How to cut a ceiling plinth without a joiner

How to cut a ceiling plinth: work with or without a tool

Any repair requires attention to the smallest detail. On how well the finish is made, depends on the appearance of the room and its overall perception. To a greater extent this applies to the ceilings, which in most cases are imperfect, so to hide all the imperfections (and their walls), many owners use ceiling skirting, which give the room completeness. If the installation of the baguettes in straight areas does not cause any special difficulties, then the joints of the elements in the corners require maximum accuracy. Therefore, many owners who are planning, or have already begun repairs, are interested in how to cut the ceiling plinth, what tools can be used for this stage of the work.

The answer to the question of how to cut a ceiling plinth, depending on the material it is made of. Cutting is different, as the baguettes have different density. Therefore, the first thing to consider is the most popular materials, and at the same time the peculiarities of their cutting.


Such products have the lowest price, because the material is very unstable to mechanical influences. The foam is easy to scratch, damage if accidentally hit. Pros. minimum weight, which simplifies gluing, easy processing, the ability to paint in any color.

ceiling, plinth, joiner

This foam material consists of small granules, which are quite easy to separate from each other. However, they are the main disadvantage of such baguettes. They require a very sharp tool. Otherwise, the plinth can crumble, so it will be unsuitable for installation. This is true for both angled and straight cuts.


This contender is more expensive, but it does not differ from the first candidate very much, because it is a “relative” of Styrofoam: it is produced from expanded polystyrene. This material also consists of small granules-bubbles, but they are adjacent to each other is tighter. But polystyrene foam will not tolerate a blade that is not too sharp, it will also crumble. Therefore, the master needs to prepare not less than a sharp instrument.

The main advantage of expanded polystyrene and polystyrene foam is their softness, which allows you to avoid gaps by pressing the workpieces tightly to each other and to the corners.

Extruded polystyrene foam

EPPS is made from the same raw materials as conventional polystyrene foam, but in this case uses a different, more sophisticated technology. Conventional EPS is made with steam, which is passed through the microgranules.

To obtain the extruded polystyrene foam, the particles are mixed at high temperature and the same pressure, and then added to the raw material blowing agent. Granule size in this material is much less (maximum 0,2 mm), as a result it’s less crumbly and more durable. Very sharp tools are not required to cut it, but bluntness of the cutting edge is also not welcome.

Polyvinyl chloride

Plastic skirting boards (PVC). another type of ceiling products. Usually they are purchased for decoration of bathrooms. If we consider the topic “How to cut a ceiling plinth“, in this case they are exceptions, because to dock them use special, ready-made corners.

Generally speaking, these baguettes can be cut with a box cutter, a metal hacksaw, or a sharp kitchen tool. Since PVC products do not restore their shape due to the lack of elasticity, it is not recommended to put a lot of pressure on them when cutting.


This is another representative of polymer products. It has a high density and lacks the disadvantages of previous competitors. It is easy to cut, so the tool must be sharp, but there are no maximum requirements for its sharpening. Polyurethane skirting boards do not crumble, do not warp, and can withstand almost any pressure with honor.


This traditional material is cut with the usual joinery tools: for example, a jigsaw, hand or electric. The places of the cut are treated with sandpaper or a file. Since such products are more expensive than other baseboards, care is required when working. It is easy to make a serious mistake, but there is no way to fix it. The consequence of negligence will be the purchase of a new moulding.

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The ideal tool for cutting wooden workpieces will be an electric mitre saw. Its biggest disadvantage is the high price, especially for quality models. On the other hand, buyers have the opportunity to find an inexpensive tool that will do a decent job.

Chisel for baseboards: basic rules for use

Everyone will be able to understand how to properly cut the corners of a ceiling plinth. For the process to go smoothly, you should familiarize yourself in advance with the basic ways to create beautiful and even workpieces.

The main rule of work. observance of the angle of inclination. If the plinth is fastened to the right, the corner will be cut from the left side, and vice versa.

The mortiser is a handy tool for fast work pieces

Polyurethane ceiling plinth: what is it, advantages and disadvantages, what it consists of, what kinds there are, how to choose, step-by-step installation of a molding, coloring, restoration methods, average cost. in our publication.

First of all, when calculating the right direction for the cut, you need to remember one thing: in contrast to the usual plinth, the ceiling plinth is installed on the base at a certain angle, usually 38-45 °, so exactly measure the “right” 45 ° will be very problematic.

Therefore, when cutting the ceiling plinth, it is necessary to keep it in the position in which it will be installed on the surface.

The chisel is a device for cutting the baseboard at a certain angle.

This can be done with a wire cutter. a small plastic or wooden tray with notches for the hacksaw at angles of 90° and 45°. The trimmer can be bought in almost any construction store.

We will also need a fine-toothed wood saw, or better yet, a metal saw. However, when using hand saws, you need to be careful. there is always a risk of damaging the material. If you are dealing with the most common types of ceiling plinths. foam plinths, then a wallpaper knife with a new sharp blade will do.

The main task is to determine how the cut lines will run on the joined “left” and “right” parts of the baseboards. If the corner is uneven or irregular, you need to find its middle. there should be a line to trim the junction.

Place the skirting board in the plane as it is going to be glued to the wall: hold the upper edge (a) of the element and press the lower edge (b) to the wall of the plane.

So, first, you need to put a straight bar to the corner of the room and visually determine the line for the trimmer cut (if the angle in your room is flat, that is about 90°).

Next, put it in the jigsaw and put it under the desired hole for the cut. Tutel in the chair should be put so that it lies at the angle at which it will be attached to the wall, that is, in the corner. Now all that’s left to do is saw or trim with a knife.

If you are using a hacksaw for metal. make light movements, do not allow the pressure, it will lead to rips or chips (applies to plastic). In order not to confuse the materials, put a mark on the inside of the ceiling baguette with a marker or pencil. Note that for external and internal corners the direction of cutting will be different, so it is recommended to mark directly on the jigsaw: to sign the holes for the “right” and “left” fillet external and internal corners.

The drawing on the table simulates a jig. However, instead of pressing the skirting board to the edge, as in the jig, we expose it on the line. For your convenience, you can put a rectangular object on the line to create a curb.

If you can not get a plane, you can try to make it yourself from improvised means. In the end, you need to knock down two pieces of wood, because the main thing. to securely hold the baseboard in the corner, when you cut it. And in order to evenly and correctly make the cut, we need a stencil.

It can be made of thick cardboard so that it exactly repeated the angle between the walls. If the walls and ceiling are uneven, the corner is divided in half. there will be a line to trim the cut. Made by you from planks put a corner on the stencil so that the edge of the corner was exactly above the stencil corner.

See also  How to cut the corner of a ceiling plinth

Now you need to insert it (the “left”) tack and carefully saw, focusing on the contours of the stencil. To cut the “right” you need to move the corner to the appropriate side. You can think of other devices to cut the right angle for the ceiling plinth, using the same principle.

How to trim a baseboard in the corners without a chisel

It seems that it is easy to cope with the jigsaw, but the angles are not always equal to 90 degrees. This method will help solve the problem of properly trimming the baseboard in the corners quickly and without too much hassle.

ceiling, plinth, joiner

The procedure to properly trim the skirting boards in the corners without a jigsaw:

Join the skirting boards with decorative corners

If the walls are perfectly prepared, and the outer and inner corners are equal to 90°, it is possible to use special decorative elements to join the skirting boards. The advantages of this method:

  • ease of installation: there is no need to “get a knack”, perfecting the technique of trimming parts of the baseboard;
  • Saving time: to dock the elements you just need to cut them at right angles and attach the decorative part.

The decorative parts themselves for docking the skirting boards are designed to:

This method of connection is the only option in the case of installation of plastic skirting boards, trimming which can not be performed without slots.

Trimming ceiling skirting boards without a jigsaw

The walls in the room are not always straight, they may not be between them at all 90°. How to cut the ceiling plinth in this case? You can use a simple marking on the ceiling.

  • Cut the baseboard at a 90° angle, apply it to the ceiling, pointing at the corner of the wall.
  • Run a trimmer line over the ceiling surface with a pencil over the trimmer strip. Repeat the process with the second skirting board.
  • At the point where the lines intersect, cut the fillet. A trimmer line should run along the part of the skirting board that is against the wall.

If you do not have a tape measure, you can measure the angle by hand

When cutting the ceiling skirting be sure to note that the inner corner is measured directly from the corner, and the outer will protrude into the depth of the room. So it’s better to start with cutting the inside corner, and then move on to the outside corner. Glue the strip after the two joints formed by the mating strips have been joined together.

What to do if gaps remain?

If defects are detected after the work is completed, few people like the prospect of redoing it. In this case it is easier to disguise them with one of the compositions. The best option for such processing will be the final acrylic putty. It has a white color and is very plastic. The material is taken with your fingers, then it is pressed into the remaining gap, gently distributing in the hole, smoothing. The remaining composition is removed with a damp cloth. As a rule, traces of imperfections at the joints do not remain.

How to cut a ceiling plinth? Need to stock up on the necessary tools and patience, because haste always provokes mistakes. The main thing in this case is to choose the optimal method. But care and accuracy are no less important: baseboards are made of not too strong material (except for wooden baguettes). They are fragile, so excessive force when working with such products is contraindicated.

On how to cut a ceiling plinth, the author of the following video, which viewers consider the easiest and most understandable, will tell:

Trimming the fillet

Trimming with a power tool

How to evenly cut the corner of the ceiling plinth with it?

A chisel is an uncomplicated tool used by carpenters. With it you can cut any workpiece at the desired angle.

It is usually a wooden, metal or plastic tray, which are made to cut at an angle of 45 ° and 90 ° special vertical slots.

There are more complicated constructions, which in addition to the named corners also have a hole to make a 60-degree cut.

For professional work, a special plier is available. Its rotary mechanism allows you to fix the cutting blade in relation to the workpiece at any given angle.

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Inner angle

The prepared skirting board is attached to the ceiling, the required length is postponed.

Then this same bar is inserted into the jig precisely as it will be positioned on the ceiling. It must be pressed against the far wall of the tool. In this position the skirting board is held with the left hand.

The blade of the hacksaw should be in 45 degree angle, with the handle close to the hand. Trying not to exert pressure on the saw, we carefully cut the workpiece.

Next, a mating strip must be cut off at the baseboard. It is also placed at the far wall of the tool, held and pressed, this time, with the right hand.

A similar position to the previous procedure for the hacksaw. its handle is brought closer to the hand at an angle of 45 degrees. The skirting board is then cut.

Then the finished, already cut slats are joined together. the accuracy of fit is checked. It is believed that for better orientation, when making the inside corner, it is better to start cutting from the front part of the product. The places of cuts usually have to be further trimmed with a file.

Outer corner

The correct way to observe more accurately the dimensions, first begin to mark the inner corner, and only then move on to the outer.

Otherwise, it may happen that the entire length of the strip is not enough.

The strip is attached to the ceiling, the size made marks. Holding the ceiling plinth with the left hand, the ceiling plinth is pressed against the nearest wall, with the handle of the hacksaw close to the hand. The workpiece is cut off.

The counter batten is pressed against the nearest wall, holding it with the right hand. The blade of the hacksaw should be at an angle of 45°, the handle of the tool is close to the hand of the craftsman. A piece of the workpiece is cut, the corner is neatly docked.

Such processing of the edge of the details with mash is good if the angle between the walls is flat and straight (90 °).

If its performance leaves much to be desired, then it is worth using another method.

Marking on the ceiling

The method with marking on the ceiling allows a precise and even cut corner. It has one disadvantage. it is quite inconvenient to hold the baseboard plank by weight during the procedure.

In all other respects you can use this method to mark the corner for cutting even more precisely than other methods.

When the skirting is applied to the intended place of installation, all dimensional deviations and inaccuracies are visible and immediately taken into account.

Trimming the corner

First take a pair of blanks and then cut at a right angle. Perpendicular to the perpendicular wall against the end of the slat, add another slat. Using a trimmer line on the ceiling, we mark the contour of the skirting board. We remove the first slat, then the same way, resting against the wall end, we enclose a counter slat. Mark in the same way along the contour the line for the trimmer.

The intersection point of the two separate lines is the mark at which the workpiece is cut. Each slat is placed on the surface again, on both marked the point of the future cut. From the found point to the other edge of the plinth trimmer line draw. Baseboards are cut according to the marks made earlier, neatly docked, placed in the place of their installation.

ceiling, plinth, joiner

This method allows you to process inside corners more accurately.


Wood baseboards are different from their counterparts. The wood has a fairly large weight, which affects the weight of the products from it. The plinths as a result are quite dense, very resistant to mechanical damage and solid, which allows not to be afraid of accidental deformation during installation or slicing.

To trim a wood fillet, it is best to take a fine-toothed hacksaw designed specifically for fine work with this material. However, a good option will also be a good quality blade on metal.

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