the required length of the plinth; to do this, we will attach it to the ceiling.
  2. The measured bar must be inserted into the miter box at a certain angle in the same position as on the ceiling.
  3. We move the bar to the wall of the apparatus opposite from ourselves.
  4. We press well with our left hand.
  5. The position of the hacksaw handle should be as close as possible to the left hand, and the angle will be 45 degrees.
  6. Carefully saw the plinth, without pressing.

One strip is ready, now you need to cut off the opposite strip:

  1. We place it against the wall of the miter box, but only on the opposite side.
  2. We hold right hand, pressing against the wall.
  3. You will have to saw with your left hand, but the hacksaw should be in the same position, only in a mirror image.
  4. Cutting off

Checking the joint - consists of placing the cut strips at the corners to each other. For accuracy, it is better to start trimming from the front side of the baseboard. If we're talking about about wood, the angle will have to be adjusted using a file.

External corner

  1. If the plank reaches both corners, then cut the inner corner first, and then the outer one. It may turn out that after trimming the corner, there will not be enough strip.
  2. As in the first case, we apply it to the ceiling to mark the dimensions.
  3. The plank must be positioned so that it is pressed against the near wall.
  4. We hold it with our left hand and place the hacksaw in a 45-degree position - the handle is close to the left hand.
  5. Let's cut it off.
  6. We set the second bar in the same way, but only hold it with our right hand.
  7. The hacksaw becomes a mirror image of the first option for trimming the baseboard.
  8. We cut it off.

It is worth noting that you will only need a miter box if all the angles in your apartment are 90 degrees. When the corners are not straight, you will have to use other trimming methods.

As you can see, cutting the ceiling plinth correctly using a miter box is not at all difficult.

Markings on the ceiling will also help you cut the plank with millimeter precision. This is not easy to do, since when trimming the plinth strip you will have to hold it suspended. But this is the most exact way adjust the angle on the ceiling plinth.

By placing the plinth against the ceiling, you will be able to see all the irregularities on the wall. The angle deviation is also visible and must be taken into account when trimming.

In order to make a trim correctly you need:

  1. Make a 90 degree cut on the workpiece.
  2. Attach the blank to the ceiling and outline its contours. In this case, it is necessary that it fits tightly to the perpendicular wall.
  3. Then we do the same on the adjacent wall, outlining the outline of the workpiece along the ceiling.
  4. We put a point at the intersection of the lines, this will be the reference point along which the corner of the plinth will be trimmed.
  5. On each workpiece, we alternately mark a cut point that coincides with a point on the ceiling.
  6. From the point to the opposite side, draw a line at an angle, along which you will need to cut the baseboard.

Once the markings have been made, you can properly trim the baseboards and try them on. It is worth noting that this method involves pruning with inside blanks.

To trim the baseboard, you can make a miter box template yourself. It is made from cardboard, paper, or wood. The principle is this:

  • draw two parallel lines;
  • determine the center;
  • draw the angles using a protractor.

Very convenient device, since it allows not only cutting angles of 90 degrees, but also higher. But before you do it, check the corners on the ceiling, in case they are uneven, and then the miter box imitation blank will have to be adjusted. Since cutting the baseboard evenly will not work.

You can cut a corner according to a drawn template in the same way as when using a real miter box. Only in this situation will we press the bar against the drawn parallel lines.

There is a rule according to which you need to trim the ceiling plinth:

  • To mark the internal corner, measurements are taken from the corner.
  • For an external corner, you need to know that the ceiling plinth will protrude into the room for a length equal to the width of the workpiece.

Do not glue the baseboard until both strips are prepared and tried on. Once the planks in the corner fit perfectly, you can coat them with glue and secure them.

If there are flaws in polyurethane or wooden baseboards, they are processed with a fine file. With plastic skirting boards you can use a sharp stationery or construction knife.

There is no need to despair if after fitting there is a gap in the corners, it can be masked using white putty. To do this, even before fixing the second plinth, which will be joined in the corner, putty is applied to the joint.

After the corner is secured and pressed, the excess mixture must be removed and the corner wiped with a damp cloth. If necessary, you can paint the joint water-based paint for ceilings.

How to disguise joints

With any careful work there are flaws, and installing ceiling plinths is no exception, especially if you are doing it for the first time and have no idea how to carefully cut ceiling plinths. Blemishes and defects can be removed as follows:

  • Glue is applied to the joints to secure the baseboards.
  • As soon as the glue dries on the joints, just wipe it off with a clean rag.
  • As for the gaps in the ceiling area, they are filled with putty and painted over. This should be done carefully with a rubber spatula.
  • If there are any at home white sealant, then you can use it to seal cracks, then you won’t have to paint the joints.

In custody

As you can see, the task of trimming the corners of ceiling plinths is not difficult, and anyone can master it.

You shouldn’t immediately start cutting corners on a whole plank; practice on small elements. And as soon as you start to succeed, switch to a solid baseboard. We hope from this article you learned how to properly cut ceiling plinths in the corners.

No matter what expensive repairs you undertake, you are unlikely to be able to avoid unevenness at the boundary between the wall and the ceiling. In order to hide them, use a ceiling plinth.

Types of ceiling plinths

Today on the market is huge assortment ceiling plinths. Here are the materials they are made from:

  • polystyrene;
  • polyurethane;
  • gypsum;
  • Styrofoam.

A wide variety allows everyone to choose the right one. Ceiling plinths are narrow and wide, the simplest and decorated with exquisite patterns and reliefs. So don’t neglect this construction find, because the ceiling plinth will give a completely finished look to your renovation and decorate any room.

Since installing ceiling plinths is not a difficult task, many people prefer not to spend extra money on skilled workers, but to install them themselves. How to correctly cut and attach a ceiling plinth? Let's consider this issue further.

Since the average person does not have many specialized construction tools, we suggest you familiarize yourself with the recommendations on how to cut the corner of a ceiling plinth using simple tools. To do this you will need:

  1. Miter box.
  2. Saw for metal.
  3. Sharp knife.

A miter box is a tray with special slots under different angles. Such a tool is a necessary thing in the household, and it is also inexpensive. To trim the corners of the plinth, you just need to take a miter box with angles of 90 and 45 degrees.

To cut the corner of the ceiling plinth, follow these steps:

As you can see, there is nothing complicated in this operation. But how to cut the corner of a ceiling plinth if you don’t have a miter box? There is an exit. You need to proceed as follows:

If in this case you cannot make an even cut, draw lines on a sheet or plank with a 45-degree intersection and attach the baseboard to them so that the line drawn on it corresponds to the indicated angle. It’s better if someone helps you in this case and fixes the ceiling plinth on a homemade miter box so that you can trim the edges evenly.

It happens that uneven walls do not allow the plinth to be glued evenly, even after it has been perfectly trimmed. In this case, you need to determine the degree of pruning individually. That's why it's so convenient to use a homemade painted miter box.

To avoid damaging the ceiling plinth, practice doing this on small pieces before cutting it. This way you can get better at cutting and make cuts more confidently every time.

There are now more than enough tips on how to cut a baseboard at 45 degrees on the Internet, the only bad thing is that most of them are given by people who have never done this. Next, from a practical point of view, I will tell you how to cut skirting boards at the corners with your own hands in 3 options, and you will learn how to traditional ways, and about folk universal recipes.

The science of how to properly trim ceiling moldings in corners is not as complicated as it may seem.

A few words about tools and materials

Floor skirting boards are now made of wood or polyvinyl chloride (PVC), in other words, plastic. For ceiling fillets, the list is a little longer:

The range of ceiling plinths is much wider than that of the floor type.

  1. Polyurethane - these skirting boards have good elasticity and can bend around radial and other curved surfaces, but in any case they need to be trimmed to precise angles;
  2. Foam plastic - the simplest a budget option, the price of foam skirting boards is low and they are very easy to cut;
  3. PVC - the principle is the same as for floor skirting boards, but the lineup much wider;
  4. Wooden - similar to floor ones, only here there are also wide models;
  5. Gypsum - with the advent of polyurethane and foam plastic, gypsum ceiling fillets faded into the background, firstly, they are heavy, and secondly, fragile. But to be fair, they are worth mentioning.

Since it is impossible to correctly cut the ceiling plinth and its floor counterpart without a good tool, we will dwell on this issue in a little more detail.

The best, practically perfect tool for trimming any skirting boards and more - this is a miter saw with a rotating bed. The high-speed disc makes smooth and precise cuts, and the bed in these units rotates to any angle. The only problem is the serious cost of this tool.

A miter saw is an almost ideal tool for cutting baseboards and more.

Considered one of the best hand tools for precise cutting of small bars - this is an abrasive saw. In principle, this is true, but I’ll tell you honestly, it’s not easy to find a really high-quality saw, even with the current assortment. If you decide to buy such a tool, then take a saw with a fine tooth.

Theoretically, foam and polyurethane can be cut with any sharp and durable knife. But at the same time you need to have a firm hand and at least a little experience in cutting foam. Plus, cutting wide fillets with a knife is very problematic.

Without experience, making a clear cut with a knife is very problematic.

Personally, if I don’t have a crosscut tool, I only use a hacksaw. It is suitable for cutting absolutely any material, from foam to wood. By the way, people often ask the question of how to trim plastic skirting board for the floor, so - take a hacksaw and you definitely can’t go wrong.

For cutting skirting boards, a hacksaw is considered one of the best tools.

Three working methods for trimming skirting boards

For floor and ceiling skirting boards, the cutting instructions are almost the same. But if on the floor a crooked corner can be covered with something, then on the ceiling this is already a problem, so we will pay more attention to how to cut the ceiling plinths.

Method number 1. Classic miter box

The classic miter box is a U-shaped box with slots in the opposite sides. A piece of suitable size is inserted into this stock and sawed off with a hacksaw through the slots in the sides. The idea is not new, the tool is already several hundred years old, but despite its simplicity, not everyone knows how to correctly cut the corner of a ceiling plinth using such a miter box.

Not everyone knows how to cut a ceiling plinth in a corner using a classic miter box.

Tip: when trimming ceiling plinths, they are applied to the side of the miter box that is closer to you, and floor skirting boards on the contrary, you need to apply it to the side of the instrument farthest from you. This is not a dogma, but it is much easier to work this way.

It is easier to work with floor plinths, since the miter box lies on a horizontal plane, it is easier for you to orient yourself in the position of the plinth. People most often make mistakes when cutting ceiling fillets; they simply insert them into the tool incorrectly. There is a simple but important rule here.

Important: the side of the ceiling fillet that touches the wall should be directed towards the upper edge of the side of the miter box, and that part of the plinth that borders the ceiling should be placed on the bottom of the miter box.

As you know, a corner has 2 sides, so in order to make fewer mistakes, train yourself to place the bar that will be mounted on the right side of the corner in the miter box on the right, and the bar that is attached to the left in the miter box on the left. The intricacies of using a classic miter box are described in detail in the video in this article.

In addition to the classic U-shaped miter box, there are two more types similar designs is a professional and rotary tool. Concerning professional version, then only masters use it. The device is quite bulky, but it rotates at any angle and has a hacksaw that can be locked in the desired position.

Professional miter box with the ability to fix a hacksaw and workpiece.

The rotating device can easily be called a “pocket” miter box. The only advantage here is the ability to clearly fix the angle of rotation of the bar. On the one hand, it’s easy to work with - set the corner, apply it to the baseboard and cut it off. But on the other hand, you need to get used to such a tool; if you do not have experience working with a hacksaw, then you should not take a rotary miter box.

Advice: when choosing a classic U-shaped miter box, first of all, do not buy Chinese products. And secondly, try to buy models with the ability to rigidly fix the part inside; one of these models is shown in the photo below.

A miter box with the ability to fix the part inside is much more convenient to work with.

Method number 2. Trimming according to a template

Most often, both ceiling and floor skirting boards need to be cut at 45º. If there is no specialized tool nearby, then an improvised miter box can be drawn on a piece of notebook paper. From school course geometry, we know that the diagonal of any square in relation to the base has an inclination angle of 45º.

Next you need to draw a square and draw 2 diagonals in it - this will be the required 45º. All you have to do is correctly attach the plinth to the leaf and mark. True, in order to cut the plinth smoothly without guides, you need a good eye and a steady hand.

Method No. 3. Applied universal

Trimming at 45º is a common option, but what if you need a different angle and only have a hacksaw and a pencil? It turns out that there is a very simple way out of this situation. Plus, this method is universal, it is suitable for both external and internal corners.

Moreover, I can assure you that those angles that visually seem straight, in fact have deviations of a couple of degrees. As a result, you buy good tool, you cut off exactly 45º, and when joining, a gap appears between the baseboards. Here this problem disappears. And then, using an example, we will look at how to cut the ceiling plinth in the inner corner.

Illustrations Recommendations

Stage 1.

Take the fillet, place it on one side of the corner and use it to draw 2 lines, along the wall and along the ceiling.

Advice: to make the lines unnoticeable, they can be drawn not with a pencil but, for example, with a nail or the tip of a knife.


Stage 2. You do the same on adjacent side corner.

Stage 3. If you draw a diagonal from the intersection of the lines on the ceiling to the inner corner, you will get the desired cutting line.

Stage 4. Next, take the tool and cut along the finished markings. If you are comfortable with a hacksaw, then the baseboards should fit together perfectly.

. As I already mentioned, you can trim the outer corner using exactly the same technology.

Important nuances

If you tried your best, but a small gap at the joint still “came out,” do not be discouraged. In wooden fillets, such a gap can be easily covered with furniture wax. To fill a gap on baseboards made of polyurethane, foam, plastic or plaster, putty is perfect. Naturally, the color of the composition must match the color of the baseboard.

All cracks in the area of ​​the ceiling fillets are sealed with putty.

Wide ceiling fillets are certainly beautiful, but they can only be mounted on perfectly flat walls. If the plane of the wall in relation to the ceiling is wavy, then it is better to buy narrow polyurethane fillets, they are elastic and will smooth out this drawback.

The most questions arise about how to cut wallpaper to fit the ceiling plinth. There is nothing complicated here: the wallpaper is glued with a slight overlap on the baseboards and when the wall is completely glued, take a large spatula, place it in the corner and cut off the excess along the blade with a knife.

But keep in mind - neither the knife nor the spatula can be removed from the wall until you have gone through the entire plane. That is, you put a spatula from the corner, cut the wallpaper along the length of the blade, and then, without lifting the blade from the wall, move and cut until you reach the next corner.

Conclusion

All three methods I described work; the choice depends on what tool you have and what your professional skills are. If after watching the video you still have questions, welcome to the comments, I’ll help in any way I can.

If you are not confident in your abilities, then for both floor and ceiling plinths there are joining elements that allow you to do without trimming.