The purpose of the rebate in the door structure is to ensure the tightest possible fit of the leaf to the frame framing the doorway. What is a porch? Structurally, the vestibule is a small plank that is fixed to the main canvas and is, as it were, a continuation of it. When the door is closed, this bar moves close to the frame. In this way, a tight fit of the canvas is achieved along the entire contour of the box. Due to the fact that the thickness of the vestibule is equal to ¼ of the thickness of the canvas, such an element is also called a “quarter”.
Differences between doors with and without rebate
If, when closing, there are gaps between the sash and the door frame, then the narthex hides these gaps. It fits tightly on the surface of the box and is adjacent to the platbands. Present on interior, entrance, and especially fire blocks.
Unlike a regular door leaf, a door with a rebate can only be hinged (single or double). Coupe and sliding structures cannot be made with an additional rail. This will make them difficult to operate.
You can install an additional strip on the door leaf yourself. This is done using glue, liquid or metal nails. When installing a rebate on a double swing door, one strip is attached to the lift-off sash so that it extends beyond its edge. The rail installed on the back of the non-working sheet acts as a box, and together they cover the gap between the two sheets.
Advantages
Thanks to the advantages inherent in interior doors with a rebate and allowing them to harmoniously combine with any interior, the percentage of sales of such systems on the Russian market is steadily growing from year to year. Let us list the main advantages of doors that include a vestibule:
- Excellent thermal insulation and sound insulation characteristics . The presence in the design of such an element as a vestibule can significantly reduce the volume of flows of cold air penetrating from the corridor into the living space, as well as significantly reduce the penetration of extraneous noise into it.
- Additional protection against the spread of odors . Doors with a rebate are ideal for installation in the kitchen: with them, the smells of cooked food will remain in the room, and will not spread throughout the apartment.
- Attractive appearance . To verify the validity of this statement, just look at the numerous photos of interior doors with a vestibule, presented in abundance in this article.
Functions of the vestibule
Having figured out what it is - a door strip, you can find out why it is needed and for what purpose it is installed on entrance and interior blocks. In addition to its insulating functions, this structural element helps to hide shortcomings that arose during installation:
- mechanical damage to the surface of the door frame received during installation or transportation;
- gaps that may differ from different sides due to misalignment between structural parts.
What is a narthex
The vestibule is a metal protrusion located on the entrance door block. It is often installed on fire door structures. If we talk about its purpose, the main thing is to increase the burglary resistance of the product and increase its thermal insulation characteristics. Also, the use of this element as part of the design of door blocks is ensured by its high soundproofing characteristics .
When the door is closed, it is impossible to get to the lock bolt. Moreover, this happens largely thanks to the vestibule. It does not allow the door to be pressed out and removed from its hinges. When the door is closed, the seal fits tightly to the door frame. This ensures that the apartment is protected from such phenomena as:
- unpleasant odors;
- drafts;
- cold air.
Types of vestibules
There are several designs of vestibules used in metal doors:
- single-level;
- two-level;
- three-level.
Advantages and disadvantages
For entrance panels, the presence of a vestibule is a significant advantage. The plank reliably covers the installation sites of awnings, crossbars and locks, so it is more difficult to open such models.
Advantages of installing planks in interior structures:
- Thanks to good sealing, an additional strip on the door will provide sound insulation. A seal fixed along the entire outer perimeter will provide additional noise absorption due to the absence of gaps. This is true for children's rooms, offices, bedrooms.
- Sealing in the vestibules allows you to retain heat and protects against drafts in cold, drafty rooms. A special porous rubber acts as such a seal.
- A quarter door installed in the kitchen will prevent foreign odors from spreading throughout the apartment.
Disadvantages of using shutter strips include:
- High price compared to similar models without additional rail. This is explained by the fact that the process of their production is technologically more complex, requires high costs, and installation requires certain skills.
- It is necessary to purchase and install special fittings (hinges), which differ from those used in conventional doors.
- When using a closer, it must be adjusted correctly. The closer to the moment of closing, the slower the blade should move.
The range of some factories includes hinged doors with a rebate. Unlike models with straight, even edges, such solutions are equipped with a rebate - a strip that protrudes above the canvas and, when closed, overlaps the box, eliminating the gap. The thickness of the element is equal to 1/4 of the total thickness of the product, which gave it another name - a quarter. Previously, many structures were equipped with a similar protrusion, but today it has been preserved mainly in the design of entrance blocks. However, there are situations when you cannot do without a small but useful detail when decorating the interior space of apartments and houses.
Why do you need a fold?
First of all, single hinged doors with a rebate perform an insulating function. They are installed in children's rooms, bedrooms, offices, where it is necessary to create the most calm and comfortable environment. Since the quarter is usually chosen in reliable, thick sashes made of natural wood, the desired effect can be achieved.
The model fully protects:
from extraneous sounds. It also delays noise in the room if we are talking, for example, about a music school or recording studio;
from drafts and cold air seeping through the cracks along the perimeter of the canvas;
from unpleasant odors, a mixture of which comes from the kitchen every time something is cooked;
from dust, insects, light and other undesirable phenomena.
Swing doors with a rebate also have other advantages. Among them, they note a solid appearance, in tune with the interiors of a classical style. In addition, a quarter can mask installation flaws if the gap is uneven. The protruding part is often combined with a layer of sealing, which facilitates comfortable and silent use of the product.
What are the disadvantages of the solution?
Despite the many useful features, the rebate is rarely used today in the structure of interior doors, and there are reasons for this. Among them:
visual heaviness. If the models in question look organic in traditional ensembles, then they do not suit ultra-fashionable apartments and offices. Currently, there is a tendency to abandon elements that can burden the block, and the presence of side protrusions does not coincide with it;
increased price associated with the complex production technology of a swing door with a rebate. The design requires special skill from the factory and a greater number of operations during manufacturing;
impossibility of installing conventional hinges. The product is equipped with special canopies, the axis of which is shifted beyond the bar.
Which sashes are equipped with a quarter?
An element designed to increase the insulation of the opening is present in a wide variety of blocks. They are made of natural wood, have a combined structure, combining glass and aluminum at the base. It is possible to buy a single swing door with a rebate or equip the opening with a wide double-leaf model. The products are visually impenetrable or equipped with translucent inserts, etc.
Features of the fittings used
When choosing doors with a rebate, special attention should be paid to the fittings, namely the hinges. Standard canopies will interfere with the tight fit of the protruding strip, so they are replaced with corner card or screw-in ones.
Card hinges have fastening plates curved at right angles, which are installed in the same way as regular straight hinges - on the side of the door leaf and frame. Screw-in awnings are secured with screw-in pins. One part is screwed directly into the box, the other is inserted into the canvas at an angle to touch the bar.
Screw-in hinges must be installed with care as they can cause the fabric to split. They are best used for hanging solid wood doors. Many manufacturers produce their models of entrance structures with loops of this type already installed on them.
Sometimes you can find ready-to-install door blocks with hidden hinges hidden in the end part. It is difficult to install such hinges yourself, since a router saw is used for this. Incorrect installation can cause the entire mechanism to jam.
Specifics of selection
When choosing such a product for an apartment or office, special attention should be paid to the following points:
- Availability of high-quality seal . A seal that is well secured along the contour of the box should not make loud sounds. The sound of “sticking” is considered normal, usually resulting from the formation of a small layer of dust and dirt on the seal (no wonder, since the model can sit in the showroom for more than one month). The problem can be solved by wiping the seal with a wet cloth or degreasing it. If the door makes a strong squeak when closing, then it is better to refuse to purchase this copy.
- No unevenness on the cover strip . Such a structural element as a strip must be made perfectly - without curvature, bevels and, especially, without defects, otherwise all the advantages of having a rebate on the door are reduced to almost nothing.
How to choose interior doors with a rebate?
The choice of interior doors depends on the preferences of the owners of the room. Designs with a false strip in the interior will emphasize the classic style of the room. This model is suitable for decorating a house in country style.
Interior decorators sometimes believe that the door frame will not fit into the art nouveau or high-tech style. But you can choose an entrance structure that suits any design direction. The use of various original materials helps with this.
If you purchase a door model with a hinged strip, then you should pay attention to the quality of the seal used. It is considered normal if, when opening, there is a dull sound, as if something is stuck. There should be no extraneous creaks. The plank must be perfectly flat, without chips, cracks, or distortions.
To choose a door that will meet all the wishes of the owners of an apartment or house and fit harmoniously into the interior, you should consider all the options existing on the market. The decision about whether it is worth purchasing a walk-through structure for dividing rooms with additional details in the form of door slats is best made after considering all their advantages and disadvantages, taking into account your financial capabilities and the size of the doorways.
The presence of vestibules is mandatory for entrance structures. They will give the entrance an aesthetic appearance and will become an insurmountable obstacle to various odors and drafts. By installing a door with a seal and a two- or three-level rebate, you can achieve complete sound insulation in an apartment or house. The plank will protect the room from entry by unauthorized persons, securely closing all crossbars and hinges.
Quarter doors. Myths about the benefits
It's no secret that today the choice of interior doors is huge. Yes, there was a time when people could live their whole lives with doors from a developer, carefully painting them every year in a standard (usually white) color. Modern youth do not even know that “getting” interior doors in Soviet times was a stroke of luck that did not “smile” on everyone. In conditions of severe shortages, consumers had minimal requirements for construction and design. Now everything has changed dramatically. The customer can afford to turn his nose up at the slightest discrepancy between the desired and the actual offer. There are many criteria for choosing doors, today we will focus on one of the technical features - doors with a quarter (synonymous terms: doors with a rebate, doors with a rebate).
A quarter on the door leaf is a design of the door in which the end of the door leaf is not flat, but has a “step”. More often, a similar solution is found in wooden doors. Many manufacturers of such products never tire of praising and listing the advantages of quarter doors. Manufacturers of interior doors with a flat end with no less enthusiasm refute the arguments of their competitors. Well, let's figure it out.
So, the first and main argument in support of rebated doors is their increased sound insulation. It is a myth. The degree of sound insulation is influenced by the presence of a high-quality seal in the door frame and a tight fit to the door leaf. It is quite clear that the gap between the door leaf and the floor also reduces the degree of sound insulation. And you need to remember that sound is vibration, which means that doors with glass inserts a priori worsen their soundproofing properties. And, naturally, the degree of sound insulation will be influenced by the thickness of the canvas and the material from which it is made. And let’s not forget that soundproofing a room involves not only doors, but also walls and windows. And if the buyer could compare the soundproofing properties of both products, then, rest assured, even the owner of very sensitive hearing would not notice the difference.
An equally important argument in defense of rebated doors is often the ability of the quarter to hide the unevenness of the gap between the leaf and the frame. Yes it's true. Indeed, some manufacturers use the quarter as a panacea for uneven perimeter gaps. But let's not lie. It’s the 21st century, and handicrafts have been replaced by new technologies and widespread computerization of production processes. The door, with or without a rebate, must be made with high quality, and its geometric dimensions completely coincide with the dimensions of the frame. The installation of the product should be no less high quality.
And a little about fashion. Doors are part of the interior. Rebated door leaves are traditionally considered a classic design option. Doors of more modern styles (high-tech, minimalism, loft, art deco, country, chalet, pop art, ethno style and a huge number of others), having a quarter, look slightly comical. If we focus on the trendsetters of door fashion, the Italians, then they extremely rarely offer doors with a rebate. On the contrary, doors that are in the same plane with the wall, the so-called “hidden” doors, are now at the height of fashion.
