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

Any repair requires attention to the smallest detail. The appearance of the room and its overall perception depends on how well the finish is done. To a greater extent, this applies to the ceilings, which in most cases are imperfect, so to hide all the imperfections (and walls), many owners use ceiling skirting boards, which give the room completeness. If the installation of baguettes in straight areas is not particularly difficult, the joints of elements in the corners require maximum accuracy. Therefore, many owners, who are planning, or have already started the repair, 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, depends on what material it is made of. Cutting is different, because 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. Foam is easy to scratch, damage at an accidental blow. Pros. minimum weight, which simplifies gluing, easy processing, the ability to paint in any color.

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 skirting board could crumble, so it would 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, but they are closer together. But Styrofoam will not tolerate a blade that is not too sharp, it will also crumble. Therefore, the master needs to prepare no less than a sharp instrument.

The main advantage of foam 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 using a different, more sophisticated technology. Conventional PPP is made with steam, which is passed through microgranules.

To obtain extruded polystyrene foam, the particles are mixed at high temperature and the same pressure, and then a foaming agent is added to the raw material. The size of the granules in this material is much smaller (maximum 0.2 mm), as a result it is less crumbly and more durable. Very sharp tools are not needed to cut it, but bluntness of the cutting edge is not welcome either.

Polyvinyl chloride

Plastic skirting boards (PVC) is another type of ceiling products. It is usually purchased for bathroom decoration. 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.

In general, these baguettes can be cut with a utility knife, metal hacksaw or a sharp kitchen tool. Since PVC products do not restore shape due to lack of elasticity, it is not recommended that they be pressed hard when cut.


This is another representative of polymer products. It is characterized by 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. Baseboards made of polyurethane do not crumble, do not deform, with honor endure almost any pressure.


This traditional material is cut with the usual joinery tools: for example, a jigsaw, hand or electric. The places of the cut are finished with sandpaper or a file. Since such products are more expensive than other skirting boards, when working requires accuracy. A serious mistake can easily be made, but there is no way to correct it. The consequence of negligence is the purchase of a new baguette.

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

Cutting with the jigsaw: the outer corner

Most often, when installing ceiling plinths, home craftsmen are interested in how to properly design inner corners in the room. Cutting outer corners is performed less often, but with a certain wall layout and it is necessary. Let’s look at how to properly make an interior fillet, using a special tool (chisel).

First you will need to buy a plane. This tool is a tray in which the part is fixed, and it is trimmed. In order to measure the length of the necessary product, you need to attach it to the ceiling. Next, you will need to install the skirting board in the jig. Its location should correspond to the position it will occupy on the ceiling.


Important! While cutting, it is necessary to hold the tack with the left hand. It must fit tightly against the wall of the tool. The part of the product, which will be fixed to the ceiling, should be on top. The other part is pressed tightly to the bottom of the working tool.

How to properly cut the inner corner of the ceiling plinth. not a simple question, to answer which the corresponding photos help. Experts recommend studying them, and only then proceed to work.

After you make sure that the product is positioned correctly in the tool, you can proceed with the cutting itself. The hacksaw must have a certain angle, namely: 45 degrees. During the work, it is not recommended to put a lot of pressure on the cutting tool, as you can damage the surface of the jigsaw. Then the adjacent fillet is trimmed, which is done in a “mirror” way.

Tools to be used

Depending on the material of manufacture, different tools are used for fitting baseboards: when working with wooden baseboards, wood hacksaws are used, and when working with plastic or polyurethane baseboards, it is better to use a hacksaw for metal. Styrofoam decorative elements can easily be cut with a regular, sharp office knife. In most cases, a plier is used, which allows you to evenly cut the baseboard at a certain angle. If you use a hacksaw for metal, you should not press too hard, as the cut may not turn out even, with burrs, and the material can be crumpled and lead to disrepair. Polystyrene and polyurethane ceiling plinths require careful handling.

If there is no experience with such tools, as well as elements of the decor, it is better to take a small piece of finishing material and practice with different force of pressure, which will later help in solving the problem.

How to join skirting boards in corners correctly

Properly shaped corners look attractive

As a rule, the design of corners, both internal and external, takes the bulk of the time. Due to the fact that the ceiling plinths are characterized by a very complex shape, then simply take and cut them at the right angle is not so simple. It is necessary to cut so that they dock in the corner without noticeable gaps. To get the corners literally perfect, there are several ways.

Using a chair

The mortiser, as a tool, is suitable if the corners of the room are joined at an angle of 90 degrees. The tool represents a groove, in the shape of the letter “U”, turned upside down. On the walls of the chute cuts are made at different angles. In order to cut the decoration element evenly it is placed inside the trough, and then the element is cut at the right angle using a hacksaw.

This is what the plane looks like. Can be plastic, wood or metal

Due to the fact that the skirting boards are complex in shape, they must be placed in the gutter so that they simultaneously pressed on two surfaces. the bottom and side. Depending on what corner is formed, the skirting is pressed to the bottom and side, or opposite, or near the surface.

As a rule, corners are trimmed at an angle of 45 degrees. First of all, you need to determine the length of the skirting board, placing on it certain marks. After that the element of decoration is placed in the jigsaw so that the mark corresponds to the maximum length of the element, and then the element is cut off. Remember also that the left-hand side of the baseboard is placed on the left side of the chair and the right-hand side is placed on the right side.

How to cut a corner on the ceiling plinth: properly set it in the jigsaw

Ceiling baseboards are attached to the ceiling with one hand and the other to the wall, so the part that is attached to the ceiling, laid on the bottom surface of the chair. It is very important to hold the baseboard firmly and securely in the process of cutting, because otherwise the cut surface is unlikely to turn out even and smooth. Having cut in this way the left and the right part, you will obtain either an internal or external corner.

How to cut a corner on the ceiling plinth: properly install it in the jigsaw

First, both parts are attached to the place of attachment without glue, to control the quality of work. If the corners do not match, they are corrected with a suitable tool. The advantage of polystyrene ceiling plinths is that small errors can be hidden by mashing them with putty.

After final inspection, a thin layer of special glue is applied to both surfaces of the baseboard.

How to make the inside corner of the ceiling plinth with a wire cutter

The technique of fitting ceiling skirting boards in the corners is almost the same, regardless of which corner it is, internal or external. After applying glue, the skirting board is pressed against both the wall and the ceiling. Naturally, the effort must be controlled, especially if the decor elements are made of foam. Not only that, you need to work with gloves on so as not to smear the surface of the skirting boards, which can easily get dirty.

corner, ceiling, plinth

The second way. without additional tools

For the internal angle, you can use the simplest way of perfect mating. by marking on the ceiling. Another example of how to cut a corner nice and flat.

The end result is an even angle of 45 ° if you run a line for the trimmer from the intersection point to the edge of the detail. Note that this method of marking works only if the corners are perfectly level.

Materials required

A set of tools for making a corner ceiling joint without using a jigsaw is not so great, and in principle does not differ from the set with a jigsaw. Almost everyone has these tools at home:

You can use a regular office pencil with a hardness of HB or a construction pencil, if you have one on hand. In all construction stores you can buy this pencil, it is rather cheap in the range of 50-100, depending on the manufacturer.

You will need a tape measure and a ruler for precise measurements and making straight lines. Please note that without a ruler you will not be able to hold an even line for trimming corners in the first method.

A construction or office knife with interchangeable blades is an indispensable aid at home. Its cost, like a construction pencil, is low, and it is always available, it will give you the opportunity to cut easily and evenly the necessary sections, cut a corner or cut thin plates when fitting the connection. Some skirting boards are made of material that should only be cut with a knife, not a hacksaw, because of the softness of the material.

You will need a hacksaw only if the material from which baguettes are made is recommended to cut only with it. The usual hacksaw with small cogs will do.

Ceiling skirting must be chosen for both aesthetic and practical reasons. It must fit harmoniously into your design, cover joints between the ceiling and walls, hide defects and irregularities. When choosing a molding, you need to consider the material it is made of. this affects the choice of trimming tool and glue for installation, as well as the type of coating on which the plinth will be glued.

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Trimming the fillet

Trimming with a power tool

How to evenly trim a ceiling baseboard corner with it?

The pliers are simple tools used by carpenters. With its help, 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 can be complicated constructions, which in addition to the named corners also have a hole to make a 60-degree cut.

For professional work, a special plane is available. Its pivoting mechanism allows the cutting blade to be fixed in relation to the workpiece at any given angle.

Internal angle

Prepared plinth attached to the ceiling, put the required length.

Then this same strip is inserted into the chisel exactly as it will be located on the ceiling. It must be pressed against the far wall of the device. Hold the skirting board in this position with the left hand.

corner, ceiling, plinth

The blade of the hacksaw should be in such a position, so that its angle is 45 degrees, and the handle is as close to the hand as possible. Trying not to put pressure on the saw, we carefully cut the piece.

corner, ceiling, plinth

Further it is necessary to cut a counter batten at a plinth. It is also placed against the far wall of the tool, held and pressed, this time with the right hand.

Similar to the previous procedure is the position of the hacksaw. its handle is close to the hand at an angle of 45 degrees. The baseboard is trimmed.

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

External corner

It is correct, to observe more precisely the measurements, to begin to mark the internal corner at first, and only then proceed to the external one.

Otherwise, it may happen that the entire length of the slat is insufficient.

The strip is placed against the ceiling, and marks are made according to its size. Holding the left hand, the ceiling plinth is pressed to the nearest wall, with the handle of the hacksaw close to the hand. The piece is cut off.

The counterblade is pressed against the nearest wall, holding it in place 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 master. A piece of the workpiece is cut off, and the corner is accurately joined together.

This processing of the edge of the parts with a mash is good in cases where the angle between the walls is flat and straight (90 °).

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

Marking on the ceiling

The method with a marking on the ceiling allows you to cut a corner accurately and evenly. It has one drawback. the baseboard plank is quite inconvenient to hold by weight during the procedure.

In all other cases, using this method, you will be able to mark the angle of the cut even more accurately than other methods.

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

Trimming the corner

First take a pair of blanks, then trim them at a right angle. Perpendicular to the wall, against the end of the slat we will put one slat. We draw a trimmer line on the ceiling along the contour of the baseboard. Remove the first skirting board and then, by pressing its end against the wall, enclose the counter skirting board. In the same way, we mark the trimmer line on the contour.

The crossing point of the two lines is the point at which the piece is cut. Each skirting board is put on the surface again, and the point of the future cut is marked on both of them. From the found point to the other edge of the baseboard plank, we draw the trimmer line. The skirting boards are cut following the previously made marks, neatly joined, and then placed in their installation location.

This method allows you to handle inside corners more accurately.

How to trim a ceiling plinth properly. Important details

Measurements needed to trim the ceiling plinth, should be made in a special way. To find and mark the inside corner, the length must be measured from the corner itself. To determine the outer corner, it is obligatory to take into account that the skirting board will extend into the interior of the room at a distance that equals its width.

It is not desirable to fix the skirting boards until their exact positioning is verified and the counter skirting has been trimmed. Only after a perfect convergence in the corner of the two mating strips can you begin mounting and fastening. If you work with polyurethane or wooden skirting boards, you can fix imperfections and errors with a file or file. To fit the product of foam plastic, you should arm yourself with a sharp knife.

If even after finishing plinths remain even a small gap, do not rush to get upset. it is not difficult to seal it with an ordinary putty. It is not that difficult to cut a ceiling plinth accurately and neatly. But to acquire at least a little skill, first try to practice on small workpieces.

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