Shtroblenie wooden walls for wiring. Tips from professional craftsmen on the rules for cutting walls for wiring with your own hands

Overhaul, redevelopment, new construction of a house or utility room are associated with the issue of connecting or transferring sockets, switches, laying a new cable, masking pipeline systems. V wall panel hide all communications up to 1/3 of the floor thickness.

Overview of tools for chipping walls for wiring

The classic tool is a hammer and chisel. The variant is suitable for chiselling short grooves in a soft pliable volume. It is not rational to use this method for concrete or brick. Disadvantages: high labor costs, long-term work, the final result of poor quality.
Perforator with a special attachment. Works are carried out in solid volume, reinforced concrete and brick. The final result is of average quality: the edges of the grooves are uneven, chipped and require additional rework. The disadvantage of the tool is that it emits a high noise level of more than 100 dB.
Grinder with a diamond disc. Excellent option, perfect quality of the groove. The disadvantage of this option is the emission of dust disproportionate to the quality. Advantages: perfect result, fast work completion, productivity, low-budget method. Easy to use tool.
Wall chaser. Counts the best option for laying wiring in walls. The device comes complete with removable discs, with a dust collector. Disadvantage of the method: an expensive tool.

Tips from professional craftsmen on the rules for cutting walls for wiring with your own hands

Structural wall structures, floor slabs, horizontal joints are unsuitable objects for wiring.
When drawing up a drawing, the wiring is taken into account important condition- wires are located strictly horizontally or vertically. Driving a groove is outlined on the surface with a level or plumb line.
The horizontal laying of wires is carried out, maintaining a distance of 15 cm from the floor slab.
In structures from 8 cm, the wire is laid along the shortest path.
Do not run wiring in corners, close to window or doorways... The recommended distance from such places to the gates is at least 100 mm.
To lay wiring in old walls, check the places of possible passage of the current-carrying cable. Use a screwdriver-indicator or a finder for control.

Wall slitting technology for wiring

Concrete wiring done early renovation works... Curtains in a populated area are undesirable due to the high concentration of cement dust. Preparation for work in a living room provides for the dense conservation of office equipment, furniture, flowers, the presence of a construction vacuum cleaner for cleaning garbage and dust. Before starting work, they check with the plan for laying the old wiring, de-energize it or bypass these places. There are several concrete slitting technologies:

Slitting with a hammer and chisel. The process is broken down into several steps for simplicity. At the first stage, a groove is marked with a chisel along the edges of the puncture to the width of one or two of its points. Next, the chisel is placed transversely to the furrow and one part of it is driven into the wall with a hammer. First removed upper layer according to the markings, and then deepen the groove made by 25 mm along its entire length. This sequence of actions is not so important, since the deepening is allowed immediately during the making of the groove. This method is completely unsuitable for slitting concrete walls for wiring, since the material is too hard for handmade holes.

The next way is to chisel the walls for wiring with a puncher. Work begins with marking the required area. The nozzles required to complete the grooves are a small drill and a blade. Along the entire length of the line along which the strobe will be performed, holes are made 25 mm deep. 10-15 mm recede from each hole made and do the following. Next, a ditch is made through the finished holes. When arranging it, the scapula is not placed across the intended line, as this leads to the chipping off of excess pieces of the wall covering. With the help of a hammer drill, a groove is made for the wiring of the required width and depth, and these indicators are obtained very accurate. The only drawback is that the edges of the groove are often torn, it is not very neat appearance... With the help of a puncher, the chasing is carried out as quickly and accurately as possible.
Grinding walls for wiring with a grinder. To carry out these works, you will need a diamond-coated disc. It allows you to easily perform work on concrete and brick, in contrast to conventional nozzles, which are difficult to cope with these types of materials. Even if the work will be carried out on plaster, the diamond disc will make the groove faster and easier. At the beginning of work, the necessary lines are marked, then two parallel lines are made according to the marking, the width between which is equal to the required width of the groove. Between the finished cuts, a groove is knocked out with any convenient tool - a chisel or a perforator. The groove is knocked out to the required depth. This method differs from the previous two only in the use of a grinder, which greatly facilitates the process of making cuts for a groove. When cutting cuts with a grinder, a large amount of dust is released. It is recommended to use an industrial vacuum cleaner to collect dust, or simply to protect all objects in the room from debris falling on them.
Making a groove for wiring using a wall chaser. As the name of this tool implies, it is designed just for making strobes and is used by professional builders. The wall chaser is similar to a modified version of the grinder, it has connectors for installing two diamond discs at once, with the ability to adjust the distance between them. The tool cover is also adjustable, which provides a fixation of the depth at which the discs will cut the groove. Often the tool has a special dust outlet on the casing, to which the vacuum cleaner pipe is attached. The slitting is quick and easy with little dust. When the cuts along the edges of the groove are ready, the excess material between them is knocked out with a puncher or chisel. The disadvantage of using a wall chaser is that the price increases for wall chasing for wiring if this device is used. It is quite expensive and is used only for specialized work. For household gouging, it is best to opt for the option for which all the necessary tools are available.

The completion of the work has the same actions, regardless of what technology was used to make the groove. When the groove is completely ready, it is cleaned of construction dust with a vacuum cleaner or a broom. The groove cleared of debris is treated with a primer. Laying the cable into the wall is another complex technological process that needs to be approached with maximum attention. The laid cable is fixed in the groove and covered with plaster, putty or gypsum.

Some rules for chipping in a concrete wall

Most buildings are made of concrete, therefore, when laying electrical communications in the wall, most often you have to deal with this material. General principle work on concrete is no different from the technologies described above. All the tools described are suitable for him, except for the chisel. However, there are some general rules for concrete slitting.

When choosing a slitting technology, choosing between the option of performing work with a grinder or a perforator, it is better to stop at the second option. Rock drills are more powerful machines that are designed to work on hard surfaces. In addition, during the manufacture of holes, such an amount of dust will not be emitted as from working with a grinder. It is recommended to carry out work in multi-storey buildings in daytime and only on weekdays. The noise level from the hammer drill is so great that its operation will be clearly audible even through several floors.

During work, it is recommended to use the services of an assistant who will moisten the work surface while making holes. This method is widely used by builders, it allows you to reduce the amount of dust flying around the room. The disadvantage of this method is the complexity of the work, the damp wall is less amenable to slitting.

To work on concrete, builders do not recommend using a wall chaser, since in this surface it will not remove a significant part of the material and after it you will have to clean up the remnants with a puncher. Therefore, to facilitate work on concrete, the perforator is immediately used as the main tool.

Structural work in the load-bearing wall

The ability to carry out work on chipping in load-bearing wall- that's a moot point. It is forbidden by law and all architectural norms to carry out any work in the load-bearing partition that weaken its load-bearing capacity. Strobing refers to this type of work. During the removal of the top layer, the reinforcement is exposed, it becomes susceptible to various influences and the formation of corrosion. If corrosion of the reinforcement begins, the entire structure of the house is weakened.

To carry out such work in a load-bearing wall, you must obtain a special permit for this. If we are talking about a panel house, then, most likely, a work permit will be refused. V brick houses such work is most often allowed. After receiving the papers, all work is carried out very carefully in order to reduce damage to the wall to a minimum level. To determine the location of the reinforcement elements in the wall, use a standard metal detector. He talks in more detail about how the walls are channeled for wiring, the video at the end of the article.

Installation of wires in the strobe and installation of sockets

The wires in the strobe are laid in two ways. The first provides for the laying of cable channels for wiring. In this case, the pipe itself is first laid in the strobe, and then the wires are pulled through it to the location of the sockets or switches. The wire is pulled into the pipe using dense steel wire. If the installation of the wires is carried out without using a pipe, then they are fixed in the groove using plaster, plaster or putty. The wires connected to the socket boxes are cut, leaving a length of 10-15 cm, the left end is tucked into the hole for the outlet.

The most convenient installation of sockets is in blocks in one frame. Not only are they placed in one block electrical outlets, but also connectors for cable TV, telephone, internet, etc. Such blocks can significantly save space and create an attractive aesthetic technical corner in the room. The blocks are mounted on special latches, they are combined even before installation, and only then they are installed in a solid block into the prepared holes.

The holes for the block are drilled in one piece, a gap of no more than 1 mm is left between them, and the central partitions are removed. Thus, the unit is completely wall-mounted. The frames and metal frames of the sockets must be in close contact with each other. After equipping the unit and connecting communications to it, plastic socket frames are installed. this work It is carried out after the installation of the finishing materials on the wall, since the frame of the outlet is designed to hide all the flaws of the decorating elements. When wallpapering under the outlet, their edges are wrapped, but if the wall is painted, then the overlay will hide the seams and chips at the place of manufacture of the opening for the sockets.

To install the switchboard, a rectangular hole is made in the wall. The size of the hole in depth, width and height is adjusted to the size of the future shield, leaving a small margin. First, the shield body is installed in the niche, it is fixed with a solution with gypsum. At this stage, the installation hidden wiring considered complete. Switchboard equipment refers to electrical work and is carried out taking into account the rules from the operating manual.

The most popular and safest option for wiring is hidden.

In this case, power cables and wires are mounted in special grooves made of various materials on the surfaces of walls and ceilings. This process is called chipping and is carried out with professional tools.

Let's figure out how to properly line the walls for wiring and what rules to adhere to when carrying out work.

Important rules for gouging surfaces

Installation of electrical wiring is carried out in a closed way. After the completion of the work, all grooves are carefully sealed with plaster, putty mixture or gypsum.

The rules for the distribution and laying of electrical wires in buildings and structures are strictly regulated by the current building codes. Therefore, when arranging a strobe, you must adhere to the following rules:

Slitting is carried out only in the vertical and horizontal direction. Inclined grooves are arranged in rooms with beveled surfaces of walls and ceilings - attics, attics, stairs.
The width and depth of the strobes is determined by the section of the wiring. Optimal dimensions: depth - 25 mm, width - 30 mm. When laying wires in corrugated hoses or metal trays, the depth can be increased up to 35 mm.
The maximum permissible length of one channel from the switchboard to the electrical accessories (sockets, switches) is 3 meters.
The minimum permissible distance from engineering equipment ( heating appliances and gas risers) to horizontal channels is 50 cm, and from floor slabs - 18 cm.
Optimal distance from corners, doors and window openings is 12 cm.
When arranging a strobe under the ceiling surface, an indent of 20 cm is made from the upper corner.
In the presence of metal frame in monolithic reinforced concrete walls, its cutting or damage is not allowed. The wiring is carried out without disturbing the steel support.
Power cables are not laid in load-bearing walls, columns and floor beams multi-storey buildings, which can lead to weakening of the finished building structure.
It is forbidden to intersect individual elements of electrical wiring during their installation.
With a low position of the electrical accessories on the wall, the grooves can be arranged in the floor or the cable can be wound through the floor plinth.

Competent preparation of the working drawing and strobing in accordance with the established rules guarantee the safe and uninterrupted operation of hidden electrical wiring.

Surface marking for wiring

Wall shaping is carried out in accordance with the developed wiring diagram. If the redevelopment of the premises is envisaged with the laying of new wiring, a check of the existing wires is carried out along the groove route.

For this, a special wiring detector is used. The layout of the wall surface is performed as follows:

On the surface, a route for laying power cables is drawn in the form of horizontal and vertical lines using a building level.
The location of electrical accessories is determined: switches, sockets, dimmers, thermostats.
The doorway is covered with a clean cloth or foil to prevent dust from entering other rooms.

Overview of tools for making strobes

Professional tools are used to equip the strobes for power cables.

The most demanded of them are:

hammer and chisel;
puncher;
grinder and grinder;
wall chaser.

Hammer and chisel

Hammer and chisel are standard tools for making wiring gates. They can be used to create short and shallow channels in soft materials such as wood, putty and plaster.

The working process is carried out in stages. The bit tip makes small indentations along the edges of the channel. Then, using a hammer, the core of the cavity is knocked out for laying the cable. To obtain the required groove depth, the removal of each subsequent layer must be carried out evenly.

The disadvantages of this method of strobing can be attributed to the laboriousness, high time costs, low quality of strobes.

Rotary hammer with attachments

A more professional tool is a hammer drill with special attachments that allow you to easily groove hard materials - concrete, brick and aerated concrete.

The perforator is used for arranging cable channels and fittings for electrical fittings. For work, there are two types of attachments - a shovel and a wide drill.

The work is carried out as follows:

using a puncher, small holes up to 2.5 cm deep are made in 1.5 cm increments along the planned cable laying line;
the vane is set at a 45 degree angle to connect the holes into a single groove.

This method provides for a smoother groove with minor surface chips that require additional processing.

A significant disadvantage is the high noise performance (95 dB).

Bulgarian

Using a conventional grinder ( grinder) you can quickly and efficiently grind a wall made of brick, concrete or with a plastered surface. A diamond disc is used for work.

Wall slitting for wiring is performed as follows:

along the line for a groove with a grinder, two cuts are performed parallel to each other with the required parameters in length and width;
a rock drill or chisel removes material within parallel lines to the required depth.

The grinder allows you to get a flat channel along its entire length. The only drawback of the tool is the large amount of dust generated during the work.

Wall chaser

This is the fastest and most professional way to grind surfaces for electrical wiring. The tool is completed with replaceable discs and a special dust collector.

The groove cutter allows you to simultaneously perform two cuts under the groove, while the necessary parameters are set by the working discs.

This creates two parallel furrows with a small amount of material in the middle, which can be removed with a drill equipped with a special attachment.

The advantages of a wall chaser include high performance, flatness of the cable channel, low level of dust formation due to the dust collector. A significant disadvantage of the tool is its high cost.

Features of the technology of chasing various surfaces

Having a prepared diagram and a working tool, even a novice master can do wall chasing for electrical wiring. Depending on the type wall material, the slitting technology may differ significantly.

Concrete surfaces

Slitting concrete is a long and laborious process. Such material is characterized by high strength and density, so it is inappropriate to use a metal chisel and hammer.

Suitable material for slitting concrete surfaces- a hammer drill with a special drill and a wall chaser. The hammer drill creates a high level of noise, which can cause a lot of inconvenience to neighbors, so the work should be carried out during the daytime with short technological breaks for 2 hours. In addition, working with a hammer drill is associated with the formation a large number dust when processing a hard surface.

When performing large volumes of work, a professional wall chaser is used, which allows you to slit concrete in a short time with a minimum amount of dust.

Wood surfaces

To equip the strobe in wooden walls ah, all household tools are used with the exception of the hammer drill. The best option is a hammer and a chisel (chisel replacement), which allows you to quickly and efficiently remove excess wood layers between the cuts made by the grinder.

You can also use for work:

circular saw... It allows you to make even cuts of the required dimensions;
manual frezer . For this, a special cutter is used, which allows you to make straight and side grooves.

Aerated concrete surfaces

The process of making channels for wiring is as follows: the tool is pulled along the drawn line and is pressed against the surface with force. It is allowed to use a grinder with a circulation type nozzle, when working with which much more dust and noise are generated.

Brick surfaces

When installing electrical wiring in rooms with brick walls, the chasing is not performed. The cable is fixed to the surface with dowels, after which it is closed with a thick layer of plaster.

If you plan to lay the cable in protective corrugated sleeves or metal channels, the chasing is performed with the same tool that is used for concrete walls.

To equip horizontal strobes on brickwork, you can use a chisel and a hammer, for vertical ones - a grinder with a diamond disc, a chasing cutter and a perforator with a nozzle.

If the walls are plastered, you can limit yourself hand tool, however, it will take much more time to grind.

The rules for making strobes for electrical wiring are as follows: horizontal ones are performed at the seams, vertical ones - between separate rows.

For mounting sockets and switches in the wall using a power tool, seats are made.

Is chipping of load-bearing walls allowed?

When developing a project for laying electrical wiring, the number and location of load-bearing walls are taken into account, and the possibility of performing a groove in them is also determined.

In accordance with current legislation and architectural norms, it is prohibited to carry out any kind of work in the load-bearing wall.

Slitting as one of the types construction works can lead to a decrease in the strength of the structure of the house as a result of the exposure of the reinforcing belt and the development of corrosion processes.

To carry out such work, you must obtain permission. For brick, block and wooden houses permission will be issued, for panel houses- denied.

Important! In load-bearing walls, the depth of the cable ducts should not exceed 2 cm.

A well-chosen tool, taking into account the wall material, will allow you to make strobes for electrical wiring with your own hands. Of course, in practice, beginners may encounter unforeseen difficulties or make gross mistakes. To guarantee a high result, if possible, you should entrust the work to professional teams.

If the electrical wiring in the house changes, it is not always laid through the old channels. In order not to violate the aesthetics of the interior, to ensure fire safety, to protect the wiring from possible damage, it is made hidden and hidden in the grooves - longitudinal grooves hollowed out in the wall, ceiling. The process of preparing surfaces for wiring is called stripping.

Basic rules and regulations for wall chasing for wiring

Changing walls and ceilings for wiring is a responsible type of work, and the order of its implementation is regulated by a number of normative documents in the field of construction.

The chasing of channels in the bearing wall can affect its bearing capacity, therefore such operations require mandatory coordination with the architecture management. It is possible to obtain permission to chisel load-bearing walls in brick houses; as a rule, the ban on panel houses is categorical. The problem can be solved by laying wiring in walls made of. We talked about the installation of such walls in.
It is also strictly forbidden to carry out chipping in slabs. floor slabs, horizontal wiring is laid at a distance of 15-20 cm from them.
The embroidered seam between the slabs cannot be used as a groove.
The distance from corners, door and window openings to strobes should be at least 10 cm.
The slitting should be carried out at a distance of at least 40 cm from the gas pipes.
Do-it-yourself wall slitting for wiring should be done strictly horizontally or vertically, in planes parallel or perpendicular to the floor. The only exception is mansard rooms, where slitting of an inclined surface is possible.
The maximum continuous length of the groove can be 3 m, the depth and width - 2.5 cm.
If the thickness of the structure is more than 8 cm, the wire should be laid along the shortest path, if less - parallel to the construction lines.

Wiring stripping diagram

Video instruction on how to gouge walls

What tools do you need?

Slitting for electrical wiring can be carried out using different tools, their choice is largely determined by the base material on which the slitting will be carried out. It can be plaster of different composition, brick, stone, concrete of different hardness, including cellular or with increased content rubble.

If the layer of plaster is thick enough, you can lay a groove in it under the wiring without affecting the base. In this case, it is permissible to gouge along the ceiling and load-bearing walls.
V brick wall horizontal grooves are most conveniently laid along the seam between the rows of bricks, and for vertical grooving, cutting the brick is indispensable.
Concrete is the hardest thing to do, it is the most durable material.

For slitting for wiring, the following tool can be used:

In addition to this tool for chipping walls for wiring, you will need:

indicators or testers for detecting old hidden wiring;
level;
a vacuum cleaner;
personal protective equipment - glasses, gloves, respirator.

How to prepare for work?

Wall slitting for electrical wiring should be carried out according to the markings, which are carried out using a level and a pencil in accordance with the above norms

If it is necessary to chisel the walls in a panel house, the wiring must necessarily go along the supporting wall and ceiling, it is necessary to check the thickness of the plaster layer. If it is not enough for laying the strobes, you will have to additionally plaster the surfaces. An alternative is plasterboard wall cladding, hanging or stretch ceiling- communications will hide under them.

Wall slitting for electrical wiring should be carried out according to the markings, which are performed using a level and a pencil in accordance with the above standards, taking into account the location of openings, niches and protrusions that form additional corners, communications, as well as old wiring.

Slitting for a cable must be done taking into account that it should fit inside the corrugated sleeve, the thickness and depth of the strobes are determined taking into account the dimensions of the latter.

If it is not dismantled, it must be identified before starting work by checking with the old plan, in its absence - using a tester or indicator, and disconnected from the power. The new wiring must not overlap or intersect with the old one.

With a pencil, 2 parallel lines are drawn for each groove. Not only strobe routes are marked, but also places for switches, sockets, junction boxes.

Slitting under the cable must be done taking into account the fact that it must fit inside the corrugated sleeve, the thickness and depth of the strobes is determined taking into account the dimensions of the latter. A plan is drawn up for the installation of electrical wiring and the placement of electrical products.

If the premises are residential, it is necessary, if possible, to take out furniture and office equipment, or carefully preserve them with plastic wrap.

Slitting technology: step by step instructions

The work is carried out in a certain sequence:

Parallel grooves are drawn at a distance equal to the width of the groove. The chaser allows you to make both grooves at the same time.
The grooves are selected to the desired depth using a hand chisel or a hammer drill with a chisel attachment.
The strobes are cleaned of dust and primed, after which you can start laying the wiring.

Parallel grooves are drawn at a distance equal to the width of the groove.

When using a punch, the technology is slightly different:

The material between them is selected using a punch, which must be held at an angle of 45⁰;
The edges are leveled using a nozzle - a semicircular chisel.

First, along the entire length of the route, with an interval of 10-15 mm, holes are made with a drill to the depth of the groove perpendicular to the surface.

If you don't have the power tool you need, you can rent it, it is better to make a choice in favor of a wall chaser, the cost of renting it (from 260 rubles per day, depending on the brand and model) is comparable to the cost of renting a hammer drill (from 200 rubles) or a grinder (from 240 rubles), and the advantages are obvious.
It is better to rent a wall chaser or a grinder complete with an industrial vacuum cleaner, it is better for them to catch dust than a household one. The average rental price is 400 rubles. per day.
It is better to grind the walls with a grinder together, the assistant must either moisten the surface with a spray gun to reduce dust formation, or keep the vacuum cleaner nozzle at a safe distance from the tool in order to gouge the walls without dust.

The cost of specialist services

Slitting walls for wiring is the simplest type of slitting (in comparison with slitting for pipes), these works can be done independently. The cost of their implementation by specialists depends on the material of the walls and the tool used.

Most firms provide this service at the following prices:

in plaster, plaster wall - 100 rubles / m.;
in brick - 200 rubles / m.;
in concrete - 300 rubles / m.;
on the ceiling - double coefficient;
the cost of slitting a non-standard shape is calculated individually.

By entrusting the slitting to specialists, you can count on the fact that they will offer an optimal plan for laying electrical communications.

Chipping scheme in a panel house

Slitting surfaces for wiring is a work that you can do yourself, but you must strictly observe the norms and make sure that there are no prohibitions on slitting. Labor costs depend on the tool used and the material of the surface on which the chasing is performed. To avoid the formation of dust in the process of work will allow the use of a special tool - a wall chaser together with a vacuum cleaner, it can be rented.

Many of you spent your childhood with your grandmother in the village. In almost every collective farm house, electrical wiring was laid in an overhead method: using insulators, at some distance from the wall. The wire was used of high quality, with cloth insulation: it's not scary to touch.

This method is still used today: in wooden houses and baths, and just like that, "in retro style."

However, from the point of view of rationality, the laying method is not the most reliable. First, there is the possibility of damage to the wiring with any sharp object. And if there are small children or pets with strong teeth in the house, wires become a source of danger. Secondly, the aesthetics are controversial to say the least.

In wooden houses, the problem is solved quite simply: there are special installation boxes for wiring. Different colors, sizes, with fire protection... But what about houses with concrete (brick, plaster and other) walls?

Laying the cable in the grooves

Regardless of the way the walls are finished (drywall, plaster, curly wallpaper ...), the cable, which contains life-threatening voltage, should be hidden in the main wall. When building typical panel houses, electricians did not have a headache at all about the wiring. In the walls, recesses were arranged in advance: lay the cable, grab it with alabaster, and you can plaster.

But what about the construction of a new house? It is possible to design in advance the routes of cable laying, and even to be built into brickwork cable channels. This is a progressive way to ensure the strength and safety of electrical wiring.

But in reality, the cable is laid after the end of construction, before finishing the walls (and often after it). The situation is the same if you bought new furniture and the cabinet has traditionally covered the outlet.

Another reason to shift the wires: repairing the apartment. In older houses, the power cables in the walls have an aluminum conductor. Not that this is completely bad, but given the old age of the wires and the new requirements of the PUE (electrical installation rules), it is better to lay other wires with strong insulation and a copper conductor. And the standard arrangement of switch-sockets, to put it mildly, is far from perfect.

The purchase of powerful electrical appliances, such as a boiler, air conditioner, electric stove, requires a power line to be connected.

So, chipping walls for wiring with your own hands - how realistic is it?

Important! Laying the cable to the depth of the plaster is unacceptable. Fire safety requirements are violated (in case of fire of the wiring, paper wallpaper), and the likelihood of external damage increases. Just inside the wall.

Correct laying of wiring in the grooves

Safety notes:

If desired, you can lay the cable in a corrugation. This will make it possible to replace the wiring without opening the wall.

Wall chipping methods

The most primitive method is with a manual bolt. The process is not fast and difficult, especially for concrete walls. However, if the distance is short and there is no power tool at hand, it is quite feasible. The advantage is a small amount of dust.
A more advanced method is with a drill or punch (work with a thick drill). Blind holes are drilled along the marked line to a given depth, then the strobe is trimmed with a bolt (chisel). As a development of the method - chipping with a crown on concrete for the installation of sockets (switches). The work is done faster, but a lot of unnecessary material is selected.
With this method, it makes sense to lay the wire in a corrugation.
Shtrobing walls for wiring with a perforator, in jackhammer mode. Enough quick way, in comparison with sequential drilling and chisel. However, there are serious drawbacks: the strobe turns out to be uneven, with ragged edges (you will have to spend more putty). During operation, a lot of dust and stone fragments are generated.
Professional builders punch grooves for electrical wiring using a special tool: a wall chaser. If you are starting construction or renovation, you can buy such a device. The costs are quickly offset by the ease of use. The strobe is cut with a circular saw on concrete (two discs can be installed, per the width of the groove). The sole is equipped with guide wheels, which allows you not to waste effort on moving the appliance on a rough wall. The immersion depth can be adjusted. But the main advantage is the presence of a dust extraction chamber. Using a hose, the wall chaser is connected to construction vacuum cleaner, and you can work without even taking the furniture out of the room. There is no complete mechanization, after passing along the wall, you need to manually knock out the core. This is done with the same bolt or with a perforator.
The wall chaser makes it easy to work in the ceiling. For the operator, the position of the surface does not matter - it is equally comfortable to slit the vertical and horizontal.
But the most popular way is to use an angle grinder (in common parlance - a grinder). It is enough to set the disc on a stone, and the efficiency of work will be no worse than that of a special tool. Performance can be increased by installing a special twin disk.
After making the guide cuts, the middle is knocked out in a known manner.
The most serious drawback is a huge amount of dust, which settles for at least an hour. Therefore, it is necessary to work in a respirator. If you build new house, or you do overhaul(with the complete release of the premises from household items), the problem can be ignored. When renovating a room in which you continue to live, you need to look for a way to ditch the walls for wiring without dust. Conventional vacuum cleaner, which your assistant will hold, is not very effective. Dust flies in all directions, even if you wet the wall first.

Homemade grinder dust collector

Of course, there are ready-made tools on sale that turn your grinder into an effective wall chaser. But the cost of such nozzles is close to the price of the angle grinder itself.

Again, the decision is made based on the amount of work to be done.

However, there is no reason to be upset. A homemade dust collector can literally be made from construction waste.

Several scraps of laminate, a piece sewer pipe made of plastic, and a household vacuum cleaner (preferably a cyclone type).

You can even adapt the wheels, the scope for creativity is not limited. In addition to the main purpose, the attachment (even if it is homemade) increases the safety of work. Modern cutting discs no longer fly apart as they used to. And they do not break often. But stones flying out from under the grinder can injure the operator.

In the presence of a dust collector, chasing will be comfortable and safe.

Cable laying and installation of junction boxes (sockets, switches)

We figured out how to properly line the walls for wiring: of course, it all starts with the correct markings.

Tip: when marking the places where the boxes will be installed, try to move the lines as far as possible. After chasing, all your hole center markings will disappear.

Now let's look at how to properly lay the cable.

After the formation of the groove, it is cleaned out with a vacuum cleaner. Then, with a gloved hand, or by applying a thin strip, the uniformity of depth and the absence of protruding parts in the groove cavity are checked. This is important: if the wire protrudes above the wall, security will be violated in this place.

It makes no sense to install boxes in advance, if you have to finishing walls (the thickness will change). Therefore, at first, the wires are laid, but before entering the niches for the boxes, 10-15 cm of the cable free play remains, without putty. Leave 15–20 cm of wire for installation. You cannot save, if something goes wrong, you will have to carry out the installation again.

The wire itself can be fixed traditionally, using asbestos (plaster), or fixed with special clips inside the groove.

Then putty is made to the level of the wall. At the same time, the free movement of the cable in front of the installation site of the boxes is maintained.

Advice: before laying the cable, mark the ends (where you came from, where to connect), especially if several wires are put into the box. When laying several cables in one strobe, they are laid in parallel, and not on top of each other. It is not allowed to twist one wire around another.

Before the final sealing of the strobe, draw a layout diagram, with accurate measurements in relation to the corners.

This will avoid problems when drilling walls later.

Important! All work related to the supply of voltage to the cables is carried out only after the putty (plaster) has completely dried. Before applying the finishing coat, also wait until the putty in the strobes is completely dry.

Features of slitting a concrete wall

If you are thinking about the question of how to gouge the walls for wiring, then at the first stage you need to use a pencil and paper. Your task is to schematically indicate the line of passage of the wire. It is important to determine the exact locations of the outlets and switches. To do this, you need to familiarize yourself with the set of rules that govern the distribution of electrical equipment.

Many people believe that they know the method of chasing, but in practice they face problems. If you are faced with the question of how to properly groove walls for wiring, then you should know that horizontal grooving should not be located further than 150 mm from the overlapping slabs. Vertical grooves should be avoided in the case where they can run near gas pipes. It is necessary to deviate from the latter at least 400 mm.

Windows and corners should be removed 150 mm or more. It is only necessary to lay pipes vertically or horizontally. There should be no unnecessary slopes. As an exception, only attic structures are used, here the wiring should be located parallel to the wall - at an angle.

When home craftsmen are wondering how to properly groove walls for wiring, they learn that the length of a solid furrow should not exceed 3 m, while its width and depth are 25 mm. It is also important to exclude the presence of turns. The transition to the outlet and the switch should be done at the same angle. The exceptions are joints that have a horizontal surface. It is forbidden to make horizontal grooves in load-bearing walls. This recommendation applies to buildings in all regions. When it comes to panel houses, this rule should be followed.

Tool selection

Before starting work, you must definitely ask yourself the question of how to gouge the walls for wiring. Today, a huge number of methods for carrying out these manipulations are known. You can use:

puncher;
wall chaser;
chisel and hammer;
grinder;
impact drill.

A wall chaser is almost an ideal tool, as it allows you to get even cuts... However, its cost is high. But if you plan to use a perforator, then the manipulations can be carried out very quickly, and the work will have a low cost. With an angle grinder, these grooves are flat, but debris will form that is difficult to get rid of. The main advantage of the chisel and hammer is the low cost. However, if you want to achieve high quality, then you should not save on tools.

Using a punch

You may be faced with the question of how to groove the walls under the wiring with a puncher. This method is one of the most common. This is due to the fact that the procedure does not require a lot of money and time. The first step is to prepare the walls. These jobs are no different from those when using other tools.

The master will have to check the presence of old electrical wiring. When wires are in the walls, unpleasant moments happen. You should not risk your health and life. A special device must be used for testing. In the next step, the master will have to mark the walls. However, it is necessary to start marking only after you have made sure that there are no live wires in the walls.

From the central box, it is necessary to draw lines to power sources, among them:

sockets;
switches;
lighting wires.

Care must be taken to provide protection against dust and dirt. Doors and windows are usually hung because using a hammer drill will generate dust that will spread throughout the room. If you are faced with the question of how to properly grind the wall for wiring with a puncher, then you should familiarize yourself with the information below. After completing the preparation, you can proceed to the main steps.

To do this, using a tool along the drawn lines, it is necessary to drill holes, which must be 1.5 cm apart from each other. Then everything depends on the tool. It can be switched to slitting mode by using a special attachment. You can also insert a simple drill. The holes made in advance are connected with each other using a puncher. Beginners should not neglect the preparation, because without experience it is quite difficult to carry out such work, and it will be completely unrealistic to achieve an ideal result.

Using the grinder

If you still have not decided how to gouge the walls for wiring, then you can consider a technology that involves the use of a grinder. To do this, you should use because the material of the walls is strong enough. Two strips should be cut in the marked area. The slots must be parallel. The step between them will be 2 cm.

Next, a punch or other tool is used to remove unnecessary residue between the cuts. You can use a hammer drill. After the wiring is placed in the opening and covered with plaster. Excavation of material should be carried out to such a depth that the final stage it was convenient to lay the plaster. When the wires are completely hidden and located deep, there will be a free space that can easily be filled with the composition.

If you are faced with the question of how to shtrob concrete wall under wiring, then you should also think about how to avoid the formation of excessive amounts of dust. Its layer after the completion of work can be so impressive that only an industrial vacuum cleaner will be able to clean the room.

If you are interested in cleanliness after completing the manipulations, then you should prefer the wall chaser. It resembles a grinder, but has built-in diamond wheels. The presence of the casing allows you to adjust the pitch between the discs and control the depth of the furrows. The advantage of the wall chaser is the presence of a discharge pipe for the vacuum cleaner. Dust during operation does not come out of the casing. However, this method is not suitable for one-time work, because the tool can be purchased at a high price. But if you still want to get clean room, then you can rent the unit.

Using a hammer and chisel

Asking the question of how to gouge walls for wiring, you can consider one of simple options- using a hammer and chisel. The length of the section to be punched out must be divided into separate segments. With the help of a chisel, the master will have to outline the grooves, the marks should be located along the edges of the future groove. The indentations should be equal to the width of the tool tip. After, having installed it across the direction of the future cable, part of the wall must be knocked out.

You should continue to remove the top layer further. You need to move along the marked line, and at the end you can deepen the strobe by 25 mm along its entire length. After each removal of the top layer, you can deepen the strobe immediately. However, these tools cannot be used if the wall is concrete, since the material in its base is strong enough, so it will be difficult to work.

Final work

So, we chase the walls for dust-free wiring using a special tool - a chasing cutter, which you may have in stock. Sometimes the tool can be found from relatives or friends, or you can rent it from a store. Once the grooves have been pierced, they should be cleaned with a broom or vacuum cleaner. It is important to remove dust from the grooves and prime them.

The process of wiring and securing wiring has whole line nuances. After the completion of the work is carried out. This can be done, as mentioned above, with the help of plaster. Putties and plaster are used as alternatives.

Why you shouldn't choose a rotary hammer

Before starting work, you can ask a question about how deep to groove the wall for wiring. Using a hammer drill, it is necessary to deepen by 25 mm. With the help of a spatula, in the next step, you can deal with the device of the groove. The main condition for this is not to set the blade across the line. In this case, you will chip off the extra piece of plaster or wall. As a result, the strobe will not acquire the desired width and depth parameters, in addition, the appearance will not be very attractive. Slitting with a puncher allows you to achieve a result, but the process itself is not very clean and fast.

Why you shouldn't use an angle grinder

If you, too, were among those who wondered about the best way to grind the walls for wiring, then you probably considered the options for using an angle grinder. Additionally, a diamond disc should be purchased for it. With its help, you can grind not only brick and concrete, but also plaster. In the latter case, the work will be easy.

The whole process will be almost identical to the previous one, the only exception is the result, it provides for the formation of a smoother groove. This is important to consider when minimizing damage to wall finishes or plaster. However, experts do not recommend using an angle grinder, since working with it is accompanied by the formation of a large amount of dust, which fills the room completely upon completion. But to solve the problem, you can use a vacuum cleaner, it is better if it is an industrial one. When chipping, in this case, you should enlist the help of another person who will hold the suction pipe near the cut-off point.

For reference

Now you know how to chase walls for wiring without dust - for this you should use a chasing cutter. It acts as an ideal modification of the grinder option. The device provides the ability to install a pair of cutting. Between them, you can adjust the distance. The main advantage is that the circles are covered with a casing that covers the point of contact with the wall.

Conclusion

In most cases, the chaser has a casing that is equipped with a branch for the suction pipe of the vacuum cleaner. The result of the work is smooth grooves, which can be formed without dust. After cutting along the edges of the groove with a puncher, you will need to select excess material.

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