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Chasing the wall under the sewer duct. How to ditch walls to mask the plumbing system

The question of how to hide sewer pipes in a house is of concern to many suburban developers today. The presentability of the appearance of the premises where sewage is carried out requires them to have a special approach to the construction of the sewer system. And in this regard, hidden wiring of pipes comes first.

There are two options:

  • Lay the pipes in the prepared grooves.
  • Make a special box where the pipes will be laid.

Laying pipes in grooves

Gates are channels that are cut into the wall or floor. This requires a grinder and a special diamond wheel that easily cuts even the most durable construction material. For example, concrete.

Most often, sewer pipes are laid along the wall. Therefore, grooves are cut on its surface just above the floor for the diameter of the sewer (in different rooms it varies from 32 to 80 mm). Please note that the sewer system is gravity, so it is necessary to strictly maintain the angle of inclination of the pipes towards the riser. Usually this indicator varies from 2 to 3 mm per one running meter pipeline length.

Fastening of pipes in strobes is carried out, as usual on a plane, using plastic clamps. The latter are attached to the inner wall of the strobe with a plastic dowel and a self-tapping screw.

After the installation is completed, the strobes are sealed with a plaster mortar. That is, it turns out that it is necessary to close the pipes of the sewer system in the walls before the start of the finishing works Houses.

Box for sewer pipes

This process, on the contrary, is carried out when the decoration of the premises is almost completed. Anyway, already done.

What materials can be used to build a sewer box?

  • Drywall;
  • Plywood;
  • OSB, chipboard or fiberboard;
  • plastic panels;
  • Laminate.

But the basis of the whole structure is a frame under the box. It can be made either from wooden battens or from a metal profile. Preference has recently been given to the second option, as the most reliable with a long service life.

Plumbing advice: If, nevertheless, it was decided to use wooden bars for the frame, then it is recommended that they be treated with an antiseptic composition after installation.

Frame assembly

Open laying of sewerage is carried out along the wall on clamps. To make a box, it is necessary to install two metal profiles along the laid pipeline:

  • One on the wall;
  • Second in gender.

It is important that both profiles are laid strictly horizontally. This takes into account the diameter of the pipe used. That is, this size will be fundamental when choosing the installation location and fastening profiles. Therefore, the upper edge of the profile along the wall should be 3-5 cm higher than the edge of the laid pipe. On the floor in exactly the same way, only in a horizontal plane from the wall. For the convenience of work, it is necessary to apply lines on the wall and on the floor, on which the profiles will be attached. Fastening is carried out on self-tapping screws every 0.5 m.

The most difficult stage is the installation of an intermediate profile that will form the outer corner of the box.

How to do it right:

  • From the profile itself, it is necessary to cut several segments with a length corresponding to the size of the installation from the floor to the profile installed on the wall. That is, these segments will be the height of the box.
  • They are attached to the floor profile with self-tapping screws every 40-50 cm. The racks must be aligned vertically.
  • Now you can attach a horizontal profile to them, which will form an angle.
  • To stiffen the entire structure, it is necessary to install several crossbars in a horizontal plane. That is, the corner element is connected to the profile, which is fixed to the wall.

Frame cladding

The frame is ready, now it needs to be sheathed. For example, we choose drywall as a sheathing. It must be cut into pieces in sizes that match the dimensions of the sides of the box. Dimensions must be accurate, neither less nor more is not recommended.

Plumbing advice: If the box is installed in wet room, then it is best to use moisture-resistant drywall, and wood boards will have to be treated with an antiseptic.

Drywall is fastened with self-tapping screws so that their head enters the body of the sheet to a depth of approximately 0.5 mm. This is done so that when finishing the box it would be possible to hide the attachment points with putty.

Place of installation of self-tapping screws:

  • From the edge of the sheet - 1.0-1.5 cm;
  • Between fasteners - 10-15 cm.

If the length of one cladding sheet is not enough to the end of the structure, then it is necessary to join two adjacent elements only on the intermediate profile (stand or cross member).

Regardless of which method you used, if you pass in an unheated room.

Chasing walls is called their cutting through for one purpose or another by means of special tools and equipment. The process of chasing walls for pipes is an indispensable part of the complex of works on laying hidden communications, allowing you to disguise any of their nodes and components.

The need for wall chasing

The question of the need for wall chasing for certain communications is always decided by the owners of the dwelling themselves, based on aesthetic or other considerations, however, experts recommend hiding any types of pipes in the wall, with the exception of those that can also perform decorative functions (brass, copper, etc.). d.).

"Hidden" pipes do not disturb the comfort and space in the apartment and remain well protected from mechanical or other damage, and at the same time, the risk of injury to people is reduced (for example, thermal burns when in contact with hot pipes, accidental impacts on protruding corners and surfaces of structures etc.).


An alternative to gating can be the manufacture of a drywall box for pipes or other communications. However, the disadvantage of this method is a slight decrease in the area of ​​\u200b\u200bthe premises, sometimes quite noticeable against the background of the overall small size of the dwelling. Therefore, in most cases, gating is the most acceptable option for hidden laying of communications in an apartment.

It should be noted that most often there is a need to mask plumbing or sewer pipes. Chasing under pipes in a bathroom or toilet is often relevant due to their rather large length and not very aesthetic appearance. At the same time, hiding heating pipes, for example, does not make sense, since their heated surface serves to heat the entire room.

Basic rules for arranging hidden communications

Shtroblenie is a responsible process, which, if not taken care of, can be fraught with unpleasant consequences. Therefore, before you gouge the walls under the pipes, you should carefully read the basic principles and requirements in this matter.

Standard building codes and regulations establish the following provisions governing the process of chasing walls for arranging hidden communications:

  1. Chasing of supporting and load-bearing walls and structures is not allowed, as this may affect the stability of the building as a whole. Before ditching walls for pipes, you should familiarize yourself with project documentation buildings or structures.
  2. Only monolithic structures that cannot be disassembled are blindly embedded in the cut wall. In the case of detachable communications, access to all mechanisms and components is required, which is achieved by installing opening hatches and panels.
  3. When mounting metal structures in-wall, it is necessary to take into account the layout of electrical networks. For additional security, you can examine the walls with special equipment to avoid surprises. If there may be hidden cables or electrical wiring in a particular area, this area should be de-energized for the duration of the work.
  4. For pipelines that are supposed to transport hot liquids, intermediate nodes should be provided at least every three meters. In such nodes, the linear expansion of pipes is compensated when heated. They should be located in special "pockets" that are made in the strobe to accommodate them.
  5. Pipes in a grooved wall are fixed with clamps. They should not come into contact with the walls of the ditch even at maximum bending, otherwise this will lead to the appearance of unnecessary noise during the operation of the pipeline.
  6. When sealing the strobe, a dense filling of the channel cut in the wall is not done. On the contrary, the cavity is filled in such a way that a significant layer of air forms in it.
  7. A layout or diagram of a plumbing structure indicating all nodes and interchanges should be saved in case of need for repair work, otherwise it will be impossible to visually find them when problems arise.

Ways of chasing walls

Arrangement of a strobe for pipes in a bathroom or in another room can be done using various tools, which include:

  • hammer and chisel;
  • Bulgarian;
  • perforator or impact drill;
  • a special tool - a wall chaser.

The technique of work, depending on one method or another, can have quite significant differences. For example, chasing with a hammer and a chisel is carried out manually, and therefore this method is the most labor-intensive.


At the same time, its advantage is the accuracy in the performance of work. Chasing with a grinder has a different kind of complexity: due to the need to control the pressure on the tool, it is difficult to achieve the same depth of cutting through the walls throughout the entire work area. An impact drill or hammer drill allows you to ditch even dense concrete walls. At the same time, points are first punched in the wall at a distance of 1-2 centimeters from each other, which are then deepened with a perforator nozzle like a spatula.

A special and professional tool for wall chasing is a wall chaser. Only through it it is possible to ensure complete uniformity and the same depth of the entire channel in the wall, while applying a minimum of effort for work. The use of a shredder allows you to achieve best quality wall cutting. In addition, this tool is equipped with a special vacuum cleaner, which is a considerable plus, given the dusty nature of the work being done.

Stages of concealed installation of pipelines

Shtrobleniye represents only a part of works on laying of pipes in thickness of walls; in general, the process of concealed installation of pipelines consists of a number of successive stages:

  1. Planning and development of the design scheme.
  2. Chasing walls for pipes.
  3. Leveling and cleaning a ditch cut into the wall.
  4. Installation and laying of pipeline structures.
  5. Strengthening the pipe in the strobe with clamps.
  6. Connecting the entry and exit points of the system.
  7. Control launch of communication with a tightness audit.
  8. Canal termination and exterior finish walls.


Usually at home there is no need to frequently work with this tool, and therefore it would be more appropriate not to buy it at a fairly expensive price, but to rent it for temporary use.

Technological features of chasing walls for water pipes are associated with the use of a unified methodology that allows you to perform work with minimal labor. Mostly furrows are made in load-bearing structures and, in case of violation of the requirements, significantly weaken the building, therefore, for non-professionals, you need to know the intricacies of do-it-yourself apartment renovation.

  • the depth of the hole corresponds to 1/3 of the wall thickness;
  • if work is carried out in houses with monolithic partitions, then the furrow does not deepen below the reinforcing connecting elements;
  • it is required to carefully seal the strobes using a cement-sand mortar, preventing the formation of voids that reduce the degree of strength of the structure.

Applied equipment

The work is carried out using a specialized tool that allows you to do the work most efficiently and quickly with minimal labor costs. The following equipment is mainly used:

  • perforator;
  • Sander;
  • wall chaser;
  • hammer with chisel.

Wall chipping technology

The first step is to mark up with a simple pencil. The places for making furrows are outlined and parallel directed ditches are cut. Subsequently, an intermediate hole is formed between them, selected with a chisel.


mark the walls for chasing

Attention! It is more convenient to apply transverse cuts, which greatly simplify the subsequent excavation of excess material, by breaking off small cubes.

The technology for chasing walls for heating pipes differs depending on the tool used.

Compliance with safety regulations in the course of work

When performing manipulations, it is advisable to take into account the following recommendations to increase the safety of the work:

  • load-bearing walls are considered a risk zone in panel houses;
  • it is strictly forbidden to deform the reinforcing cage of reinforced concrete structural elements;
  • recommended to be done in concrete wall shallow gating in the vertical plane;
  • it is advisable to refrain from cutting through the wall with deformation of the reinforcement, due to the high probability of collapse of the structure;
  • needs to be checked first internal walls for the presence of electrical wires.

ditch the walls as close to the floor as possible

In order to avoid damage to communications, the operation is carried out in a parallel plane, directly under the ceiling or next to the floor, since there is a low probability of hidden wiring. When perpendicular recesses are made, they are guided by the location of the sockets, creating holes opposite the power points of electrical appliances.

The procedure for chasing with a hammer and chisel

The formation of technological holes for pipes using a hammer and chisel is possible in plaster and block walls. The operation begins with making recesses with the tip of the tool from the edges of the furrow. Having installed the chisel across the hole, it is driven into the structure with a hammer to a depth of 10 mm. Subsequently, a recess is made to an identical distance, due to which a strobe of the required size is formed.


we grind the walls with a hammer and a chisel

Attention! The technology is completely incompatible with concrete and brick coatings.

Perforator application

It is recommended to work with hard coatings using a perforator equipped with a special nozzle in the form of a drill or a spatula. The technology consists in making small holes along the entire length of the recess, at a distance of up to 15 cm.

Important! When using the “shovel” nozzle, it is necessary to avoid installing it across the strip, because of the danger of breaking off a large wall segment.

Using a grinder

The grinder will be an excellent alternative to a puncher if you equip it with a diamond-coated disc that allows you to easily cut brick and concrete structures. Activities are carried out in several stages:

  • marking execution - 2 parallel lines are created that form the width of the future furrow;
  • cuts are made with a grinder;
  • the inner core is knocked out with a hammer and chisel.

The advantage of the technology is the formation of exceptionally smooth edges, which cannot be achieved when using a perforator.

Rules and procedure for using a wall chaser

The optimal solution is the use of a wall chaser, which allows you to perform work quickly and without violating the environmental situation in the room. The tool is equipped with an industrial vacuum cleaner, which is included in its design and prevents the formation of dust. The equipment simultaneously performs a pair of perfectly even cuts, the core of which is selected by improvised means.

Care must be taken in selecting equipment as there are units with different design features and operating principle. If the cutting elements are mounted in parallel, then the work is greatly simplified, but in the case of inclined discs, you need to have a special skill.


use a wall chaser

When the technique is equipped with parallel discs, a pair of grooves is made, between which unselected material remains, which is subsequently removed by a perforator. Using a device with inclined disks, it is possible to immediately create a cavity that has a triangular shape.

Parallel devices make wide furrows, characterized by great depth and enclosing pipes having a diameter of 50 mm. The inclined type unit forms narrow recesses, more adapted for electrical wiring.

Main rules for the implementation of events

When chasing walls for pipes, consider the following aspects:

  • full compatibility of the tools used and materials of structural elements - it makes no sense to make holes with a chisel in a concrete partition, here it is optimal to use a perforator;
  • compliance with safety regulations - damage to the reinforced concrete reinforcement cage will lead to a decrease in strength and increase the likelihood of collapse in the event of an earthquake;
  • fulfillment of technological requirements and methodological recommendations - it is necessary to do the work in the prescribed sequence, regularly removing debris and washing the formed holes with water. It is advisable to use an industrial vacuum cleaner that allows you to form perfectly smooth edges;
  • health care - use a respirator or gauze bandage to avoid inhalation building dust deposited in the lungs and harmful to the respiratory system;
  • accurately determine the position of electrical wiring - focus on the location of switches and sockets, trying to make technological holes along the floor or ceiling.

Carefully prepare for the operation by first measuring the diameter of the pipes in order to know what size to form the strobes. Decide on the equipment used and strictly adhere to the methodology, competently and timely removing the core. Practice on insignificant objects in order to improve your skills and complete the task with high quality.

Shtroblenie brick walls under the pipes is used to give the room a more aesthetic appearance. This will hide communications on the walls.

To perform all the work qualitatively, you need to get acquainted with the technology, acquire the necessary tools. The article proposes to learn how to groove a wall under pipes in several ways.

Features of chasing walls for pipes

Instructions for use and strobe device recommends:

  • Hide in the grooves any communications that do not require periodic maintenance.
  • Objects hidden in strobes should not exceed 1/3 of the wall thickness in thickness.
  • If the buildings are monolithic, recesses in the walls for laying communications can be made to a depth that does not exceed the depth of reinforcement in the frame.

Tip: According building codes and the rules forbid strobes in load-bearing walls, floor slabs in panel structures. This can reduce the strength of supporting structures and lead to undesirable consequences.

After deciding how to ditch the wall under the pipe, making grooves in the bearing walls, laying the pipeline, they should be repaired very carefully and carefully. sand-cement mortar without the formation of voids that will reduce the strength of the wall.

When chasing furrows in load-bearing walls, as a rule, the following are used:

  • Bulgarian.
  • Perforator.

Wherein:

  • A plan of furrows for communications is marked with a pencil.
  • A grinder or a wall chaser cuts two straight parallel grooves.
  • The gap between the grooves is knocked out with a chisel or perforator.
  • It is easier to apply transverse cuts, which will facilitate the removal of excess from the strobe.

When performing work, it is necessary to observe the main rules presented in the table:

An example of the placement of water and sewer pipes is shown in the photo.

Choosing the right tool

Perforator with a nozzle for punching strobes

The perforator performs strobes on solid materials:

  • Concrete.
  • Brick.
  • Reinforced concrete.

The disadvantages of the method include:

  • Torn edges strobe, with many chips.
  • Sometimes additional processing is required.
  • High noise level during work.

The tool can be used in tandem with a wall chaser or grinder. The nozzles that must be used for chasing can be a spatula, a drill.

Work order:

  • Marking of future grooves is applied on the wall.
  • Holes of the required depth are drilled along the entire length of the strobe in increments of 10 centimeters.

Tip: When constructing a strobe, the spatula cannot be placed across the line, this will lead to breaking off part of the wall.

  • The parts between the holes are hollowed out with a chisel or hammer.

With the help of a puncher, work is done much faster. The video in this article shows in detail how to properly perform chasing under pipes in a concrete wall with a perforator, which nozzles are used and how.

Angle grinder with diamond wheel

An angle grinder is well suited for making strobes.

Process Benefits:

  • Smooth edges of furrows.
  • Straight lines.
  • High speed.
  • Simplicity.

Additionally, you may need:

  • Chisel with a hammer.
  • Perforator with nozzles.

Wall cutting is carried out with a diamond-coated blade, which makes it easier to cut through concrete and brick. The usual circle on the stone process will not be as effective. Work begins with marking, drawing two lines that set the width of the furrow.

  • Cuts are made along the marked lines.
  • With a chisel or hammer, the inside of the furrow is knocked out.

The main difference of this method is the evenness of the edges of the strobe.

Tip: To reduce the amount of dust, you should use plain water when working.

Stroborez for making shtrob

The best way to make a strobe is to use a strobe cutter. They can make strobes for styling:

  • Water supply systems.
  • Heating systems.

The kit for the device includes:

  • Interchangeable disks.
  • Dust collector.

The main disadvantage of the device is the high price.

The appearance of the wall chaser resembles a grinder a bit, but with connectors for installing two diamond discs.

Wherein:

  • The distance between the discs can usually be adjusted.
  • Additionally, the depth of the furrow can be adjusted.
  • The dust collector removes dust as much as possible to the side or connects directly to the vacuum cleaner, which significantly reduces the amount of dust emitted.

After cutting, the excess is hollowed out with a chisel or perforator. Chasing walls in a brick or concrete wall under pipes is not a very laborious process, but for those who have not encountered construction work, it is desirable to practice, to gain experience.

The aesthetic beauty of the premises is an important factor for the owners. Pipes laid over the wall can spoil appearance premises. Therefore, many are interested in whether it is possible polypropylene pipes immure into the wall, what is the danger of such a gasket, and how to avoid possible problems with pipeline maintenance for hidden installation.

For the installation of the pipeline requires high-quality and reliable material. It can be, for example, stainless or galvanized steel. Over time, polypropylene displaced these types from the construction industry. The main reason was the combination useful properties at a moderate price.

Polypropylene is suitable for hot and cold water supply, heating. The material is durable and does not require maintenance, so you can fearlessly immure water pipes into the wall.

The main thing is that their use does not exceed the temperature limit of 95 ° C, when the material loses pressure resistance and deforms. IN water pipes And heating systems housing stock, such pipelines operate at lower temperatures of the working environment, so no problems should arise.

The disadvantage of the material is thermal expansion, which can directly affect the integrity of the wall into which the pipes are immured. The expansion coefficient of polypropylene is quite high. The linear increase can be up to 10 mm per meter of pipe at a temperature of 70 °C, respectively, the pipe diameter also increases slightly.

The higher the temperature, the more the coefficient of expansion of the pipe increases. Therefore, the laying of heating networks deserves special attention, their correct installation, the choice of types of pipes corresponding to the conditions.

Note! Reinforced grades of polypropylene have a lower coefficient of linear expansion. Approximately 3 mm - 3.5 mm per meter. Therefore, when laying hot water supply or heating, reinforced pipes will be more reliable, since they will create less pressure on the wall, and the probability of deformation of such pipes is much lower.

Installation requirements

When laying a pipe in a wall, it is recommended to use shock-absorbing materials. For example, energy flex, polyurethane foam. These materials will serve as a gap between the wall and the pipe, respectively, there will be no pressure on the concrete when the pipe expands.