What should be the threshold of the front door? How to make a threshold at the front door? How to make a door threshold with your own hands

This element of the door block, which many people forget, performs not only a decorative function. Its main role is to increase the level of sound insulation, reduce heat loss and prevent dust from entering from the street. Therefore, to the question of self-arrangement of the threshold in the opening at the entrance to a private house or apartment should be approached consciously and rationally.

general information

There are enough options for making the nut. But acceptance optimal solution depends on the result of the analysis of many factors. Since it is necessary to arrange a threshold at front door, the choice is not so great. What should you pay attention to?

Material. In terms of durability, minimum abrasion, only metal is suitable ( the best option) or a tree. It is these doors that are installed at the entrance to the dwelling, and therefore a rational combination of the threshold with the frame will be ensured.

threshold height. Standard indicators - 25 ± 5 mm. This provides ease of movement for households. But here, too, there are nuances that dictate the need to deviate from the recommended values.

Flooring. If the entrance hall, for example, is covered with a thick carpet (which is not uncommon in private homes), then when determining a sufficient height, an appropriate amendment must be made.
Width. The threshold for the front door must correspond to the foot of a person (size 43 is taken as an average).
metal thickness. Door leafs, as a rule, are equipped with crossbars. If the steel threshold is mounted independently, this must be taken into account.
Entry design. If not a staircase, then at least a couple of steps usually leads to the door of a private building. For convenience, it is advisable to mount a small platform in front of the opening. It will also be needed if the height of the threshold (standard) of the front door is specially increased. For example, to level the significant difference between the last step (or porch decking) and the flooring in the hallway.

Installation procedure

If a new door threshold is installed to replace the worn one, then the defective opening element is dismantled; work zone must be thoroughly cleaned.

The interval between the racks of the frame is measured and the specifics of fastening the threshold to it are determined. For example, for wood, you will have to take into account amendments for the arrangement of the tenon-groove connection. Based on the measurement, the workpiece length is calculated.

Base horizontal control. The threshold should lie strictly parallel to the top of the door block. Otherwise, when opening / closing the sash, problems will arise. Leveling the surface is easy to do with the arrangement of the screed. Wedges will also help to raise the edge of the nut if it is wooden. Regardless of the technique, in the end it should take a horizontal position.

Aperture marking. The recommendation on how to make the threshold of the front door in the apartment is unequivocal - fix it on concrete floor using anchor bolts or self-tapping screws with dowels. In a private house made of wood, fastening can also be done with nails. The optimal distance between the hardware is 100 mm.

Setting the threshold, aligning its position relative to the horizon and fastening in place. The gaps between it and the floor are sealed (mortar or sealant, depending on the materials of the opening element and the base).

Surface finish. Finishing a threshold made of wood consists in installing a covering metal frame. You can take a piece of channel of the appropriate width; sheet iron with which the bar is upholstered. In terms of decoration, painting steel is easy. But given the increased abrasion of this part of the opening, it is advisable to use stainless steel. As is known, White color belongs to the category of neutral ones, and therefore such a threshold finish for the door at the entrance will suit any block structure.

If during the installation process a site was equipped, then it is also subject to registration. Applied to concrete base tile at the front door will be most welcome. The assortment of this product is large, and it is not difficult to choose its acceptable shade and texture.

A threshold for a private house can also be built from brick, concrete; strength and durability will be ensured. But in any case, you will have to work with the solution, import materials (for the same formwork). A simpler solution is to buy a ready-made threshold; in furniture stores they are sold in various modifications. But the installation of such an attractive design as a guillotine on the front door is impractical. It is installed in prefabricated canvases, with the help of special tools, and independently, given the complexity, this work cannot be competently performed.

For a private house, the technology described is, in most cases, quite enough. There is a choice of materials and technical solutions. And most importantly, they can be implemented independently.

Element door frame, a functional design that is designed to hide the junction between different floor coverings and differences between uneven floor levels, as well as to improve the interior, is called an interior threshold. This part is usually installed near the front door to an apartment or house, between rooms, at the entrance to the kitchen, bathroom, in the corridor. Some owners put anti-slip profiles on the steps of the stairs. The article will discuss how to install interior thresholds.

Interior thresholds are an interior detail that is most susceptible to stress and mechanical stress, since it protrudes several millimeters above the rest of the floor covering. Therefore, the choice must be taken responsibly.

Advantages and disadvantages of interior thresholds

Advantages of interior thresholds.

A massive wooden door absorbs noise, the threshold also copes with this task. To achieve a greater effect, you need to choose a threshold box that is equipped with rubber seal.
Protection against penetration of dust and drafts into the room.
With a small flood in the bathroom, the threshold creates an obstacle for the overflow of water; with a significant flood, this design will be useless. So that after the flood the threshold does not become unusable, a stone structure should be used. To prevent the occurrence of high humidity in the bathroom, you can opt for a box without a seal.
When cooking, the threshold will protect other rooms from the penetration of burning and smoke from the kitchen.

Threshold disadvantages.

Classic thresholds protrude above the floor surface and often cause falls, especially for children who forget to step over them.

Some floor coverings, such as, for example, laminate or linoleum, look more harmonious without any thresholds in the opening.

Materials for the manufacture of interior thresholds

Before you get down to work on installing the structure, you need to decide on the choice of material from which the sills will be made. The choice is huge.

Metal interior thresholds. Metal is the most commonly used material for making interior thresholds. They can be brass, aluminum, steel, bronze and even stainless steel. Each material has its own distinctive features, but they can all be used outdoors as they are weather resistant. These metals are difficult to oxidize, which means they will not rust and collapse underfoot.

Steel. Thresholds made of this material are quite durable and resistant to any kind of mechanical stress; there are painted or anodized elements on sale.
Stainless steel. Products are rarely used for installation on the floor surface, they are more often used for wall and furniture decoration, because they have a silver color and a glossy or matte finish.
Bronze. This is an expensive material, the sills from which are made only for individual orders, they are not on free sale. Aluminum thresholds are made "in bronze", they are available for everyone.
Brass. Durable thresholds of golden color are made from this expensive and rather valuable material.
Aluminum. From an alloy of various metals, in which aluminum predominates, reliable and lightweight products are made. They have an unlimited service life and an affordable price.

To give color to metal thresholds, they are usually coated with paint, laminated or anodized. The profile of steel and aluminum is coated with a plain paint or imitation of wood is made. Besides, aluminum profile laminated, that is, covered with a durable film that copies the appearance of stone, wood and other natural materials. Anodized thresholds come in three colors: silver, gold and bronze. The painting procedure is carried out by passing current through water, in which particles of the coloring matter are diluted and the product itself is located.

Wooden interior thresholds. This is the most common option. It is recommended to use oak. Since it is the most durable and wear-resistant type of wood. Oak thresholds are suitable for any type of flooring, but they are quite expensive, require systematic maintenance in the form of painting or varnishing, and are short-lived.

Plastic interior thresholds. Plastic products are an average option in terms of durability between metal and wood, they are attracted by a neat appearance, a variety of colors and an affordable cost. But over time, they require replacement, as they can burst as a result of intense mechanical stress.
Interroom thresholds from a laminate. Most often they are used in combination with a similar material covering the floor surface. It is able to gradually deform in conditions of high humidity.
Concrete interior thresholds. This non-shrinking material is used to make a threshold when exiting a balcony or from a house. Added to concrete various substances which make it flexible and durable.

Types of interior thresholds

Flat or overlay thresholds are metal or plastic plate, which can have a variety of shapes, it closes the gap between different types flooring (tiles and linoleum, carpet and laminate). It is attached from above, which is why the plate is called the consignment note.
Multi-level or transition thresholds are designed to hide the transition from one floor covering to another if they are located at different heights (from 3 to 15 mm). Most often, such elements have a rounded shape or a developed angle configuration.
Corner thresholds, among which the most reliable is aluminum, trim the outer corners of the steps. The sills come in a variety of lengths, widths and colors, making it easy to choose the right option. Most often, they have a perforated surface, which provides better grip with shoes and does not allow a person to slip on the steps.

Flexible thresholds are made from hypoallergenic and safe plastic, which, under the influence high temperatures becomes elastic, and after cooling it hardens, acquiring the desired configuration. This material is quite strong and resistant to mechanical stress, has moisture-proof qualities. Such thresholds cover the joints and mask the differences in flooring. They are used to bend around columns, pedestals and podiums, to decorate niches in walls and arches, to protect the most vulnerable places from moisture.
T-shaped universal thresholds have different widths, colors, good flexibility, which will allow you to create radius transitions between coatings, and concealed installation profiles, they are completely smooth and almost imperceptible underfoot.
Open fasteners are most often made of metal, less often of plastic. They suggest the presence of holes for attaching the profile to the floor surface, which are drilled every 15 cm and have a cone shape so that the screw heads do not protrude above the smooth surface of the threshold and do not cause discomfort to the legs. Even a beginner in repair can handle the installation.
Thresholds with hidden fastening are plates or corners without holes for screws, their fastening system is hidden under the threshold itself, it independently adjusts to a possible difference if it does not exceed 15 mm.

The latest notion is the anti-threshold, guillotine or "smart threshold", which is an aluminum profile in the shape of the letter P with a spring device and a rubber seal inserted into the end of the door block from below in such a way that it is not visible when open door. At this time, he is drowned inside the canvas. When the door is opened, the guillotine automatically falls silently down and closes the gap between the floor and the door. This design provides sound and heat insulation, lack of drafts, self-leveling on uneven floors. In addition, the threshold does not interfere with free movement around the room, its design is safe and convenient to use and install, affordable, and can be used in combination with any doors. The guillotine is not suitable for hollow doors, since it needs to be cut to a depth of at least 20 mm, and additional carpentry for installation is perhaps the only drawback.

Dismantling floor thresholds

Before laying a new coating on the floor surface and hiding its joints under the threshold, you should disassemble the old thresholds.
For this procedure, you will need to use a crowbar, hammer and hacksaw. First of all, you need to saw off the edges of the threshold and knock out its middle. The work must be done very carefully, otherwise there is a risk of damaging the door leaf - it may squint.
The remains of the old threshold are loosened by bringing a crowbar under them. If necessary, scrap is driven deeper with a hammer. Loose pieces of the nut are easily removed from under the door frame.

Do-it-yourself installation of interior thresholds

There are several ways to fasten interior thresholds. But they all start with an accurate measurement of the length of the joint that needs to be covered. After that, the resulting value is marked on the nut and the excess is cut off with a grinder or a hacksaw.

Installation of thresholds with open fastening quite simple to implement. For this, profiles with existing holes drilled at the same distance are used. It is necessary to attach the threshold to the floor and mark the places where the screws will be inserted. Drill on markup required size holes, attach the threshold and fix it with screws. It is important not to make holes too large, otherwise the screws will loosen over time and fall out. If the gap between the coatings is wide, it is closed with a suitable threshold. Self-tapping screws with decorative caps will not stand out too much against the background of the profile.

In the event that the joint of two floor coverings is at different levels (from 3 mm to 2 cm), you can use a wide threshold, which is attached at an angle, or a transitional (multi-level) profile.

For aesthetic reasons, consumers are much more likely to choose interior thresholds with a hidden fixing system. These can be strips with internal floating holes for self-tapping screws or a special profile, which consists of two parts: a T-shaped nut and a rail.

To attach the plank, you must first drill holes in the floor according to the markings and insert plastic dowels into them. Self-tapping screws for hats are carefully threaded into holes on the bar, after which it is turned over so that the fasteners fall into the dowels. You need to press a little on the bar and fix it by lightly tapping it through a layer of paper with a hammer.
To fix the T-shaped nut, the required number of holes are also drilled in the floor, into which dowels are inserted, after which the bar is attached to the floor with self-tapping screws, and the upper decorative profile is glued or snapped on top.

Greater attention must be paid to installation thresholds in the bathroom, since most often the floor in this room is tiled. On sale there are special sills for such finishing material, they do not allow moisture to penetrate into neighboring rooms. Also a great option would be to use a guillotine threshold.
to install interior door threshold on concrete floor, you will need a puncher to drill holes for the dowels. First, markings are also applied to the floor, after which the final installation of the threshold is performed by tightening with self-tapping screws.

Installing the threshold of an interior door video

In addition to aesthetic, decorative interior sills also carry a functional load. The installation of interior thresholds not only gives the floor a finished look, but also prevents the accumulation of dirt and moisture in the butt between the coatings, and also protects the edges of linoleum and carpet from bending and fraying.

A very important detail for the front door is the threshold. This element of the house is very often simply forgotten and such a design is considered not very important. This opinion is deeply mistaken. It performs quite a few functions:

The door threshold protects the room from dust, noise and cold air.

improved thermal insulation;
less noise from the street enters the house;
protects from dust;
decorates the house, it is a decorative element.

This detail of houses helps out when there is a strong difference in floor level. In this case, it begins to perform a kind of decorative function, hides such a flaw. The question arises, the front door without using the services of professionals?

Thanks to the threshold, the front door tightly adjoins and seals the doorway, helping to prevent a possible break-in. In addition, with the help of it is kept in door block metal front door.

The threshold should decorate the exterior of the house. Therefore, in order to make a threshold, it is necessary to choose the right material. This depends on the period of its operation. When the master begins to do it, he must necessarily take into account the security element. It should not be made too high. High altitude will be a source of inconvenience for visitors to the house. Basically, the height of the threshold should not be very large, but not very small either. Her wrong selection will cause a lack of protection at home due to the formation of a gap between the door and the threshold. She will help thieves get into the house. In addition, the gap will become a source of violation of the existing thermal insulation. To give elegance, you can make it in the form of a continuation of the steps of the entrance staircase.

Threshold production: nuances

For the manufacture it is necessary to select the material. Most often used:

brick;
wood;
cement mortar.

After selection required material begin to create its form. The most functional is the threshold, which looks like a staircase. Today there are many known different ways production of an entrance door threshold. The optimal option depends on the material used. It must always be remembered that this element of houses, in addition to functional features fulfills the tasks of decorating the design. You need to make the threshold in such a way that the steps become one with the beginning of the floor.

Before you start filling in the bumps that form during the installation of the front door, you need to preparatory work. Use a vacuum cleaner to remove dust and remove accumulated debris. The cleaned surface must be carefully examined to detect delaminations and various cracks. Existing defects must be cleaned, very large cracks must be covered up cement mortar. All loose pieces must be removed.

The surface of the made threshold must be covered with sealant.

This is necessary because it is very strongly influenced by natural conditions. It should be taken into account that its function includes the delay of dirt, which can be brought into the house by the guests who have come and the owners themselves. Therefore, it is desirable to cover the resulting gaps that occur constantly with sealants.

Features of the construction of concrete

To form a concrete threshold, you must have special tools:

formwork;
concrete mortar;
construction plumb line;
putty knife;
primer paint;
perforator;
paving slabs.

To obtain a more reliable adhesion of concrete to the screed, the surface must be treated with a primer. For a small step, you need to make a wooden formwork in accordance with its dimensions. The composition for pouring is done in strict observance of the instructions.

There should not be a lot of water in the solution, otherwise the strength of the screed will deteriorate, bumps will form on it. In order for the composition to be more elastic, special additives are added to it. It must be stirred until a thick dough is obtained, and the formation of lumps is unacceptable. For such work, special nozzles on the perforator are used.

The prepared solution must be used within two hours, otherwise in the future it will lose all its positive traits. Bubbles that will form during pouring are pierced with a knitting needle. Over the next 10 days, the screed must be moistened with water. This is done so that the concrete becomes stronger as it dries. To give the threshold a beautiful appearance and increased wear resistance, it is laid out on the outside paving slabs. The upper surface of the threshold is tiled with a special adhesive. All seams are closed with putty.

For the manufacture of a wooden threshold, birch or oak boards are most often used. They are pre-coated with moisture-proof compounds. The fact is that during operation it can begin to swell greatly, the front door will no longer close tightly.

The use of the wooden version

To make a threshold out of wood, you will need to have the following types of tools and materials:

boards;
saw;
ordinary nails;
hammer;
construction plumb line;
Bulgarian;
grinding machine for wooden surfaces;
vacuum cleaner;

When forming a threshold from wood, it is necessary to follow a certain sequence:

The vacuum cleaner removes dust and dirt.
The base is being prepared for installation.
Boards are sawn off in accordance with its dimensions. This dimension is best made a little longer than the width of the clearance that the racks of the box form. For more reliable fastening, it is necessary to cut corners at the bottom of the racks so that their height is equal to the width of the threshold. Then they are inserted into the prepared grooves.
Grooves are cut to the size of the height of the threshold.
Marking is in progress. Tags are inserted in 10 cm increments.
Holes are drilled in the base for nails.
Using the building level, horizontalness is checked.
The threshold is attached to the floor with screws, you can use nails.
The product is varnished.

The final finishing is carried out depending on the individual taste of the owner. It can be painted with paint to match the color of the door. For creating spectacular design you can finish the threshold with linoleum or glue it with tiles. Sometimes a plinth is installed.

In conclusion, it must be said that the door threshold is a functional design. Therefore, it must be made durable and beautiful. Before installing it, you need to take care of it appearance, convenience and practical properties.

The threshold is the final element in the formation of the entrance to the room. A large number of options not only for entrance, but also for interior thresholds, implies their different design and installation. In order to correctly select and install the required threshold for doors, you need to study the types of these structures, the materials for their manufacture and the installation technique.

What is it needed for?

Any thresholds are designed to perform the following functions:

Separating - the threshold of the front door is designed to separate the room from the street;
Protective - prevents the ingress of dust, dirt from the street or another room;
Noise-absorbing - contributes to soundproofing in the room. For this, products with rubber inserts are actively used, which will ensure tightness in the best possible way;
Decorative - beautiful and original thresholds with a door will create a unique set;
Protective - provide additional protection for doors from breaking. For example, there are threshold designs in which a special system of locks is mounted;
Retaining - thresholds can hold flooring(linoleum, laminate);
Decorating - some models are installed in such a way as to hide flaws or defects in the floor;
Heat-saving - all thresholds keep heat in the house or apartment.

Types and device

Thresholds are of the following types:

Input- installed at the entrance to the house (apartment, building);
Interroom- mounted in the opening in the bathroom or shower room. Many do not understand why a threshold is needed inside the apartment at the entrance to the bathroom. Everything is very simple: if there is a breakthrough of water in this room, it will become a boundary that will not let the flow into the rest of the apartment. Some install this limiter in order to isolate the entire apartment from excess moisture coming from the bathroom. In addition, no one forbids installing a threshold in the hallway or near the doorway in the kitchen;
To the balcony- is a necessary element, as it retains heat in the apartment and prevents dust from entering inside. In this case, from the outside, the threshold should be, first of all, functional, and from the inside - beautiful and matching in design with the overall design of the room.

Among the types of this design, there are models with an interesting and unusual name - guillotines. They are attached to the end of the door. When the door closes, they move down and completely tear the gap between the floor and the door.

Some doors are already sold complete with a threshold. Which is very convenient, since you do not need to waste time searching for the required instance. In the absence of such an element at the door in finished form, it can be purchased separately and installed independently.

The assortment of building stores is quite diverse. Finding the right product is not difficult. On sale you can see thresholds from both inexpensive materials and quite expensive specimens. Thresholds are made from the following materials:

Wood is an inexpensive option. There are both interior and entrance wooden thresholds. Its quality depends on the type of wood. Oak, pine, hornbeam are considered the strongest and most wear-resistant. feature wooden models is the need for careful care and annual staining. Plus - the tree is easier to mount.

Metal is a durable material. Powders from it are represented by a variety of shapes and types. They are exceptionally durable. The same feature is possessed by products made of steel and brass. An aluminum threshold is used to fix the floor covering.

Plastic is a rather brittle material.. Plastic thresholds are subject to deformation during prolonged exposure to the sun. This type products are best used in conjunction with a plastic door.

stone, concrete are used mainly for mounting at the entrance from the street and on the balcony. It is not recommended to install such products inside the room due to the weight of the structure itself and its volume. This type of threshold can be easily finished with laminate and other decorative elements.

Cork- it is used when it is necessary to hide the difference between the floor level in different rooms. This material is very flexible and plastic, compared to other options presented.

Installation Features

It is not necessary to contact specialist craftsmen in order to make the threshold in the room. Installation can be done by yourself, but be sure to remember that standard height of this product is 30 mm. There is only a slight deviation from the norm up or down.

In order to start work, you need to make sure that the surface of the future threshold is flat and dry. If this is not the case, it is necessary to correct the defects so that subsequently the finished product does not warp or deform.

Entrance options are best made from the most durable materials. Using brick and concrete, you can make a threshold for the front door. Since concrete is a liquid substance, it is necessary to make a formwork for it (from old or unnecessary boards), which will subsequently be cemented with the composition. With this approach, it will not stand out from the general view of the opening of the room.

When installing a threshold made of wood, the work algorithm is somewhat different.

The procedure for mounting it is as follows:

The length and width of the structure is measured;
Materials for the threshold are being prepared (they are sawn into pieces);
Grooves are cut in the boards (the height of the boards should correspond to the height of the future step);
The distance through which the nails will be driven in is calculated (usually it is 10 cm);
The level of the surface is checked using the building level. It must be even;
The threshold is fixed on nails (screws);
Held final finishing threshold.

When constructing the threshold in front of the balcony door, the same materials are used as for the front door. The work is carried out in the same way.

When installing the threshold, the length of the foot of an adult is taken into account so that it is convenient to use the step and the leg fits completely on it. In some cases, the design of thresholds begins with the fact that the threshold is first finished in the room, and then the rest of the step is mounted from the outside.

decorative design

Many owners are thinking about how to finish the threshold upon completion of the mount. If it was made of wood, then it is logical to carry out work on coating the product with varnish, paint or a special solution to protect it from moisture and dirt.

brick or concrete products It is best to decorate with tiles, laminate. One of the cheapest ways to date is linoleum trim. It's inexpensive, but not very durable either.

How the threshold of an apartment or room will be finished depends on the preferences and fantasies of the owners of the house. In any case, it is necessary to carry out work on mounting the product with high quality. After all, such things are mastered not for one year.

A properly installed and finished threshold will not only protect the room from the cold, but also give a complete look to the entire room.

When deciding on the design of the threshold, be sure to take into account the size and material from which the box and the passage door are made. The threshold will fully fulfill its functions when the following indicators are taken into account when designing it:

floor level. This indicator is taken into account in the first place, since the very height of the nut depends on it. Too high will prevent free movement around the room, as well as too low. A standard step should not exceed 3 cm in front of the front door. In a private house, it can be higher.
Material. Its choice will depend on the expected degree of load and frequency of use of the product. If this is the input threshold, then it is better to choose metal. For interior doors from pvc is better just wood or plastic will do. To enter the balcony, they purchase tiles, metal and wood.
No gaps between all components of the doorway - the threshold must clearly match the size and shape of the opening. The ideal solution to this problem would be to purchase a threshold along with a door.

The front door should not only reliably protect the home from unwanted penetration, but also fit neatly into the surrounding interior. A weak point in the installation of a metal front door, which you need to think about even before installing it, can be the bottom of the door, namely its threshold.

Why is it important to consider the threshold of the front door in advance

Let's look at a good, standard front door. I will not describe it in detail, you can see it here: http://dveriguardian.ru, on the manufacturer's website. Let me remind you that the design of the front door is massive metal box with a thickness in the wide part of the porch of about 60 mm. This height will be the estimated height of the front door threshold, which can increase and decrease depending on the type of house and installation method.

Relationship between threshold and floor level

As a rule, the front door is installed before the repair begins in the first place. And that can be a problem. I'll explain why.

The threshold of the front door, or rather, its upper level, will determine the upper level of the finished floor. If you put the front door before the repair and, as a result, before measuring the floor level, it may turn out that the threshold will be below the floor level after the floors are leveled.

Therefore, at the time of installing the front door, you should know the top level of the finished floor in the apartment. By telling it to the front door installers, you will protect yourself from problems with the floor level.

Houses with different floor levels

There are houses in which the level of the floor on the site does not match the level of the subfloor in the apartment. In such a situation, you find yourself in a different situation. The front door opens, according to the rules, outward. This means that the width of the front door frame will be less outside the apartment, this is how the door porch is arranged.

If the floor on the site is lower than the floor level in the apartment, then it turns out that during installation the door will have to be raised, which will increase the already planned threshold inside the apartment.

I want to note that all these nuances with levels and thresholds are of little concern to installers (although not all) and problems with floor levels emerge much later after installing the front door. We must be ready for them.

Remembering all of the above, most often from the side of the apartment (hallway), a threshold is obtained. The highest class of finishers will be a preliminary calculation of all the nuances of the repair, which will bring this threshold closer to zero level. This is what you should strive for. If the threshold turned out, you can draw the threshold as follows:

The height of the threshold is close to the width of the plinth. We close the box of the front door with a plinth.
The door is raised, and the threshold is high. You can trim the threshold with floor tiles. This technique is especially relevant if the floor in the hallway was tiled.
Rarely, but there is a situation of a very high threshold. In this case, a variant of the additional board is considered, which is usually used to add the thickness of the opening. The additional board can be replaced by any wide decorative panel that matches the design of the hallway furniture.