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Expand the concrete doorway using a hammer drill. How to widen a doorway. How to safely widen a window opening in a brick wall

Projects old and modern multi-storey buildings do not always suit individual apartment residents. Narrow doors create discomfort and prevent the passage of large furniture. To solve the problem, widen the openings by demolishing part of the partition. Meet the project with reverse side question - too much wide doors. The overall sash sags on its hinges under the weight and looks ugly. To solve this problem, apartment residents are beginning to narrow doorway during a major overhaul.

To expand or narrow doorway V panel house you will have to change the length of the adjacent wall. IN technical passport The door to the apartment is shown schematically. Dimensions are usually not indicated, but the BTI has all the data. When expanding or narrowing the passage in the wall, the layout of the room, originally provided for in the project, is violated. Over time, if you want to sell the apartment, great difficulties will arise with the preparation of documentation.

By law, changing the size or location of the opening for door block is considered a redevelopment. It is advisable to legitimize the corresponding actions. To obtain permission to widen or narrow a door interior opening in a panel house, you need to contact the BTI.

Tool

To narrow or widen doorways in an apartment, you will need a simple construction tool:

• hammer, sledgehammer, long chisel;
• hand saw for wood;
• plane;
• hammer drill, drill, screwdriver, grinder;
• pliers, figured and straight screwdriver.

The set of materials depends on the work performed. To narrow the interior doorway you will need wooden beam, metallic profile, drywall, brick or foam block. The blocks are laid using cement mortar, and the gypsum board sheets are fixed to the metal frame with self-tapping screws. When expanding the doorway in height, you will need a metal corner to strengthen the upper lintel.

Ways to reduce a passage in a wall

Narrowing an old doorway during redevelopment involves reducing the size of the door in height or width, as well as in both parameters at the same time. The procedure can be performed in three ways: using timber, drywall or blocks.

Most reliable method To reduce the opening in the wall is to partially fill it with blocks. The option is ideal for front door. Suitable materials include brick, cinder block, blocks of cellular concrete. It is better to use foam block or aerated concrete for interior partitions. The material is light, easy to cut, but absorbs moisture. It is slightly less durable than brick.

The work consists of the following actions:

• to reduce the height of the passage in the wall, prepare a jumper from a beam or a metal corner;
• the workpiece is cut off larger than the width of the passage, and landing nests are made under it at the ends of the wall using a grinder;
• After fixing the lintel, the space above it and the sides of the passage in the wall are filled with blocks.

When choosing this method, take into account the weight of the blocks. The heavier the material, the stronger the jumper will be needed. If the whole block does not fit into the gap above the jumper, it is sawed with a grinder or wood, polystyrene foam, or polyurethane foam are used for filling. The disadvantage of porous blocks is the absorption of moisture. To prevent fungus from appearing, the structure is treated with protective impregnation.

How to reduce a doorway with timber?

It is easier for an apartment dweller who does not have construction experience to reduce the width of the doorway with timber, and also to lower it. The work order consists of the following stages:

1. The thickness of the timber used to narrow the doorway is adjusted with a planer so that the workpiece does not protrude beyond the plane of the wall. The surface is treated with a grinder. In this case, the finishing material will fit better.
2. The dimensions taken from the opening are transferred to the timber. Use a saw to cut the pieces to the required length and fix them to the ends of the wall. The thickness of the beam should not protrude beyond the plane of the wall, and the upper lintel should be cut to such a width that it fits tightly into the ends of the side walls.
3. When drilling mounting holes Recesses are provided on the timber to allow the heads of the fastening elements to be hidden flush.
4. The posts and lintel are fixed to the wall with anchors, bolts or other parts.
5. Large gaps between the frame and the end of the wall are filled with polyurethane foam. Small cracks are sealed with putty.
6. The finished structure is impregnated with a primer. After drying, they are covered with gypsum board, chipboard or other sheet material.

When reducing the doorway, the frequent dynamic loads acting on the door are taken into account. To prevent the structure from becoming loose, the timber is attached to the wall as often as possible.

After you have managed to lower the door opening with timber, the question arises of how to close the space from above. The easiest way is to cover it with plasterboard, plywood or chipboard. A small gap is hidden with wide platbands. Before finishing, the cracks are filled with foam.

The advantage of this method is the ease of installation of the timber. The downside is the installation limitation. In humid rooms, the wooden frame becomes deformed and cracks due to temperature changes. The method is not suitable for the bathroom and kitchen.

Reducing the span with plasterboard

To build up an interior doorway with plasterboard, on the installation side of the profile frame, clear the wall of various materials and treated with a primer.

Seal the opening above the door and across the width with plasterboard if there is a difference in the size of the passage in the wall and door frame does not exceed 100 mm. To fix the gypsum boards, a frame is made from a galvanized profile. The frame turns out to be quite weak and is easily deformed when large gap when opening the sash. Plasterboard construction is best used for arched passage. To strengthen the gap between the profile and the ends of the wall, fill it with pieces of timber or polyurethane foam.

How to reduce a doorway with foam blocks?

Working with aerated concrete and foam blocks is easy. The material is not heavy and can be easily cut even with a regular hacksaw. Blocks are usually used to narrow passages in thick walls and panel houses.

It is easier to reduce the width of the door opening. The blocks are laid out in a column from the floor to top crossbar. If it is additionally necessary to reduce the height of the passage, a lintel made of wooden beams is cut into the ends of the walls. The gap is sealed with pieces of foam blocks.

The laying out of blocks begins from the floor. It is important to initially prepare a flat and durable surface. Pieces of reinforcement are embedded between the rows. One end is driven into the wall. This strengthens the structure. The rods will not allow the foam block pillar to move away from the wall.

Used as a mortar for laying blocks adhesive composition on a cement base. It is sold dry in bags and to prepare it, just add water and then mix well. The solution is applied to the blocks with a notched trowel.

The finished structure is impregnated with an antifungal compound, plastered, puttied or sheathed with plasterboard. After finishing, the door frame is installed.

Narrowing the opening with brickwork

When reducing a wide opening with bricks, the work requires similar construction actions as in the case of a foam block. The difference is the heavy weight of the material. Instead of a timber lintel, it is better to use metal corners.

They begin to build up a new doorway from the side, not forgetting to reinforce the rows. The masonry is carried out using a solution prepared from three parts sand and one part cement. Water is added until a homogeneous thick mass is obtained. The mortar is applied to the brick with a trowel.

How to reduce a passage with concrete walls?

To for new door To reduce the interior doorway with concrete walls, any of the considered methods will do. The best option- use of blocks. In a lived-in apartment, work begins with exposing the wall. Removal finishing materials will allow you to assess the condition concrete structure. If there are severe defects, the wall will have to be partially destroyed, and the resulting widened passage will have to be narrowed again.

To build up an interior doorway with blocks from above, the wall is partially destroyed to insert a lintel. If there was electrical wiring or other communications near the old door frame, they need to be moved.

How to widen a doorway?

To increase the doorway, you will have to remove part of the wall. You can widen the passage in concrete and brick partitions from 0.7 to 2 m. In an apartment on the first floor, they adhere to the recommended width of 1 m and carry out additional reinforcement of the structure. It is allowed to increase the height of the doorway up to 2.1 m.

Widening the passage in the wall begins with dismantling the door block. The sash is removed from its hinges. The box is cut with a hacksaw and removed with a pry bar. The expansion of the interior doorway is done to install the door bigger size. According to the dimensions of the new block, markings are drawn on the wall.

The excess area is removed in two ways:

• Gentle. To cut openings, a grinder with a diamond wheel is used. There is a lot of dust, but the possibility of cracking the entire partition is excluded.

• Aggressive. When removing pieces of the wall, a sledgehammer, hammer, chisel, or hammer drill is used. If you overdo it, you can damage the integrity of the entire partition.

An enlarged doorway must be strengthened. It is especially important to strengthen the pier where the old lintel is removed when the passage is expanded in height. The main methods of reinforcement are welding metal corners, channels, tires made of thick sheet steel along the ends of the walls, or installing tie beams with bolts.

Brick house

The peculiarity of expanding the doorway in brick wall is accuracy. In order not to disturb the masonry, it is better not to hit the partition with a sledgehammer. You can widen a doorway in a brick wall with a minimum amount of dust using a hammer and chisel. Bricks are knocked out one by one on the marked area. You can get the job done faster and get the smoothest edges possible by using a grinder, only after cutting there will be a lot of dust left.

The transfer of the block lintel is carried out by increasing the height of the old doorway. Additionally, the top masonry is reinforced with welded channels or tie beams.

Panel house

To expand the interior doorway in concrete wall A grinder with a diamond blade is used in the same way. The panel is cut in turn on each side. If the diameter of the disk is not enough to cover the entire thickness of the concrete, slots are made on both sides of the partition.

You can widen a doorway on a concrete wall without dust using an impact drill. Through holes are drilled along the contour of the marking in frequent steps, and only the reinforcement is cut with a grinder. Pieces of concrete can easily break off with a sledgehammer. If it is necessary to increase the height of the passage in a concrete wall, the old lintel is similarly dismantled.

Large openings are widened in squares, removing sections of the concrete panel from bottom to top. The ends are reinforced with a frame, welding on sheet steel tires or metal corners.

By changing the dimensions of the passage in interior partition, it is important to carefully carry out the dismantling work, install a reliable new structure and coordinate the redevelopment with the BTI.

Increasing laser cutting passage

Not always standard layout apartments satisfy the wishes of their owners. In this case, there is a need for its redevelopment, and often the doorway needs to be expanded.

Such work is carried out after accurate calculations and availability special tool. The article will tell you how to do this.

Augmentation process

Any redevelopment of the apartment requires compliance building codes. When moving or expanding the door opening, in load-bearing wall weakening of the house structure and the occurrence of deformations should not be allowed. Because of this, the redevelopment project must be approved by the state supervision authorities.

Some ways to widen a doorway are presented in the table:

Expansion method	Peculiarities
Rough enlargement	To carry out DIY work you can use: Hammer. Sledgehammer. Jackhammer. In this case, the contours are preliminarily outlined, and then the excess material is knocked down with tools. The process is quite labor-intensive, and the formation of microcracks that appear due to strong impact loads can lead to a decrease in the strength of the wall structure.
	In this case, a grinder is used, with which you can quite easily enlarge the door opening along the intended contour. The disadvantage of the process is that you need to cut the wall on both sides. Dry cutting produces a lot of dust and rapid wear of the diamond blade.
	This method is accompanied by the use of a spray bottle, which irrigates the surface while working with the grinder. It is more rational to use a special construction cutter equipped with a diamond blade large diameter and a water container. In this case, in one approach you can cut off excess sections of the doorway in the wall the right size with minimal contamination. But the price of such equipment is quite high.

Standards and approvals

Regardless of the purpose of the building, it has an opening for a door to enter the building and for communication with neighboring rooms.

There are several reasons why you need to increase the size:

• Many people want to visually expand the space, make it light and spacious, without changing the dimensions of the living space, as in the photo.

Increase

• The opening cannot accommodate the purchased modern fashionable door design.
• Making doors to order.

Advice: Before enlarging the opening in a panel house, you should keep in mind that this is a painstaking and not entirely simple work with existing risks, in compliance with standards and clearance norms.

There are no particular problems in enlarging the door opening in any wall.

But in a load-bearing wall they are quite large:

• In the absence of a building plan, it is impossible to determine the purpose of the wall, whether it will be load-bearing, which will require additional reinforcement of the structure, or whether it is enough to just reinforce the ceiling with beams.
• It is necessary to have agreement with the BTI. This will confirm the fact that the load on the wall with an increase in the width of the door will not exceed the impact norm.
• You must obtain the appropriate permit to carry out work.

When remodeling an apartment, it is necessary to take into account the parameters of the standards specified in SNiP.

The following dimensions are provided for door blocks:

• The width of the structure is from 55 to 80, which depends on the purpose of the opening.
• Doors for plumbing units, transitions to the kitchen - 55 centimeters.
• For living rooms, bedrooms and entrances - at least 80 centimeters.
• Height can vary from 190 to 210 centimeters.
• Thickness - 75 millimeters.
• Manufacturers offer ready-made blocks with frame widths ranging from 15 to 70 mm.

Advice: When determining the dimensions, you should adhere to the requirements of SNiP and familiarize yourself with the existing restrictions on its expansion.

How much you can expand is suggested by the instructions, which combine the following rules:

• The maximum permissible dimensions of the partition for a load-bearing wall can be: width - 2 meters, height - 2.1 meters.
• As the size increases, the spans between neighboring rooms it is necessary to additionally strengthen the ends with supports.
• Extended to maximum sizes and more passages in the main walls, it is recommended to strengthen them with supports in the center.

Strengthening

Important documents when expanding the passage between rooms in an apartment are:

• Plan of work stages.
• Architectural plan.
• Floor plan of the building.
• Extract from the house register, if available.
• Certificates from the BTI regarding permission to carry out redevelopment.

Preparation for work

Having decided on which wall the doorway will be expanded, you need to find out about it:

• Is there hidden wiring inside the wall?
• Presence of fittings or pipes.
• Is there a chimney and where is it located?

To obtain this information, you must use a metal detector. If any obstacles are found in the wall, they can be removed:

• Move the electrical wiring to another location.
• Retreat at least 300 millimeters from the chimney.
• By dismantling pipes and moving them to another place - but this will require the help of a specialist.

Extension order

Interior enlarged passage

Increasing the doorway in walls made of any material involves performing sequential actions:

• Marking the required dimensions of the structure.

Marking

• Dismantling the desired area.

• Strengthening the opening to ensure its strength and prevent collapse or deformation.

To dismantle the structure you can use percussion instruments sawing or hole drilling equipment.

Depending on the material from which the wall is built, these may be:

• Hammer.
• Jackhammer.
• Special a circular saw with a diamond wheel.
• Bulgarian.
• Electric drill with diamond drill.
• Hand tools: chisel, hammer, sledgehammer.

Advice: More attention should be paid to working with high-strength concrete walls. It requires a lot precise work, and excluding vibrations and damage to surrounding structures.

For work you will need the following materials:

• Wooden beam.
• A corner with dimensions of at least 35x35x4 mm.
• Components for making concrete mortar.
• Boards.
• Hardware.

To better imagine the process of increasing the door opening, you should watch the video in this article.

Expanding the passage in a brick wall

The work is performed in the following sequence:

• Mark along the contour.

• If necessary, the jumper is moved.
• The upper masonry is reinforced with a metal channel.
• Using a grinder, a part of the wall is cut out according to the marks.

• To clear the perimeter, use a chisel with hammer blows, a drill or a hammer drill.
• It is better to remove excess elements from the wall by hand, after first removing the mortar from the seams (see).
• A welded structure is installed around the perimeter.

Advice: After completing the work, you should check the integrity of the wall brickwork. If splits or cracks are found in the seams, they need to be plastered.

Expanding an opening in a concrete wall

Extension in a concrete wall: installation procedure

To carry out the process correctly, you must first:

• Prepare the space for work: cover furniture and other objects with construction film, which will protect them from excess dust.
• Buy special bags for collecting pieces of wall and other debris, which are then quickly and easily taken out and loaded into the car.
• Use a respirator and special glasses to protect your face and eyes from dust and small fragments during dismantling.

Stages of increasing sizes:

• The old door structure is dismantled:

1. A nail puller tears off the trim and trim.
2. The canvas is removed from the hinges by prying it from below with a crowbar.
3. Cut with a grinder vertical racks and come off with the same nail puller.
4. The top jumper is torn off or left in place.

• A contour for increasing the span is marked along the perimeter of the wall.
• Holes are made along the contour with an impact drill to simplify further destruction.
• The panel is cut one at a time on each side.
• After cutting through the reinforcement, the remains of the wall are removed with blows with a sledgehammer.
• The opening is reinforced with metal corners, strips or pieces of rod.

Order of increase

No matter how the expansion is carried out, it is necessary that the entire process is carried out in accordance with safety requirements.

Repair work In a private house, redevelopment of the premises is often suggested. One way is to change the doorway to improve practicality or decorate the room. This process is not always simple, as it requires compliance with many rules. You can only find out how to expand a doorway correctly from a specialist who will perform all the necessary calculations.

What is it for?

Expanding a doorway involves increasing its main dimensions by certain values. Such operations are not performed very often, since all dimensions are adjusted to fit standard sizes door leaves. But sometimes you need to widen the hole. There are several main reasons that lead to such actions:

1. Redevelopment of the premises. This process involves changing the main positions or dimensions of the main structural elements Houses. This is done quite rarely, since in most cases it requires coordination with various government organizations.
2. Door installation. Many owners of apartments or private houses decorate their premises with beautiful wide door panels. This additionally provides several advantages, since, if necessary, it allows you to carry large items through the doors.

Design Features

The technology for expanding walls is quite complex and cannot always be done manually. Very often used for this auxiliary tools. Depending on the destruction technology, such operations can be divided into several types:

1. Manual. Changing the dimensions of an opening in a partition or load-bearing wall is carried out using human physical effort. For this, several types of chisels, crowbar, hammers, etc. are used. One of the advantages this method is that it is performed practically without dust, but at the same time it takes a relatively long time.
2. Mechanical. This approach involves the use of power tools, which greatly simplifies the destruction of materials. Such operations are performed using rotary hammers, impact drills and grinders of varying power and size. With their help, you can quickly increase the width in both brick and concrete walls.

The technology for expanding the doorway also depends on the wall material:

Panel house

Often all elements are reinforced concrete walls. The procedure for dismantling part of this material begins with marking the opening using chalk or a marker. After this, using a grinder, a carving is made along the drawn contour.

This operation is performed on both sides of the wall. This allows the concrete to be completely cut away.

But such an operation requires a powerful tool, which not everyone has. You can destroy the wall using a hammer drill and a drill. To do this, holes are made along the perimeter of the future opening at a distance of approximately 5 cm from each other. After this, concrete particles are successively chipped off using a hammer drill. If reinforcement is found, it can be carefully cut with a grinder.

Brick houses

Brick is much easier to dismantle than concrete. But there is a nuance here. The upper part of the doorway assumes the presence of a metal mortgage (support).

If you increase the width of the opening, then you will need to install a new support beam. It should be 10 cm wider than the new dimension on each side. Dismantling works brick wall are carried out after installing a new support.

To remove bricks, you can use either a grinder or a regular hammer and chisel.

Wooden house

Increasing openings in similar designs involves normal cutting. To do this, you can use either a chainsaw or an angle grinder with a special circle.

When performing such operations with load-bearing walls (regardless of the material), new structures should be further strengthened. For this, both metal corners (wooden buildings) and large channels can be used, which are fastened along the entire perimeter of the new hole.

How to increase?

Very often doorways have non-standard dimensions that need to be reduced. Here it is already necessary to apply material extension to one of the ends of the surface. There are several main ways to do this:

• Brickwork. This method involves erecting a small frame on the side of the wall. In order for the structure to hold up well, you can connect it to the supporting element using concrete and reinforcement.

Please note that this way you can only increase the width, but it is not suitable for changing the height parameters.

• Drywall and wood. This option involves constructing a frame inside the opening. If drywall is used, then a metal frame is first constructed to which it is attached. This approach allows you to reduce both width and height. But if you plan to install doors, then the plasterboard structure should not be located on the side where the hinges are placed, since here high load. As for wood, to change the opening they simply line the perimeter with it. For this purpose, a wooden beam of a certain thickness is used. It can be fixed using self-tapping screws or anchors. It all depends on the type of wall they are attached to.

• Plaster. This approach is used when the opening needs to be narrowed by a small amount. This substance can be applied to both brick and concrete and wood. It is important to use special strengthening systems for this.

How to increase height?

Expanding a doorway does not always mean changing its width. Very often it is only necessary to dismantle top part system that will lead to an increase in height. Influences of this kind are not always easy to implement. This is due to the fact that a metal lintel is often installed above the doorway, which takes up the entire main load.

The height increase algorithm involves performing several sequential operations:

1. Initially, supports are installed that, when dismantled, will prevent the material from collapsing on a person’s head.
2. After this, using a grinder, cuts are made in the right places in concrete or other material. In this case, you also need to get the jumper.
3. When everything is ready, the material is knocked down using a hammer and chisel. You can also use a grinder impact drill etc. Once the wall removal is complete, a new lintel must be installed at the top of the new opening. It is secured with a concrete screed.

How to agree?

Extension doorways can sometimes break design features walls. This often concerns load-bearing structures which bear the main load of the building. If changing the parameters of this system significantly affects the characteristics of the wall, then this is considered a redevelopment, which must be agreed upon with the relevant government organizations.

All architectural documentation is located in the BTI, where you need to apply for permission to change the dimensions of the opening.

Please note that if such operations are performed on non-load-bearing structures, then expansion can begin without the approval of the BTI.

It is only important to indicate information about the result obtained so that the organization can make changes to the corresponding plan.

If redevelopment (increasing the doorway) is carried out in a load-bearing wall, then it begins only after prior approval. To do this, you need to submit a corresponding application to the BTI, after which specialists will analyze the condition of the entire structure. Then calculations are made to determine whether a significant load will be created on the wall.

Widening a doorway is a very responsible and time-consuming task. To cope with such a task, you will have to make a lot of effort, and we are not just talking about physical actions. After all, before starting such work, it is necessary to obtain the appropriate permission. In this article we will look in detail at all the intricacies of the process of increasing the doorway, and also provide several specific examples successful implementation of the redevelopment.

Peculiarities

Many people are interested in whether working with an opening is considered redevelopment. The answer to this question is clear: redevelopment is considered to be absolutely any structural change in the premises, which is listed in the corresponding BTI plan.

If you want to redo a doorway in a private house, you won’t have much trouble. However, when it comes to expanding the opening in multi-storey building, then things take a completely different turn. To implement such a decision, a special project documentation. And all subsequent work must be carried out strictly in accordance with the papers. After all, the slightest miscalculations can lead to disastrous results. For example, mistakes when independently interfering with the structure of a house can provoke the destruction of a building or a load-bearing wall. In addition, in this case, you will receive a monetary penalty from government authorities.

And eliminate Negative consequences work will have to be done at your own expense.

When you need to redo a doorway in a panel house, you can easily find out the specific dimensions and possible options design changes. Since such houses were built according to the same type, the requirements for them are the same, while increasing the height or width of the opening in brick building possible only after preliminary calculations.

In general, the size of most interior and entrance doors does not exceed 70 or 80 centimeters. The maximum permissible dimensions of the structure are no more than 200 in width and 210 centimeters in height.

Violating such parameters is possible only with additional strengthening.

How to expand?

There are several ways to perform this task, and to complete each of them you will need different instruments. Let's take a closer look at the three main methods.

Using a hammer drill and jackhammer

This is the most obvious, the so-called “rough” method. To work, you will need a hammer drill, sledgehammer or other similar tool. Next, you need to mark the areas around the perimeter of the doorway that need to be removed. Now all that remains is to knock down the excess concrete with a hammer drill or jackhammer. To implement this method, no special preparation or long time is required.

However, we should not forget about significant shortcomings such a reception. Firstly, such a process is very difficult and energy-consuming. Secondly, due to excessive load or improper handling, cracks may appear in the concrete wall. This means that additional Finishing work to hide any flaws that have appeared. Moreover, too large gaps can cause significant damage to a load-bearing wall.

It is very important to remember this when performing work and strictly monitor the process.

Using a grinder

If you want to quickly and easily make cuts in reinforced concrete walls, then you can use everything famous instrument- Bulgarian. It can even cut through rebar with ease. Just be extremely careful when making a cut, since it is important to make it equally on both sides of the wall. The disadvantage of this method is the formation of a large amount of dust and rapid wear of the diamond blade of the grinder. And also the fact that an even cut requires special skill.

But you can use a little trick to make the process cleaner. To do this you will need a regular water spray bottle. Simply spray the wall surface regularly to prevent the spread of dust and dirt.

This way, the process of increasing the opening will become much more convenient and safe.

Using a construction cutter

This option for changing the size of the doorway is the most acceptable. A special construction cutter is a tool that consists of a diamond cutting disc, as well as containers for storing water. Using such a device will allow you to quickly, accurately and without dust expand the opening in width and height in wooden house or brick building.

Upon completion of the process of enlarging the opening, it is important to carefully inspect the walls. If any chips or cracks are detected, they should be repaired immediately to avoid further destruction of the material.

How to increase?

So, now you know exactly how to increase the size of a doorway. But what to do if you need to reduce them? This situation may arise if you cut off the excess when expanding the space. Or you simply needed an extension to install a smaller door.

The specific method required to implement such work depends entirely on the material from which the wall is made. When building up a brick opening, bricks, cement mortar, a spatula and other auxiliary tools are used. Take accurate measurements and start laying. Please note that to increase the height of the opening, it is important to make a lintel from wooden block and fittings.

If you neglect this rule, the structure may simply collapse.

When you need to reduce the opening for interior door, you will need regular drywall. After taking all measurements, apply a special adhesive composition to the side and top of the opening. Then glue the pre-cut drywall pieces. This method is the most optimal when remodeling an apartment. It won't require a lot of time or money. To build an opening in a wooden house, you should use timber.

And to change the size of the opening in a concrete wall, it is optimal to use cement mortar.

How to agree?

As we said above, it is important to coordinate work on changing the size of the door opening with BTI.

First of all, you need to prepare a package of all necessary documents, which include:

• relevant statement;
• redevelopment plan;
• BTI technical passport.

You will also need a special permit from the SRO, which will state the safety and possibility of redevelopment.

So, now you know everything about the process of widening and reducing the door opening. The information from our article will help you quickly and easily cope with this task. The main thing is to do correct calculations and strictly monitor the safety of the procedure.

We also remind you once again that carrying out any redevelopment without the appropriate permission is strictly prohibited.

Successful examples

Let's look at a few specific examples of correctly changing the size of a doorway.

Expansion of an opening in a load-bearing wall with reinforcement

Presented here clear example competently enlarge the opening in compliance with all necessary rules. Concrete cutting was carried out according to a pre-marked pattern, after which the structure was strengthened using metal frame. This prevents the appearance of cracks and faults in the future. This is very important when it comes to a load-bearing wall, because its deformation can lead to the destruction of the building.

Enlarging the opening in the form of an arch

this work requires a lot of experience and skill. Accuracy and precision in carrying out such a process is achieved with the help of the professionalism of the craftsmen and the efficiency of special equipment. Specifically, technology was used to increase this opening diamond cutting. It's modern and effective way to change the size of the doorway. The resulting structure is securely fastened with durable metal plates, which are attached to special anchor bolts. It should be noted that to implement such a project, you should contact only experienced specialists.

There are times when when installing a new door you need to widen the doorway. For example, when remodeling an old home, when the owners want to radically change the interior of the apartment. In addition, the purchase of large-sized furniture requires expansion, since there is no other way to bring it into the apartment. This problem usually occurs among owners of old small apartments built in Soviet times.
An example of expanding a doorway onto a balcony

According to GOST, there are certain standards for door parameters, but in reality, doorways can deviate upward or downward. IN given time in most cases, manufacturers adhere to generally accepted standards and produce canvases in accordance with GOST. But, if the opening does not fit in size, then you need to overpay considerably when ordering a custom door. It is worth noting that in standard documents, standard sizes are specified depending on the purpose of the rooms in the apartment. Let's consider the dimensions according to GOST for a one-room apartment:

If the apartment has many rooms and there is a living room, then with an opening height of 2000 mm, the width can vary from 800 to 1200 mm.

An example of expanding and strengthening a doorway to the living room

If the doorways in your apartment meet the standards, then you will not have problems choosing a new door leaf, since the range of these sizes in stores is large.

If there are significant deviations in any direction, then you need to order an individual model. It will not be cheap, and if you add the installation price to the cost of the door, you will end up with a rather expensive pleasure.

It will be much cheaper to carry out such a process as widening the doorway under a regular door. This option is inexpensive and widely available. What to overpay for individual order and for additions or a thicker frame, it is better to slightly adjust the door opening itself and.

Read also

Installing a water heater on a plasterboard wall

Extending the doorway of a panel house

It is important to know that before carrying out work to expand the doorway of the front door, you need to obtain permission from the relevant authority, since this is a redevelopment that needs to be legalized.

Stages of expanding a doorway in a panel house Before starting work, you need to carry out preparations and cover the furniture with polyethylene. In addition, it is worth stocking up on safety glasses and gloves to prevent injuries during work. To increase the opening in the apartment panel house you need to do the following:

Expanding the opening for doors in a brick or concrete wall

Extension in a concrete house

Before starting work, you need to prepare a drill and more than one, a chisel, a hammer drill and a sledgehammer. This will be a drilling expansion method. There is another way to enlarge the opening using a grinder, but you should understand that this is a very dusty job. Drilling method – technology:

Interesting: in the case of expanding the entrance in a concrete wall, it is not necessary to reinforce it.

Expanding the opening in a brick building

We looked at how to expand the opening in a panel house or a concrete wall, but questions may arise about the increase in a brick building.
An example of expanding and strengthening an opening in a brick building In the case of brick wall some difficulties may arise, since if you apply the force incorrectly, the entire brick construction may collapse, especially if it is made poorly. Step-by-step instruction:

• dismantle the door and outline the expansion contours;
• in this case, it is necessary to strengthen the opening using a profile corner and jumpers;
• You only need to do the work with a grinder, since using a sledgehammer or a hammer drill, you can knock out excess bricks;
• as soon as the opening is enlarged, inspect the brickwork of the wall; it should remain intact. If there are cracks, they are sealed cement mortar and after .

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The video shows in detail how to increase the opening in a brick building.

Ways to strengthen the opening after expansion in the main structure

When the doorway is located in a load-bearing wall and needs to be made larger, you need to understand that the load on this structure will be increased, so you need to strengthen the opening first. You can use special profile structures or ordinary fittings, it all depends on financial capabilities.
Algorithm for strengthening an enlarged opening for doors in a supporting structure:

1. Take steel beam and mount it on the opening, in its upper part, under which a small niche is cut out.
2. Fill the voids with cement mortar.
3. Then install the channel.
4. Then the vertical part of the opening is strengthened.

You can simply weld a special frame to the size of the opening and install it as reinforcement.
An option for strengthening the opening with a special frame Expanding doorways is a job that cannot be done without dust and dirt, so before you start you need to cover all the furniture and household items well. In addition, you should take care of your own safety - wear gloves, protective mask and glasses. Important! Before you start enlarging the doorway, weigh and measure everything well. Do not also forget that between the door frame and the wall there must be at least 3-5 cm of free space, which is filled with polyurethane foam during installation.