What methods and tools are used to cut openings in concrete?

How to break through an opening

In order to cope with any work efficiently and quickly, you need to be well prepared.

Preparatory work

Punching an opening is quite a dusty job, so you should take care of special equipment in advance. clothes:

To collect garbage you will need strong bags. During punching, the surface can be moistened with water - this will reduce the amount of dust. If floor repairs are not planned in the room where the wall will be broken through, it is better to immediately cover it with boards to avoid damage.

1. roulette;
2. Bulgarian;
3. diamond discs;
4. perforator;
5. various attachments for the hammer drill;
6. chisel;
7. sledgehammer.

Attention: you must work with a sledgehammer carefully. Because the goal of the work is a neat opening, and not a dilapidated wall.

Video: How to make an opening in a load-bearing wall. The entire step-by-step process of creating an opening.

How to make an opening in a load-bearing wall: technology depends on the material

I won’t say much here, since the walls are different. The easiest part of the dismantling process is a brick wall - remove one row, and all other rows will go without problems. The most difficult thing to dismantle is concrete with all its reinforcement - here you will have to work hard. It will be necessary to alternately use both the grinder and the hammer drill.

In general, the technology for dismantling part of a concrete wall completely depends on its thickness, but in general, cutting the concrete into cubes is considered the most optimal approach to this matter. We immerse the grinder disk into the wall to its full depth and first make vertical slits in increments of 50-80mm, and then horizontal ones. The resulting cubes are easily knocked out with a punch. The next layer of the wall is removed in the same way. With a standard thickness of load-bearing concrete wall, such notches are made on both sides - the internal residue is removed in one cut. This applies to internal load-bearing walls in panel houses, but if we talk about external load-bearing walls, then you will have to make cuts more than once on each side. In general, this process is tedious, dusty and not very pleasant - in my opinion, it is better to delegate it to professional dismantlers.

Strengthening openings in load-bearing walls photo

Breaking through a brick wall

First, the brick wall is cleaned of wallpaper and plaster. Then, using a tape measure and a pencil, markings are made. After this, a reinforcing jumper is installed on top. This is necessary to ensure that the wall does not burst or collapse. The jumper is made from a corner measuring at least 35 mm. Two blanks are cut 30 - 40 cm longer than the opening.

Using a grinder with a diamond blade, the top is cut on both sides of the wall. They cut 15 - 20 cm more than the width of the future doorway, cutting depth = the size of the corner (shelf). After this, the corners are inserted into the cut made, securing them with anchor pins and filling the cracks with cement mortar.

Now you can begin dismantling the brick wall. You can quickly and efficiently remove an unwanted area using a diamond saw. However, not everyone can afford such pleasure. Therefore, a grinder, a hammer drill or a sledgehammer with a chisel is most often used.

Using a grinder, a cut is made along the marked lines of the doorway as far as the diameter of the diamond blade allows. Then, using a hammer drill or a sledgehammer with a chisel, the brick is gradually removed. After removing all unnecessary bricks, you need to finish the lintel. To do this, both corners need to be welded together from the bottom.

If for some reason welding is not possible, they can be fastened with metal plates. The plates and corner are drilled and secured together with powerful metal screws. Everything is almost ready, all that remains is to refine it and you can install the door.

How to make a doorway in a concrete wall

Most often, concrete walls are load-bearing. And if this is the case, then it is better to entrust this work to specialists who can correctly calculate the design features of the reinforcing frame and strapping. First, just like in the first case, markings are made.

After which this marking must be transferred to the other side. This can be done by drilling holes in the corners and along the lines of the future opening with a hammer drill. Then, using a drill with a diameter of 10 - 12 mm, we make holes around the entire perimeter, every 3 - 4 cm.

Concrete walls are much stronger than brick walls, so without a diamond saw the work will be long and hard. After the passage has been made, it is necessary to make a strapping from a metal channel or corners welded together.

In conclusion, I would like to remind you once again that any changes to the design features of an apartment, especially for apartment buildings, can be made only with permission obtained from government authorities.

Watch the video: How to cut concrete without dust yourself (redevelopment)

Prices for services for punching openings in concrete walls

Prices for partial dismantling of walls are formed taking into account their thickness, the size of the opening, as well as the method of performing the operation. It is cheaper to cut an opening in a concrete wall of a non-load-bearing structure using a modern hand cutter.

An employee of our company comes to the client free of charge to inspect the walls, review the design documentation for the apartment layout and discuss further actions.

You can order a specialist call by phone. or by email

• The cost of the order does not include the cost of finishing materials.

How to cut a concrete wall

With modern diamond cutting tools, you can cut an opening in almost any thickness of concrete wall. Concrete is cut into small rectangular blocks, less often into strips. You can make an opening of any size and shape using various devices. Their selection is carried out by craftsmen, based on the design features and purpose of the opening.

The construction of openings in concrete walls is carried out using the following equipment:

• petrol cutter (hand cutter);
• wall saw;
• chain saw;
• rope system;
• gas discharge laser.

Diamond cutting of concrete walls no more than 30 cm thick is carried out with a gas cutter, which uses diamond discs with a diameter of 40 cm. Cutting is carried out on both sides of the structure along previously drawn lines. With this tool you can easily create a doorway in a concrete wall. If the structure is very thick, the body of the opening can be dismantled along the entire perimeter using a rope diamond cutting machine.

For large volumes of work, laser cutting of concrete walls is carried out most quickly and with minimal energy consumption. This service is justifiably more expensive.

After cutting the concrete wall in compliance with all standards, you can use the opening for its intended purpose and begin installing arches and door blocks, and then begin redecorating the room.

carries out all types of interior renovations of apartments, private houses, office and commercial premises. They order turnkey repairs and one-time finishing and construction works from us. Our specialists will advise you on all issues related to the provision of services, develop a design project, and select the necessary materials.

Why cutting of concrete walls is ordered in

• We carry out work using full-time certified specialists. The company employs experienced interior designers, painters, plasterers, tilers, parquet floorers, plumbers, electricians and craftsmen of other specialties.
• We provide services to individuals and organizations.
• We use only materials certified in Russia.
• We accept step-by-step payments for non-cash and cash payments. For large volumes of work we provide significant discounts.
• We provide safe and high-quality order fulfillment.
• We carry out work in Moscow and the Moscow region. It is possible for specialists to travel to the regions.
• We have all the documents necessary to provide repair services. We are working on concluding a contract.
• We issue a written guarantee for the services performed.

Upon the customer’s call, our employee free of charge , draw up a design estimate and answer the client’s questions.

To place an order, send a request by e-mail

Nuances of independent work

In this case, we will talk about how to cut an opening in a concrete wall with your own hands:

1. Check that there are no utility systems or electrical wiring in the area where the opening is to be constructed..
2. Draw the parameters of the opening . Its form may be:

• square;
• rectangular;
• asymmetrical.

The arch of the arch can also be made in the form of a semicircle or a straight line.

Advice: punching openings in concrete structures is a difficult task, so if you have never done such things yourself, it is better for you to take the help of a person who already has experience in carrying out such work.

Incorrect actions can cause cracks in the walls. If they also appear on load-bearing walls, it may simply be dangerous to be in such a building in the future.

In the photo - a concrete breaker

Required Tools

If you are sure that you can make the necessary opening on your own, you should know the list of tools that will be useful:

Related article: Decorative plaster for interior wall decoration

In addition, you will need a powerful grinder and channel.

Sequence of work

Below are instructions for working with a curtain wall:

1. Apply marking tape to the future opening.
2. Using a hammer drill, punch a hole at its upper border with a depth of half the thickness of the wall.
3. Place the channel in it. In this case, the latter should fit into the hole quite tightly; it would be ideal if it needs to be carefully hammered in there.
4. Move to the bottom of the wall. Make a hole at the bottom opposite the first one and also place a channel there. In the latter, pre-make special holes for the bolts.

Tip: Channels should be installed on a mortar that contains expanding cement.

1. Connect the channels using jumpers.
2. Take a grinder and start cutting the wall along the pre-marked contour.

Tip: if you have the opportunity to get to the wall from the opposite side, to make the process easier, you can also make a counter cut there.

Please note that diamond wheels on a grinder can only help you when the wall is up to 200 mm thick (100 mm on each side). If the wall is thicker, you must use a hammer drill.

1. Knock out the concrete, but it is not recommended to allow its complete destruction. The force from the channels should be distributed over the entire area of ​​the opening.

How to make a doorway in a concrete wall yourself

Preparation and start of work

Creating an opening in the load-bearing wall of a monolithic house is associated with a number of specific difficulties, which are easier for professionals to cope with. If you decide to cut an opening in a concrete wall yourself, then you will have to take care of having a special tool. One such device is a wall saw. When performing work using this unit, you can obtain perfectly smooth vertical and horizontal cuts, eliminating the need for additional finishing.

First of all, you need to prepare all the tools that will be used in the process of cutting concrete walls:

1. Roulette, marker. They will be needed to mark and mark the lines of the future opening.
2. Laser level for precise determination of vertical and horizontal.
3. Marking tape ensures high marking accuracy and allows you to avoid the slightest deviations.
4. Construction corner for marking right angles where lines intersect.
5. Grinder with a diamond blade. Diamond cutting is recognized as the highest quality and guarantees cutting accuracy.
6. Using a hammer drill, you can destroy parts of the concrete slab.
7. An important element is the channel, with the help of which reinforced openings are created.

Before making an opening in a load-bearing wall, first of all, markings are made on the surface of the wall, marking all the lines and contours of the future opening. Not only the quality of the opening itself, but also the stability of the entire structure depends on how accurately and correctly the markings are made.

Even minimal deviations from the vertical and horizontal are considered unacceptable.

In cases where the opening needs to be expanded, there is no need to take an existing structure as a basis for marking. Marking is done “from scratch”.

When creating an opening in a main wall, a marking tape is attached to the surface and the outline of the future opening is marked on it. After this, a hole half the thickness of the slab is punched in the wall with a hammer drill and a channel is hammered into it.

Installation must be carried out with maximum effort so that the channel fits into the hole as tightly as possible.

Now you need to make the same hole on the lower border of the opening, exactly corresponding to the upper analogue. A channel is also hammered into it, having previously drilled holes for the fastening element.

This is a fairly high-quality reinforcement of openings, having created which you can proceed directly to cutting the concrete slab.

How to make an opening in a load-bearing concrete wall

The process has three sequential stages:

1. Cutting the wall.
2. Strengthening the resulting opening.
3. Coordination of openings in a load-bearing wall.

Let's take a closer look at these stages.

Cutting openings in concrete with professional equipment

Technology

During the first stage, diamond drilling of holes in the concrete and diamond cutting are performed. These operations are the most modern in the technology of working with concrete structures. The price of a quality tool in this case cannot be low.

Advice: it is better to entrust such tasks to highly professional specialists who will be able to complete them in compliance with the parameters specified in the technical specifications down to the millimeter.

Using a diamond blade allows you to avoid cracks and chips on the wall surface. As a result, the saw cuts have a smooth surface, which greatly simplifies their further processing.

In addition, this type of drilling holes in concrete does not leave behind a large amount of dust and waste. Also, cutting reinforced concrete with diamond wheels does not produce sharp or loud noises, and walls are not subject to harsh impacts.

It can also be used to process:

You can easily carry out work in inconvenient places - very close to the floor or ceiling.

Advice: if you need to cut an opening in a concrete wall with perfectly smooth and straight sides, you just need to contact professionals who will do all the work as efficiently and quickly as possible.

Wall sawing machines using this method can work equally effectively in both horizontal and vertical planes. Since perfect accuracy is achieved during the work, the output is smooth openings in the concrete wall, which do not require additional effort for finishing.

Strengthening the load-bearing wall according to GOST

Reinforcing the opening

During such work, it is always necessary to ensure the safest possible operation of the building in the future. For this purpose, reinforcement of openings in load-bearing walls is used, helping them maintain their basic ability. If she loses it, the overall structure will become weaker, and this may cause an emergency.

As an amplifier, metal structures are used that are mounted directly into the opening. For such purposes, a channel or corner is most effective. The first option is used most often and is quite economical. Its essence is this: an aluminum or steel frame with a U-shaped cross-section is attached to the opening.

Strengthening with a corner

Reinforcing the opening with a corner is, in fact, very similar to channel reinforcement, but is more reliable:

1. Metal corners should be installed along the edges. At the same time, they can be installed overlapping or flush with the wall.
2. Then it is necessary to install support posts, which will continue to take the entire main load.
3. The racks must then be tightened with studs or welding.

Coordination of openings in load-bearing walls

According to the law, before creating an opening in a wall that performs a load-bearing function, it is necessary to create a detailed design of the work, as well as subsequent approval by certain authorities.

As you know, the safety of the building itself and, accordingly, the people living in it depend on their condition. Therefore, permission for such a project is not always given; to do this, it must be carefully worked out and proven that the opening will not cause any harm to the load-bearing wall.

Minimum departure without parking cost

for work without garbage removal and strengthening of openings 8,500-12,000
rubles and
15,000
rubles for work with a wall saw and joint cutter

Prices in rubles as of July 13, 2020.

• DIAMOND HOLE DRILLING
  Drilling drilling holes in photos

  Hole Diameter (mm)	Cost per 1 cm of diamond drilling rubles
  	Gypsum - Brick	Concrete - Monolith
  22-42	32	38
  52-102	28	30
  112-122	28	35
  132-142	28	40
  152-162	30	48
  182	32	56
  200	38	60
  225	44	70
  250	48	76
  300	60	90
  325	68	98
  350*	74	115
  400*	100	130
  450*	125	160
  500*	150	180
  * Diamond drilling of holes with a diameter of 400-500 mm requires 380 V. 6 kW.
  + 10% for diamond drilling of walls more than 120 cm thick
  For collecting water with a vacuum cleaner while drilling holes, the price is negotiable

• DIAMOND CUTTING WITH A WALL CUTTER OF OPENINGS IN REINFORCED CONCRETE WALLS
  1. Less than 20 sq.m. see prices for standard openings

     Thickness of a concrete wall in a panel house	Price per 1 sq.m. by hand carvers	Diamond cutting with a ring cutter
     up to 10 cm	from 2000
     11-12 cm	from 3000
     13-15 cm	from 5000
     16-18 cm	from 7000
     19-20 cm	from 8000
     21-22 cm	from 9000
     23-24 cm	from 9500
     25-28 cm	from 10000
     29-35 cm	from 12500
     36-40 cm	from 12500
     Foundation block 40 cm	from 12500
     Foundation block 50 cm	from 14000
     Foundation block 60 cm	from 15000
     In a monolithic wall + 10%
     Prices for ready-made standard openings Cutting the opening into 2 parts or along the perimeter. Dismantling of the cut slab onto lifting parts is included in the price.
     Reinforced concrete cutting wall saw cutting depth up to 50 cm on one side. (availability 380 V, 15 kW)		from 12,000 rub. for 1 sq.m.
     Reinforced concrete cutting equipment (availability of 380 V, running water, except for residential premises).		from 12,000 rub. for 1 sq.m.
     Cutting an opening in a concrete niche in house series P44... (niche wall thickness 10 cm)		8000 rubles for 1 piece.

• OPENINGS AND NICHES IN BRICK WALLS
  Cost subject to more than 10 sq.m.

  Brick wall thickness	Price per 1 sq.m.
  1/4 brick (6-8 cm)	from 1200
  1/2 brick (12.5 cm)	from 2000
  1 brick (25 cm)	from 3000
  1.5 bricks (37-40 cm)	from 3500
  2 bricks (50 cm)	from 4500
  3 bricks (75 cm)	from 6000
  Standard openings 2.15x0.95 in load-bearing brick walls with reinforcement only with a lintel made of 16 channels without waste removal.
  Brick wall thickness	Cost per opening
  40 cm	35000
  50 cm	38000
  60 cm	40000
  Openings less than 1.5 sq.m. calculated according to the linear length of the cut (see widening of openings)
  niches in brick walls - price negotiable

• OPENINGS IN FLOORS
  Prices for volume more than 20 m.p.

  Openings in ceilings (photo)

  Floor/panel thickness	Price for cutting 1 lm.
  14 cm	from 1800
  16 cm	from 2000
  18 cm	from 2200
  20 cm	from 2400
  22 cm	from 2600
  25 cm	from 2900
  28 cm	from 3200
  30 cm	from 3400
  32 cm	from 4200
  In the monolith + 10%

• OPENINGS IN OTHER MATERIALS

  1. Wall material	Opening for 1 sq.m.	Expansion for 1 l.m.
     Expanded clay concrete, panel Breaking of the window sill block	from 4000	from 800
     Shingles, wood, gypsum blocks	2500	700

• EXPANSION OF OPENINGS IN CONCRETE WALLS

  1. Concrete wall thickness	Price per 1 running meter diamond cutting by hand cutters	Diamond cutting with a ring cutter
     8 cm	850
     10-12 cm	1100-1200
     13-15 cm	1600-2100
     16-18 cm	2200-2600
     19-20 cm	2800-3200
     21-22 cm	from 3200
     23-24 cm	from 3500
     25-28 cm	from 3800
     29-35 cm	from 4000
     36-40 cm	from 4500
     Foundation block 40 cm	3500
     Foundation block 50 cm	4500
     Foundation block 60 cm	5500
     In a monolithic wall + 10%

• EXPANSION OF OPENINGS IN BRICK WALLS

  1. Brick wall thickness	Price per 1 running meter
     1/4 brick (6-8 cm)	from 600
     1/2 brick (12.5 cm)	from 800
     1 brick (25 cm)	from 1500
     1.5 bricks (37-40 cm)	from 2000
     2 bricks (50 cm)	from 3000
     3 bricks (75 cm)	from 4000

• CONSTRUCTION OF PARTITIONS AND SEALING OPENINGS

  1. Construction of partitions without delivery and cost of material	Price per 1 sq.m.
     Construction of partitions from foam blocks from 10 sq.m.	650
     Construction of partitions from tongue-and-groove blocks from 10 sq.m.	600
     Sealing one opening with foam blocks	4500

• BREAKING WALLS. DISASSEMBLY AND CUTTING OF PARTITIONS
  Photo of how to break a non-load-bearing partition yourself

  Wall material	Price per 1 sq.m.
  Concrete: 8 cm (sledgehammer, jackhammer)	700
  Concrete: 8 cm (partially cut)	1000
  10 cm (partially cut)	1200
  12 cm (partially cut)	1400
  Brick: 1/4 brick. (6-8 cm)	500
  1/2 brick (12.5 cm)	650
  Gypsum, foam concrete, shingles.	400-700

• SCRAPING OF THE PLUMBING CABIN
  Photos and special offer for dismantling a sanitary cabin

  Plumbing cabin material: plaster, slate, brick, concrete.	Price
  Complete demolition of the plumbing cabin	12500
  Partial dismantling without breaking the rear or side wall and bottom of the sanitary cabin	8500-10000

• KNOCKING UP THE FLOOR SCREED
  Dismantling the screed

  (photo)

  Cement, concrete screed thickness	Price per 1 sq.m.
  up to 4 cm	250
  5-6 cm	300
  7-8 cm	350
  9-10 cm	400
  11-15 cm	from 550
  16-20 cm	from 850
  + 50 % on a reinforced screed

• SCALE. FINES AND SWITCHES
  1. Shooting
     walls and ceilings without a vacuum cleaner. Our conditions for picking

     Name of works	Concrete p.m.	Brick p.m.
     Shtraba electr. on the wall 2 x 2 cm	300	200
     Shtraba electr. on the wall 3 x 3 cm	350	250
     Shtraba electr. on the ceiling 2 x 2 cm	350	—
     Plumbing strip 6 x 6 cm	1250	650
     Plumbing strip 10 x 10 cm	2100	1250
     Strap 15 x 15 cm	3150	2100
     Socket-socket 1 pc.	350	250
     Approximate cost of turnkey electrics (excluding cost of materials)
     Studio apartment	35000-45000 rubles
     Two-roomed flat	45000-65000 rubles
     Three bedroom apartment	65000-90000 rubles

• BREAKING AND DISASSEMBLY PRE-REPAIR WORK
  Photo

  Name slave	Price per 1 sq.m.
  The approximate cost of pre-repair work for one apartment when demolishing partitions, dismantling a plumbing cabin, removing screed, removing parquet, knocking down tiles, knocking down plaster from walls, removing garbage (without the cost of containers).	1850-2300 rubles per 1 sq.m. of the total area of ​​the apartment
  Knocking plaster off walls	200-300
  Knocking down plaster from the ceiling	300-400
  Knocking tiles off walls	200
  Removing dry plaster (g/cardboard) from walls	200-300
  Removing dry plaster (g/cardboard) from the ceiling	300-400
  Removal of parquet and floorboards	200-300
  Removal of linoleum, carpet	200
  Dismantling logs and gratings	100-250
  Dismantling built-in wardrobes	600 (per piece)
  Dismantling door frames without saving	200 (per piece)
  Excavation of construction backfill	250-500

• CONSTRUCTION WASTE REMOVAL
  Only the garbage that remains after our work

  Name of works	Price
  Removing garbage and loading 1 container 8 cubic meters. 4 tons ( with a container cost of 7000 rubles ) including the cost of bags	16000
  garbage removal With opening (openings 2x0.9 in walls 14-18 cm thick)	10000
  Garbage removal and loading of 1 container 8 cubic meters 4 tons (excluding container cost including cost of bags)	9500
  Loading garbage into bags without removal (without the cost of bags) for one bag	25
  Garbage removal rates are based on elevator use. In the absence of an elevator starting from the 2nd floor + 3000 rubles per floor for one container
  Important! When removing waste, the customer must ensure that a vehicle with a container can access it no further than 20 meters from the entrance to the entrance. If this is not possible, we load the garbage only into bags or the cost of removal is negotiated separately. We do not specialize in the removal and removal of garbage, “Tajiks, Uzbeks, Kyrgyz, Chinese, Japanese :)” do not work for us. To reduce the cost of this work, order loading and removal of garbage from companies involved in garbage removal.
  We do not have our own containers; we order containers through dispatchers. If you have the opportunity to order a trash container cheaper, order it, we don’t mind. The average cost of a container in Moscow within the Moscow Ring Road is 6500-7000 rubles.

• STRENGTHENING OPENINGS
  Including metal and its delivery. Enhancing openings in photos

  Type of amplification Area of ​​application	Price per 1 m.p. taking into account the cost and delivery of metal
  Single-row reinforcement Standard reinforcement for openings in a concrete wall up to 15 cm	14-16 channel	from 2500
  Single-row reinforcement Standard reinforcement for openings in a concrete wall up to 18 cm	18-20 channel	from 3000
  Standard reinforcement for openings in concrete walls up to 22 cm	22-24 channel	from 3500
  MNIITEP corner Corner reinforcement around the perimeter Edging of any openings project SU-155 (Mosaic)	63 corner	from 3500
  	75 corner	from 4000
  	100 corner	from 4500
  	125 corner	from 5000
  	140 corner	from 6000
  	160 corner	from 7000
  Box reinforcement Preliminary reinforcement, complex reinforcement of openings and ceilings	12 channel	4000
  	14 channel	4500
  	16 channel	5000
  	18 channel	5500
  	20 channel	6000
  	22 channel	7000
  	24 channel	7500
  with tie rod Strengthening concrete walls, openings wider than 1.3 m. Strengthening brick walls project SU-155 (Mosaic)	12 channel	4000
  	14 channel	5500
  	16 channel	6500
  	18 channel	7500
  	20 channel	8500
  	22 channel	9500
  	24 channel	10500
  Reinforcement of the opening with 12-14 mm reinforcement, strip and corner		2500
  Trimming a concrete wall to install the channel flush with the wall (on one side)		300
  Reinforcement in place of the partition being eliminated		3000 1 pc.

• ON-SITE CONSULTATION

  1. Consulting	Price for departure
     - for carrying out dismantling work, for installing simple and complex reinforcements of openings - in accordance with legislative norms and rules for redevelopment in Moscow.	3000
     Note: The possibility of a corresponding specialist visiting the customer is determined by his availability of free time.

• DISCOUNTS AND SPECIAL OFFERS
  1. If you don't have a project and you are going to make an opening without permission or you don’t need documents, we can offer you the cheapest price for opening with channel reinforcement or a corner for a standard solution. Prices include metal (channel) and its delivery.
     

     Concrete wall thickness (panel house)	Price in rubles
     14 cm	28000
     16-18 cm	36000-38000
     19-20 cm	45000
     21-22 cm	52000

     Minimum requirement for diamond drilling: 1-2 holes with a diameter of up to 300 mm in walls up to 65 cm thick within the Moscow Ring Road except for the Central Administrative District	6500 rubles
     For an order value of 50,000 rubles (excluding strengthening of openings and waste removal)	discount from 5%
     Dismantling of the plumbing cabin with waste removal in buildings with a freight elevator in Moscow	27000 rubles
     Demolition of a combined bathroom with garbage removal (one-room apartment)	27000 rubles
     Minimum departure for scrapping a window sill block in a panel house without SRO in Moscow (except for some series of houses I-155....)	8000 rubles

Prices include transportation costs within the Moscow Ring Road without parking costs. In the Moscow region + transport costs.

Urgent order execution on the same day + 10-20%

Also, to calculate the cost of work, you can either send the project by email [email protected]

indicating the address of the property or
WhatsApp
89257715642, 89261524271

ATTENTION!

We do not have other sites, but on many Runet sites, the topics of which are: apartment redevelopment, diamond cutting, strengthening openings, cutting concrete and drilling holes, photographs of work done by the Slom Service company are posted, as well as information from the site slom-servis.ru.

Prices: Diamond cutting (diamond blade)

How to make a doorway in a concrete wall - what experts suggest

First of all, to carry out such work, obtain permission from the relevant authorities. Such an authority is the Housing Authority, which issues official approval for redevelopment. To create a doorway, a plan is drawn up, indicating that subsequent changes will not affect the comfortable existence of neighbors. Often unplanned and illiterate pickiness about the layout of one apartment will lead to a sharp deterioration in the living conditions of not only the lovely neighbors, but also the owner of the apartment.

Considering the strength of concrete, it becomes clear why it is more common to hire a specialist to make a doorway in a concrete wall than to take on the job yourself. At first glance, an easy matter turns out to be a multi-volume story. Some professionals prefer to do the work using a hammer drill or jackhammer. But both tools have their drawbacks. These are the dust and noise that invariably accompany a rotary hammer and a jackhammer. Both tools, or rather the vibration that occurs during their use, cause certain harm to human health. Even taking into account the use of special lotions to absorb vibration.

Modern experts resort to a method such as diamond cutting of concrete to make a full-fledged doorway in a concrete wall. The good method is that it does not harm the health of the inhabitants of the house. Diamond equipment will not damage the integrity of the building itself where the work is being carried out. In addition, with its help, a doorway will appear in a concrete wall if the wall turns out to be load-bearing.

When starting to do the actual work, first make sure that there are no electrical cables or pipes of any kind in the way. Inattention threatens with fatal consequences and problems with the supply of water and electricity to the house. To create a doorway in a concrete wall, special markings are made. In order to avoid the spread of dust throughout the apartment, a special wooden frame is built on which the film is stretched.

Experienced specialists will complete such work in a short time and charge a reasonable fee. In this case, neither buildings nor neighbors’ apartments will be damaged. It is worth taking a closer look at those specialists who specialize in diamond cutting. This is the most reliable way to get a hole of any kind.

Punching openings in brick walls: how to cut and enlarge a window opening using diamond cutting?

Each construction material has its own characteristics. Expanding the doorway in a concrete wall allows you to get an even cut along the entire length, which cannot be said about brickwork. When working with masonry, certain precautions must be taken to avoid additional deformations.

Before widening a doorway in brickwork, it is necessary to make reinforcement directly above the door. To do this, knock out a row of bricks approximately 150-300 mm wider than the opening and lay a lintel there. After this, markings are carefully made on both sides of the wall. The wall is cut through a little more than half on each side and after that the cut out section is carefully dismantled.

For greater convenience of work, the opening can be cut in several stages, dividing the dismantled area into several smaller ones. This will simplify the disposal of construction waste after completion of work.

Expanding a window opening in a brick wall is done in a similar way. But at the same time there is a need to perform work at height. To do this, it is necessary to comply with safety regulations for working at height and use safety equipment. If you have no experience in such work, it is better to refuse to do it yourself and invite industrial climbers.

Cutting concrete openings

Nowadays, people often have to deal with the redevelopment of premises; they often need to expand the doorway. Previously, punching concrete was quite long, noisy and labor-intensive, but with the help of modern tools you can cut an opening in a concrete wall with minimal labor and time savings. There are several types of cutting that allow you to quickly make a straight hole. It is important to know that punching doorways in concrete and their expansion can lead to cracks and deformation of structures, so the redevelopment of premises should be coordinated with the relevant structures.

Features of wall redevelopment

Homeowners often strive to make openings in the walls themselves. This is done for different purposes, as mentioned earlier.

Many people believe that the work is simple and anyone can handle it, even a beginner. However, in order to correctly cut openings in the walls, you need to have some skills in this matter and have special knowledge.

In addition to knowledge and experience, you will also need a special tool. First, you should know that new openings will require strengthening the wall. In this regard, you will need a welding machine.

A cutting tool, that is, an ordinary grinder, will help you directly make the opening. Well, to create a perfectly level opening you need a building level.

In order to securely strengthen the opening in the wall, you will need supports. When making an opening in a load-bearing wall, you will need more stable support. A channel is perfect for this purpose. For ordinary interior walls, a construction corner will be sufficient.

The denser the wall in which the opening is made, the more reliable the reinforcement should be. Load-bearing structures require a special approach and strict implementation of detailed instructions.

If you decide to make a door or any other opening in a concrete wall, you should not neglect the markings. Very detailed and accurate markings are made in advance even before starting work using construction tools. Next, the concrete is cut through and the retaining structures are immediately installed. The strengthening frame is first welded very carefully.

To make a window opening in the wall, no special reinforcing structures are required, but if you plan to remodel the doorway or create an arch, then the situation is more serious.

The choice of retaining material depends on the width of the opening and the thickness of the walls. These indicators indicate what the load on the supports will be. Thus, the higher these indicators, the stronger the supporting elements should be.

Types and characteristics

Diamond cutting

One of the most popular is diamond cutting of concrete. This method has several advantages:

• Safety of work on walls. The vibration level is much lower than when punching with a hammer drill, which significantly reduces the risk of cracks.
• Accuracy. The method allows you to make a cut exactly along the marking line and at the desired angle.
• Low noise level (within sanitary standards).
• Minimum dust and debris. Such cutting of openings in concrete does not provoke the appearance of cracks and chips as with punching, the result is the absence of debris.

The disadvantages of the method include high energy consumption, the need for cooling with water and the high cost of consumables (coated wheels).

Waterjet method

The waterjet method (cold cutting) is not far behind in popularity. Openings in concrete are made by applying a jet of water mixed with sand (abrasive) with a diameter of up to 0.4 mm. Water under pressure enters the tank, where it mixes with sand, then exits through a nozzle at a speed of up to 1000 m/s and hits the material being cut. To extinguish the residual force of the jet, a special water trap is used. With low pressure it is possible to remove concrete without disturbing the reinforcement, and high pressure allows you to make a cut through.

This method has advantages:

• accuracy and precision of cutting;
• compliance with environmental standards, absence of gases and harmful fumes;
• there is no thermal or mechanical effect on the slot;
• punching does not cause much noise or vibration;
• cutting can be done at any angle;
• It is easy to give the doorway an unusual shape.

The disadvantages of waterjet cutting include the high price of the abrasive and the large size of the installation, which does not allow its use in residential buildings.

Oxygen lance drilling

Openings in concrete are made using oxygen-lance drilling - cutting, which uses an oxygen lance (a thick-walled metal pipe saturated with oxygen). The spear is heated to 1360-1400°C, this is done with the help of foreign objects (welding, burner). When the spear lights up, the heating source is removed. The end of the pipe burns, heating up to a temperature of 2000°C. To increase the thermal force, a steel rod is placed in the spear. During the operation, the tube comes into contact with the concrete, this will help overcome the resistance of dense slag. The concrete surface does not emit its own heat, does not oxidize, and cools quickly if the tube is removed. Therefore, the robots do not make reciprocating movements during operation. To make the punching more effective, the tube is rotated (drilled) when cutting, but make sure that it does not go out.

This type is sometimes dangerous for workers; heated slag particles can fly several meters away.

Diamond cutting

Diamond cutting is a very convenient and technological process; the vast majority of European countries are inclined to this method of cutting concrete and various building materials.

This cutting method is one of the most popular and ergonomic methods for cutting a hole in a wall. This method has gained such popularity due to its versatility and environmental friendliness. Using diamond cutting, you can make new door and window openings, enlarge old openings, cut off unnecessary parts of the structure while leaving an even cut line.

An important point is that thanks to this method there is a minimum of inconvenience in terms of noise and dirt.

Let's look at how to make a doorway in a concrete wall using diamond cutting.

Tool

For work we will need:

• plumbing tools (tape measure, electric drill, level, marker);
• wall saws - they are most often used on construction sites, as they require a large amount of water and a 380V electrical connection. In addition, they are very bulky in order to make openings in living quarters, in the concrete wall of an ordinary room. But it should be noted that wall sawing machines are indispensable when dismantling reinforced concrete structures;
• a hand cutter is the most common tool; to operate, it requires a connection to water (consumption 50-100 l) and electricity (220V). Can be used both on construction sites and in residential premises. It is mainly used in residential buildings.

Work process

When starting work, you need to mark the doorway using a level tape measure and a marker; the measurement should be done as accurately as possible, since the degree of destruction of the wall is minimal. Openings for a door or window are cut in a concrete wall in several stages: first it is cut on one side of the wall, then on the other side, then everything is divided into separate sections. After this, the pieces of cut concrete are pulled out of the wall and removed from the room.

This method is considered environmentally friendly due to the fact that during operation, the cutting discs are washed with water, so dust does not disperse throughout the room, and is removed immediately after work with a conventional industrial vacuum cleaner.

It is necessary to wash diamond discs with water not only to get rid of construction dust, but also for cooling, since they constantly heat up during operation. The cut surface after working with diamond discs remains smooth and does not require significant additional plastering.

Robot tools

Drilling is used to make technological holes, sockets, and grooves. An opening in a concrete wall, or its expansion, is most often made using cutting diamond elements fixed in different types of tools. If the concrete is of small thickness, cutting can be done with an angle grinder (“grinder”) and 105-125 mm wheels.

Spraying water while working will help reduce the amount of dust and preserve the disc. If contact with water is not safe, you will have to cut “dry”. But to cool the segments, after a certain time you will have to remove the disk from the cutting zone and let the machine run “idle” (from 10 to 50 seconds).

You can cut an opening more than 10 cm deep using professional circular saws (hydraulic, electric cutters); they will quickly cut through concrete to a depth of 15-16 cm on one side. Discs of 350-400 mm are used. When cutting concrete, workers must wear respirators; concrete dust can enter the lungs and cause serious illness. You should also wear gloves and goggles.

Effect of wall thickness

Wall thickness is the main indicator that helps determine the cutting method. If the depth of the slot is no more than 10 cm, you can use a grinder. If the concrete thickness is 8-10 cm, you need to work with a high-power machine. If the wall is 15-16 cm, you need to use a circular saw (discs with a diameter of 350-400 mm). You can use a grinder, but you will have to work in several stages and there is a risk of the tool overheating.

For concrete with a thickness of 30 cm or more, you need to use a special wall cutting tool, it can be of manual or machine type. Concrete up to 60 cm thick is cut with a tool such as a chain saw or ring cutter. Concrete over 60 cm thick is cut using machines using a 100 cm disc, or rope cutting devices.

How to make an opening?

Before you start cutting the doorway (expanding it), you need to mark the wall: draw lines with a pencil or chalk. To make an even slot, you can attach slats along the markings along which the grinder will move. The rail is secured with plastic anchors. Before starting work, temporary support structures must be installed.

By moving the grinder along the slats (guides), a cut of up to 1 cm is made along the entire perimeter of the future opening. The pre-slot helps determine the correct disc choice. Therefore, you need to carefully inspect the disc and assess the degree of wear. If there is no damage, you need to continue working, gradually deepening the cut (up to 15 mm each).

If the concrete is thicker than 100 mm, use a special concrete saw. When cutting reinforcement, the cutting speed must be reduced. In general, the principle of operation is the same as with a grinder; each cut is made to a depth of up to 3 cm.

Reinforcing the opening

After cutting the opening or expanding it, it is necessary to strengthen the walls with additional metal structures. There are the following types of strengthening of openings:

1. Single-row - strengthening is performed using a channel. A U-shaped frame is made around the opening. In such structures, different types of channels and methods of fastening to the wall can be used. Places where the channel does not adjoin the wall are filled with mortar.
2. Corner - edging is done with corners on both sides of the wall, the corners are fastened together with pins and metal plates. Such designs are used most often.
3. Combined - channel and corners are used for strengthening.

Return to contents

Coordination of openings in load-bearing walls

The construction or expansion of the opening must be carried out in accordance with all standards, with the permission of the relevant authorities. When a decision is made on redevelopment, different indicators are taken into account:

• the floor on which the redevelopment is being carried out (the higher the floor, the less the load on the wall);
• year the house was built;
• the width of the opening and its placement (joint of slabs, distance to external walls);
• condition of the walls in the room.

Redevelopment can be carried out by organizations that have permission to carry out such work. Recently, people are increasingly remodeling buildings, expanding old openings in walls, and installing new ones. Diamond cutting is the leader in dismantling robots. Using cutting elements, concrete with a thickness of more than 60 cm is cut. The waterjet cutting method is the most environmentally friendly and safe. Oxygen lance drilling is effective, but requires certain training and skills, and there is a risk of burns.

When forming door openings we use:

• hand cutters with water supply from Husqvarna and Hilti - if the walls are built of concrete, the thickness of which is no more than 30 cm;
• wall saws and rope machines - if the supporting structures are made of reinforced concrete with a thickness of 40 cm or more;
• wall cutters, cable machines and drilling rigs - for cutting doorways in walls of any thickness, built from various materials, be it concrete or brick.

Video of cutting a door opening

In addition to forming openings for doors, as well as widening and cutting openings in walls with reinforcement, we will readily undertake the implementation of:

• cutting niches for safes;
• eliminating irregularities in the edges of walls;
• cutting off partitions, window sill blocks and plumbing cabins;
• cutting out channels for wiring.

Standard door opening sizes

Width Height Width Height

The work is carried out according to the following scheme:

• you leave a request for work;
• We advise, determine the final price and agree on the timing of the work;
• after the first two stages, our specialists will deliver all the materials and begin marking the wall;
• direct cutting is carried out after the marked opening is divided into separate segments;
• at the final stage, you accept and pay for the work completed by us.

If you are thinking of changing the layout or expanding your apartment, our specialists will help you with this, using diamond cutting technology and using the latest equipment.

We know that on the territory of the Moscow region Law No. 16/2014-OZ of 03/07/2014 is in force, which does not allow violation of silence:

• from 21.00 to 8.00 on weekdays;
• from 22.00 to 10.00 on weekends and holidays;
• from 13.00 to 15.00 on weekdays in dormitories;
• from 7.00 to 23.00 daily for apartments located in the capital.

Our specialists are ready to carry out their work at hours that are “comfortable” for you within the framework provided by law.