Do-it-yourself installation of an interior door without unnecessary problems. Rules for installing interior doors What you need to install interior doors

Installation interior doors- a very important process in the repair of an apartment or a private house. It is quite simple and does not require special skills, but still it is worth recognizing that making doors strong, reliable and durable is a very important job that should be approached as responsibly as possible.

At what stage of the repair are the doors inserted in the apartment?

Of course, before you start installing interior doors, their owners have a lot of different questions: how to do it, which doors are better, how to make them more durable and reliable? Probably one of the most basic and very first - at what stage of the repair are the doors inserted in the apartment?

There are actually several options here:

The first option is best considered when it is planned to expand the doorway in the future. In this case, the process of installing the door should be done before fine finish rooms. This is done with the aim that during such an action as installing a door, a very a large number of dust, and it, like ceilings with walls, cannot remain clean.
The second option should be considered when the door already exactly fits the size of the doorway. In this case, it would be best to install the doors after the ceilings and walls are finished. Then new door will not be damaged during repair work.

And, finally, the last case, the third, - after wallpapering, as well as processing and washing ceilings, floors and walls. This will also help keep all furniture, doors and the room itself clean.

What is better to insert and from what material?

The second question that arises among the owners of apartments being renovated before installing doors concerns the material of manufacture and the very type of door. In fact, there is no single correct answer to this question, since something individual will suit each person and each apartment. But in this article we will try to weigh the pros and cons of each door option from each material.

The choice of such an item in an apartment or house as a door depends on several parameters:

The first is, of course, the price. It varies from each company, the quality of the material and the product itself. For example, the cheapest and affordable option is a door made of honeycomb material, which usually costs around a thousand rubles. The most expensive and "elite" option is a solid array and a door made from it, it costs about 20 thousand rubles, which is quite expensive. Of course, there are also intermediate price categories: for example, a leaf door costs in most cases 4,500 rubles, which is quite acceptable.
The second parameter follows from the first parameter - the material of the product. About honeycomb material, solid array and leafy canvas has already been mentioned above. The first one is the most low-quality because of its cheapness, the second one is of very high quality, reliable and durable, while the average quality is possessed by sheet (or type-setting) canvas, MDF, chipboard, and also glued wood. The middle price category also includes a door with metal and glass.

There are also doors classified by material, such as: glass, eco-veneer:

The choice of door also depends on its design and color. Natural, classic, very simple designs will cost less in price and fit into the vast majority of interior styles, but at the same time they will not have a special personality and will not become a decoration for a house or apartment. So it's a smart option to invest in a beautiful, distinctive door design, as it can make your home feel even more inviting and enjoyable. Do not forget that the combination of this product with the interior and style of the apartment is very important, and its incorrect selection can spoil the appearance of the house.
The next parameter is, of course, the design. Naturally, for the most part, the door has a classic, standard rectangular shape and an average thickness, but it, like the shape, may vary. It is necessary to focus on the width, height and other dimensions of the doorway, as well as, as in other cases, on the interior of the home. By design, there are also doors: double, sliding, sliding, double-leaf, hidden, hinged, folding, single-rail, on rollers, as well as telescopic and soundproof.

In the end, we come to the last but not least parameter: company manufacturer. A lot can also depend on it, since different companies offer a different assortment and quality, and also differ in price and sometimes very much. The best door manufacturing companies are Vladimir Door Factory, Verda, Alvero, Bravo and others.

What tools and materials will be needed?

Naturally, for such a process as installing an interior door, you will need a variety of special tools and materials. They must be purchased before this action. So, we will need:

hammer;
chisels (20 and 15-16 mm);
roulette;
level and scrap;
screwdriver and screwdriver;
a hacksaw designed for woodworking;
miter box;
perforator;

drill;
milling machine (milling cutter) and circular (if possible);
mounting kit;
installation accessories;
planks;
Miter saw;
vacuum cleaner (for cleaning the room).

As for the materials for installation, we will need:

door leaf;
door frame and fittings (it includes locks, hinges, handles);
mounting foam;
wedges;
nails, dowels and a few screws.

We take measurements

Step by step, we approached, directly, the work itself. And the first step on the way to the result will be measurements - a very important step.

So we need a few measurements. The first, as you might guess, is the width of the doorway: it determines the size of the door itself. If the doorway itself has yet to be built, it is imperative to take into account what size furniture will have to be carried through it in the future. An error in choosing the size can make it very difficult to repair and rearrange furniture in the future. although sometimes custom sizes are acceptable and possible.

Next is the next step. First you need to process the door block with a primer, before that, clean it with sandpaper. Before the next step, you should try on the future door in the opening to check its size, as well as the direction in which it opens. In addition, we will need a level: with its help, we will need to measure and check the level of verticality and horizontality and, by measuring the diagonals, make sure that all right angles in the structure are observed.

After all these installation measurements, you can proceed directly to the work itself.

We are preparing an opening

The preparation of the doorway is one of the most important stages in this work. The following details how to produce it carefully and correctly:

First, you should evaluate the door leaf. In other words, you must first remove from the hinges old door, if there is one, if not, then this stage, of course, is not required.
Everything needs to be removed door frames, but from those voids that were formed between the opening and door frame and filled insulating material, should be disposed of.
After all these actions, cuts are usually made in the places of the side parts of the door frame, while moving from top to bottom. The next step is the destruction of the lower, and then the upper elements of this very box. Then do the same with the upper and lower bars.

Among other things, the preparation of the opening includes fitting to the dimensions of the door itself, which is very important for its reliability. Enlarging the opening usually does not cause any particular difficulties, while expansion will require the use of devices such as a puncher and a grinder.
In the event that it is required to reduce our opening and quite significantly, a brick is required. With a slight decrease in size (up to about 50 mm), you just need to install a frame in it. It can be made from both metal and ordinary corner.
This structure then needs to be leveled, gaps filled in it, treated with a cement mortar, if necessary.
There may be such a problem that the opening during processing loses appearance. Then it should be leveled and plastered again. In any case, it is always worth checking the condition of the doorway, its evenness and other parameters very carefully.

How to assemble the product yourself?

When we purchase furniture from a building or furniture store, the purchase most often is not a design that is already completely ready for installation, but a set of many large elements that you need to work with later on your own. For beginners unprepared in this matter, at first the question often arises of how to assemble the product yourself?

The main problem with this work is this: the cuts and connections of the door components are often unusual and have a specific structure, which can greatly complicate the whole process. But even this problem has a solution.

This article presents the simplest possible scheme for assembling an interior door:

The first step should be placed on the floor (or on another necessarily flat surface) bar of the door frame, spreading it around the canvas.
Next, you should form a gap between the door and this very canvas, then you need cardboard from the packaging. After that, it is necessary to attach the blanks of the upper crossbar to the upper ends of the bars of the box, to measure the parameters of the lintel very accurately.
The next step is to create cuts. They are best done with a hacksaw that has fine teeth and specially designed for carving on metal surfaces.

At the next, already fourth stage, you need to attach the upper part of the structure to the bars, lay cardboard to form a gap. Next, we cut off the profile, if it prevents the connection of the elements, we screw the screws into the places for them.
Final stage- leave a gap (approximately 0.8-2 cm in size). By analogy, we create the necessary threshold.

How to put the loops right?

Installing hinges on interior doors milestone, which has many individual subtleties and nuances. Before this work, which includes such subtleties as tie-in, installation of overhead hinges (as well as non-separable, non-mortise and simple awnings) is also worth checking out. correct instruction installation of hinges so that the future design is reliable, serves the owner for a long time and faithfully.

This article describes one way to install hinges, it is called the artisanal method. It is medium in its complexity, while being very reliable and promising durability of the product, besides, it allows you to conveniently adjust the height of the hinges:

So, first you need to mark the groove. To do this, you need to attach a canopy to the end of the full (or box) and circle with simple pencil, there is no difficulty in this.
Second step: edging with a hammer and chisel. A border should be made along the entire groove, and very evenly and efficiently.

The last stage: sampling the groove with a chisel. This process requires utmost care and accuracy, because even a slight careless movement of the hand can spoil the appearance of the door surface. There are others alternative ways hinge installation. For example, a professional method that only professional workers can usually bring to life with their own hands, but the quality of this method is worth it.

As for what you can create with your own hands, there are several ways. Firstly, this is the installation of loops without tie-in. Secondly, non-standard, but very convenient trunnion loops. Thirdly, screw hinges, although they do not have the most aesthetic appearance.

Mounting options

Ease of use depends on many different nuances. One of them is the method of fixing the door and There are several such ways:

The first known option for fastening a door is the so-called frame system. Its essence is that the door is placed in a steel frame and it can be moved by installing a groove on the wheels.
The second option is a rail system, which differs from the first one in that instead of wheels or rollers, special rails are used here. They are very reliable and easy to use.

There are also other ways and options. These include the well-known installation on hinges, as well as such unusual ways, alternatively without self-tapping screws or also without anchors. There are a large number of options for fastening doors, and each person will be able to choose something to his taste.

Do-it-yourself installation: step by step instructions

Do-it-yourself door installation includes its own technology, scheme, installation procedure in accordance with GOST. It has its own standards and nuances that you need to know and follow, regardless of whether it is the installation of a box, a sheathing without additional elements or with them, and so on.

Box installation

So, this process has already been discussed in detail above. It is only worth mentioning that this type of repair installation work is one of the most important in the installation and installation of any door, because it can actually be considered the basis of the structure. It is very important to accurately make all the necessary measurements, perform work carefully and observe safety precautions.

Correct installation of the box is the key to a reliable, sturdy construction.

How to insert with extensions?

Dobors are called two vertical racks and 1 horizontal bar, the purpose of which is to increase the size of the so-called box coverage area. That is, they simply expand it.

Usually such products are made from solid wood, as well as from materials such as MDF and fiberboard.

The sequence of work is not very complicated, but such an operation can help in many cases, for example, to install awnings:

So, first of all, you need to use milling machine make a groove in the beam along the entire door frame, along its perimeter.
Next, fake slopes need to be attached with glue, and then strengthened this design using self-tapping screws.

The next step is to attach the false slopes to the beam, and put the panel at the top on the remaining vertical elements.
In the middle of the work, you need to match the already enlarged box, install it in the already made opening, for this we use self-tapping screws, as well as spacer wedges.
Finally, the wedges need to be placed around the perimeter of our door. The distance between the door frame and the door itself must be filled with special foam, cut off the excess. Ready!

Self-set threshold

There are two ways to install such a detail for a door as a threshold. The first is called open, the second, respectively, closed. The first method is quite simple, but still does not look very aesthetically pleasing:

In this method, first of all, a hole is drilled openly, in which fasteners are then fixed.
Then the threshold itself is laid, fixed at several points at once with the help of self-tapping screws.

Although the first method is many times faster, the result after the second one looks much prettier and more aesthetic:

First of all, we fasten the first part of the threshold to the floor with the help of several self-tapping screws.
The next step is the decoration, we insert the bottom bar into the resulting grooves.
Another option - a decorative bar is attached to ordinary glue. This completes the threshold setting.

How to align?

Correcting mistakes, such as unevenness in the design, is very important. After the assessment of irregularities is carried out, the door is removed and re-measured in all respects, you need to get straight to work:

If there are gaps between the floor and the door itself, first of all it is necessary to apply a level approximately 1.2-1.4 meters wide across the door opening. This will help level the surface.
Also, sometimes in this case, the alignment of the carpet, if present, can help.
At the end of the work, it is necessary to hang the door again and check its condition.

How to fill gaps?

The gaps between the door and the frame are a common problem that many owners of apartments and houses have to deal with. You can cope with it with the help of ordinary mounting foam, but it is better to choose a better and more expensive one in order to maintain the quality of the work performed longer.

There are also options such as the most common foam rubber and even moss! Another way: heaters sold in any hardware store.

Mounting nuances

Mounting the door, like any other repair work related to furniture, has many different nuances that you should definitely pay attention to the owners of the door:

For example, to install a door in a deep or very large opening, you need to either purchase additional extensions, or also install the second door structure. Also in this case, it is worth considering the option of buying and installing heavier doors.
In order to correctly, reliably and efficiently install the door at the corner of the room, you need to take into account that the box must be installed at a special required angle, you should also pay special attention to cutting the brick into the brick opening and fastening the structure of this very box, as this may cause some problems.
With different wall thicknesses, it is necessary either to make all measurements very accurately, or to align them before installing the door or mounting.

IN panel house When choosing materials and structures for the work itself, it is worth paying special attention to wall internal expanded clay concrete panels.
Equip the door in the opening bearing wall- the task is very difficult and in this process one should not forget these important points: the material used in the construction of a house or an apartment, the plan of the room and the apartment or the house as a whole, the condition of the floors, as well as the thickness and other parameters of the wall.

Installation in some cases is a very difficult type of work, but following these tips, you can handle everything perfectly and without much difficulty.

Finishing

Finishing is a very simple, practical and convenient way to decorate and transform an interior door or even the entire interior of an apartment, house or cottage. There are several main types of interior door finishing: installation of such a structure as slopes, decoration and installation of a door frame, or door leaf, installation of platbands and, finally, finishing with a laminate.

Finishing slopes is not the most difficult, but the dirtiest and most unpleasant type of design. It needs a primer different types putties (starting and finishing), corners, mesh for plasters. With the help of these tools, you need to putty and clean the door, its slopes.

Designs that can decorate and transform a door beyond recognition are a door frame, platbands, a door leaf. These options, as a rule, do not take much time and effort, but still require extreme accuracy, patience and compliance with special rules.

How to check if the installation is correct?

In order to check the correct installation of the door, you need to perform several simple, but at the same time very important actions for its further operation:

In no case should the door creak, the hinges should move easily and stand firmly, opening the door should not present any difficulties.
When opening the structure at an angle of any size, it should stand straight, not stagger, not deviate.
It is necessary to conduct a very careful external inspection of the door, check it in operation, carefully consider every detail of the structure.

Beautiful interiors

There are a lot of different interior options for interior doors. For example, a door in a white, light, neutral color is perfect for bright rooms or apartments with a minimalist design. Bright, for example, red doors will perfectly fit into non-standard interiors.

In any country house or an apartment, the question of replacing or installing interior doors may arise. A wide range of doors offered on the market allows you to choose a product according to your taste, design of the room and the state of your wallet. You can trust installers to install doors for a fee, or you can save money and install the door panels yourself.

Mounting the canvas is not an extremely difficult task, but requires some knowledge and skills. Before installing any structure, you need to know what it consists of. The door block consists of the following parts - a frame, a door leaf, fittings, platbands.

If the width of the wall is larger than the inserted door unit, then additional element, dobor.

The most common materials from which interior doors are made are MDF, laminated chipboard and tree. Exist various designs, but swing doors are more popular.

The order of assembly and installation of the door:

Assemble the door frame;
Fix the hinges on the door leaf and box beam;
Insert the door frame or block into the opening;
Install fittings (handle, latching mechanism);
Install platbands.

You can install the fittings yourself, but if there is no self-confidence, then in order not to spoil the doors, it is better to trust the professionals. The installation sequence may vary.

Proper installation of interior doors

To put interior doors from scratch, in addition to desires and skills, you will need some tools and fixtures. In addition, you will need mounting foam and a gun. To cope with the installation of a heavy structure, for moral and real support, an assistant is needed.

What tools are needed to perform the work:

Screwdriver or screwdriver;
Level;
Hacksaw, electric jigsaw or circular saw;
Chisel;
Drill;
Fasteners: self-tapping screws, finishing nails, anchors and others.

Door frame elements and architraves are often cut at an angle of 45ᵒ. To perform this operation accurately and accurately, a miter box is used. Before installing new interior doors, you need to check the condition of all elements, their coatings, and the availability of components. If defects are detected after the installation of the door block, then it will be almost impossible to prove something.

Instructions: how to install an interior door

Before installing an interior door, it’s a good idea to read the instructions with pictures and use some professional advice in your work. First of all, you need to assemble the door frame. It can consist of 4 parts or be U-shaped. It depends on the availability of flooring. The boxes are produced with universal dimensions for doors from 600 to 900 mm, so the elements of the box have to be cut. Doing the job requires care and attention.

Door frame assembly instructions:

Cut off long pieces. Take into account the size of the gap between the door leaf and the floor covering (for residential premises 10 mm) and the thickness of the floor covering.
Cut off the top piece. From the side of the door leaf, the size is equal to the width of the leaf itself plus 7 mm. Using a miter box, cut the elements at an angle of 45ᵒ.
If a threshold is provided, then the elements are sawn off perpendicularly from below. It is also possible to wash down the upper elements in 90ᵒ.
To connect elements, especially for MDF doors, it is necessary to drill holes at an angle of 45ᵒ using a drill with a diameter of 2.5 mm, separately in a long element, holes of 4.5 mm must be drilled. Connect the elements with screws.

Next, you should attach the door leaf to the assembled frame, observing the gap between the box and the door of 2.8 mm. To establish the gap, packing cardboard can be used. If the door is double-leaf, then the distance between the two halves must be at least 4 mm.

Only having determined the side and direction of opening the door, it is necessary to mark the place where the hinges are attached.

Usually they are placed at a distance of 20 cm, retreating from the top and bottom of the door leaf. The third loop is attached at intervals of 46 cm from the top. Hinges have their own characteristics that must be considered during installation. If necessary, a place for fastening the “flag” of the loop is prepared with a chisel. Depending on the design of the hinges, the methods of their fastening may be different.

Installation options for interior doors

The next step is to insert the door frame into the opening. Technology may vary. If the opening is too wide, you can reduce it by attaching a wooden beam to the wall with anchors from the hinge side.

You can insert a whole block, together with the canvas or a separate box, then spacers will be required. The size of the spacer must take into account the technological distance between the bottom of the door and the frame, 6 mm must be added to the width of the door leaf. If the frame is installed separately, after hanging the door, the gap must be checked. It must be the same everywhere. If necessary, adjustments are made.

The box is fixed in the opening with wedges. First, the upper wedges are clogged, and then, after checking the level of the box, the lower ones. The distance between the box and the wall is filled with foam. In order not to stain the surface, masking tape is used. When the foam dries, the wedges are removed and the protruding part of the foam is cut off.

Door frame mounting methods:

The box is fixed with 6-8 self-tapping screws of the required length through the through method (wooden spacers can be used).
For fastening, 3-4 points are used in the places where the fittings are inserted, which hides the screws.
Dowels, long bolts with nuts are used as fasteners, mounting strips are attached to the box. The whole process is regulated by level. In this case wedges are not used.

The stage of installing platbands is no less responsible than the previous ones and requires accuracy. To put the trim, you need to measure the length of the trim, cut the trim with a miter box at an angle of 45ᵒ, attach the trim with nails, having previously drilled holes 1/2 or 2/3 of the diameter of the nail in the attachment points.

Installation of fittings can be performed at different stages.

In some cases, all fittings crash after installing the door block. The door fittings include: 2 or 3 hinges, handles with latches and a locking mechanism. The location of the handle is determined individually, standard requirements 0.8-1.3 m from the floor.

We figure out how to install the door correctly

You need to install the door yourself in compliance with building codes. At correct installation there should be no distortion. The canvas should not open on its own if it is not held by a lock, or close. A correctly installed door with a slight push in the open state should close smoothly.

The quality of the door installation depends on the following reasons:

Correctly made measurements, according to which they are made door block. To perform measurements of room openings, it is better to invite a specialist.
Working conditions (temperature, humidity). It is desirable to install canvases at the end of all work and complete drying of the floor and walls.
All required clearances must be observed.
All structural details must be level, even if the walls are not even.

To keep interior doors in good condition, you need to use furniture care products, avoid exposure to aggressive substances. To process wooden door, mastic can be applied.

Proper installation of interior doors with your own hands (video)

Installing interior canvases with your own hands seems like a daunting task. But, if you do the work, observing all the necessary rules and regulations, this task is feasible. Approaching the matter with due diligence, you can save the budget and gain valuable work experience. The result will definitely justify all efforts. beautiful doors into the room will become an interior decoration.

Self-assembly and installation of door interior blocks does not require high qualifications or special skills from the performer. Consistent connection of parts in accordance with the instructions and accurate installation in doorway will allow you to get a satisfactory result even by the efforts of a beginner. You just need to stock up necessary tools and patience.

Ways to install interior doors

You can mount a door between rooms different ways. It all depends on what its design is and what material the door block is made of. A significant role in the choice of one or another installation method is played by its intended purpose. If this is, for example, a door to the living room, then special strength is not required. But if the door separates the walk-through corridor from the server room, in which high-sensitivity devices or units with voltages over 1000 volts are located, then in the interests of safety it is advisable to install a door of increased strength. Accordingly, the installation method in the second case must meet completely different requirements.

There are the following ways of fastening the door block in the opening.

Fixing the frame on the mounting foam. The easiest, but not the most reliable way to install. Suitable for lightweight MDF or MDF doors of small size.
Mounting foam, when dried, firmly glues the door frame to the wall opening
Installing the door frame on the brackets. As a rule, everything plastic doors(as well as windows) are mounted in this way. Metal plates are used as brackets, which are used for suspended ceilings. The thickness of the direct suspension is from 1 to 1.5 mm, so the mount is quite rigid. The main disadvantage of this method is the need to plaster the bracket attachment point. The method is applicable in the case when the finishing of the walls has not yet been done.
The ceiling hanger is used as a bracket for fixing the door frame
Concealed installation, i.e. fixing the door frame under the hinges in three places. The rest of the space is filled with foam. The result is a fairly strong and invisible to prying eyes mount. Frame suspension points are arranged in the following order:
- two - under the hinges;
- one - under the reciprocal lock bar.
through method. Installation is carried out using screws or anchors. Holes are drilled in the frame through which it is attached to the wall. Typically, two to four fixation points are used on each vertical rack and from one to two - on vertical bars. To prevent the holes from being visible, they are covered with plastic plugs from above. This fastening is considered the most durable and is used for heavy doors, including metal and armored ones.
With direct fixation, the frame is rigidly attached to the wall and can hold a heavy and powerful door.
Hinged door frame. A new method developed relatively recently. Its essence lies in the fact that the box is hung on special loops. Anchor fasteners are installed at the ends of the opening, and screwed onto the frame metal hinges. During installation, the loop is put on the head of the adjustable bolt. The method is good in cases where the doorway is uneven. Installation is very fast.
A set of simple fasteners allows you to install the door in minutes

In practice, several methods are often used simultaneously, as well as combining and combining fixation methods depending on the specific situation. In any case, mounting foam is almost always used today, it serves not only as fasteners, but also as a heat-insulating and sound-absorbing layer.

Video: quick door installation technology in 15 minutes

What you need to install an interior door

As with any other installation work, for the successful installation of interior doors, special tools and consumables are needed.

Required Tools

Getting Started self-assembly interior doors, you must arm yourself with the appropriate tool:

electric drill with a set of nozzles (for screws with different slots);
a set of drills for wood (the larger the range, the better);
A distinctive feature of a wood drill is a sharp tip
perforator (in the event that fastening is carried out on anchor devices);
electric or manual furniture saw ( perfect option- end circular saw);
With the help of a miter saw, workpieces for the door frame, platbands and additional elements are quickly and efficiently prepared
drill bits or drills for concrete (diameter 4 and 6 mm);
miter box, a set of chisels of different widths;
The miter box is designed for cutting parts at different angles.
measuring tool - hydraulic level, tape measure, square, etc.;
The accuracy of measurements during the assembly of interior doors is reflected in the quality of their further operation.
knife, pencil, marker.

You will also need consumables:

What cutters are needed to install interior doors

If there is an opportunity to buy or rent a router, you should definitely use it. By using manual router selection for hinges and locks is greatly accelerated. There is no need for chisels, the quality of the grooves improves. In order to optimize the process, it is desirable to use small diameter cutters. Thanks to this, you will have to cut less wood in the corners by hand. For example, for door hinges, a cutter with a diameter of 9.5 mm is ideal. To select the lock, a groove cutter of the appropriate length is used (to the depth of insertion of the locking device).

The main characteristics of a groove cutter include the height and diameter of its working part, as well as the size of the shank for clamping the router

The average installation time for one door for a professional carpenter is 2 hours. If the hinges and the lock are cut in manually without using a router, this time increases to 3 hours.

Box saw

A few words about electric saw. When installing one door, of course, it makes no sense to buy a "circular", especially an end one. You can use an ordinary hand saw with a small (furniture) tooth.

With a saw with fine, unset teeth, you can make even and clean cuts of parts.

But if a whole apartment is being built or reconstructed, in which from 5 to 15 doors are installed, you can at least think about renting a tool. The quality and speed of assembly using a miter saw increases several times. Much also depends on the type of doors and platbands. Some have to be customized the right dimensions, others require little to no cutting.

Preparing an opening for installing an interior door

The main task in preparing doorway consists in:

removal of excess materials from the end of the wall (remnants of mounting foam, plaster, broken bricks, etc.);
creating the correct geometric shape of the hole in the wall (a rectangle, not a trapezoid).

If the brickwork is in poor condition, it must be plastered with cement mortar.

In new buildings, doorways should theoretically have dimensions close to standard. However, in practice this does not always happen. In a house or apartment where reconstruction is taking place, old doors must be dismantled before installing new ones. If at the same time the opening was damaged, it must be restored - leveled and plastered.

The following geometric parameters of the opening affect the quality of the installation of the door block.

Height

The height is measured from the “clean floor”, that is, from the level of the finishing floor covering - laminate, tile, linoleum, etc. It is necessary that the height be the same over the entire plane. A similar requirement applies to the floor - it should not have bumps and pits, especially if the installed door does not contain a threshold in its design - all defects will remain visible. The height of the opening should be 6-7 cm more than the vertical size of the door itself.

The dimensions of the doorway must take into account the technological tolerances for the installation of the frame and the necessary mounting clearances

Width

Similar requirements are imposed on the width of the opening - it must be the same over the entire height of the door. Vertical planes should be at right angles to the floor and be parallel. If this is not the case, the sidewalls must be leveled. The width of the doorway is determined based on the width of the door leaf - 10 cm are added to it (5 cm on each side).

Thickness (or depth) of the opening

An important condition that must be observed when preparing the opening is that the end should have a rectangular shape. In the lower part, at the intersection with the floor, a right angle (90 °) should form. If the thickness of the walls is not the same, gaps will form under the platbands, which, in fact, is a marriage.

Video: preparing a doorway before installing an interior door

Do-it-yourself interior door installation: step by step instructions

Since the vast majority of doors in the surrounding life have a hinged design, we will consider the installation procedure using the example of a typical interior door.

The most common type of interior doors has swing mechanism opening

Rules and procedure for installing interior doors

Installation of a swing interior door is carried out in the following order.

Development of a scheme for fastening the door frame in the opening. At this stage, it is necessary to clearly imagine (or better, sketch) the method of attachment. In our case, this will be fixing with self-tapping screws and polyurethane foam. It is also necessary to decide on the side in which the door will open. If there is no pre-planned plan, the following hint will help solve the problem: in small rooms, such as a toilet, pantry and bath, it is customary to open the door inside. Exit to the corridors large rooms better to do outside.
The most common way to fix the frame in the doorway is to install it using anchoring on mounting foam.
Door frame installation. It is advisable to place the door that arrived from the store on a flat horizontal surface - a table, chairs or on the floor and unpack it. Assembly is carried out using self-tapping wood screws with a thickness of 3.5 mm. Before screwing the self-tapping screw, it is necessary to drill a hole that will not allow the wood blank (Fibreboard, MDF, Chipboard) to split. A drill with a smaller diameter is used, in particular 3 mm. For the same reasons, it is not necessary to screw the screws close to the edge of the parts - the standard distance is at least 5 diameters, i.e. 1.5 cm. For reliable fastening of the horizontal strips of the door frame, four screws are enough - two on each side.
When assembling the frame on the floor, put cardboard from the package under the box
Cutting racks. Usually the door frame is sold with a height margin of 5–7 cm. After fixing the side parts, it is necessary to measure the exact size and cut off the excess. To do this, the height of the opening is measured and transferred to the frame. At the same time, it should be borne in mind that a technological gap of 2–2.5 cm should remain between the box and the wall. Such a backlash is needed so that the frame can be aligned horizontally and vertically inside the opening.
Adjustment of the length of the side posts is carried out after measuring the height of the opening
Installation of the frame in the doorway. If up to this point the door leaf was inside the box, then to install the frame into the wall, the sash must be removed. The frame is installed in the allotted place and leveled with a level. Primary fixation is carried out with plastic or wooden wedges. It is very convenient to use a set of thin wedges, with their help you can accurately align the box in all axes. It should be remembered that the racks of the box must be vertical in two perpendicular planes - from the side of the canvas and from the side of the wall. The correct operation of the door block is 80% dependent on right position door frame. In a number of models of interior doors there is a special decorative strip, which is detached and mounting holes are drilled under it. At the end of the installation, the bar is put in place. To fix the frame with screws, you need to drill 3-4 holes with a diameter of 4 mm on each rack and transfer them to the wall with a pencil or marker. After that, the box is removed and nests for dowels are drilled in the wall according to the markings. Do not forget that wood drills do not work in concrete. brickwork drilled with a perforator with a drill for stone. Drill diameter - 6 mm, according to the size of the plastic sleeve. When the holes are ready and the dowels are inserted into the wall, the frame returns to its original position and is pre-fixed (“baited”, as the masters say). Before the final tightening of the screws, the position of the vertical and horizontal parts of the box is once again controlled. The tightening is carried out in a circle, first the screws are twisted halfway, then with maximum effort. In order not to overtighten the fasteners, during tightening, the verticality of the racks is checked with a long two-meter level or rule.
The use of building laser level improves the accuracy of the door frame installation
Installing the door leaf on the hinges. Since we are considering a light interior door made of MDF or fiberboard, one person can hang the sash on the hinges. It is enough to lift the door above the canopies and carefully put it on the hinge axis. After that, the door leaf must be closed and checked for the correct location. If the door is mounted in compliance with all technological standards (gaps of 3–4 mm on each side), it will move easily inside the frame and without human effort. In the open state, the sash will not spontaneously slam shut, and in the closed state it will open. If the purchased door does not have grooves for hinges, you need to make them yourself. To do this, a cutter is inserted into the tool, the depth of immersion in the wood is adjusted, and a groove is selected according to a pre-marked size with a translational movement. The accepted location of the hinges is 20–25 cm from the upper and lower edges of the sash.
The hinges are placed above and below at the same distance from the edges of the door leaf
Filling joints with polyurethane foam. This is a crucial moment, since such important door parameters as sound insulation and heat resistance depend on the filling density. It is better to use mounting foam with a low coefficient of expansion. To accelerate the setting and hardening of the polyurethane, the walls and the door frame are moistened with water (sprayed from a spray bottle). Filling is carried out sequentially, from the bottom up, so that there are no voids left, but at the same time, foam flakes do not fall to the floor. During the operation, it is advisable to cover the door with foil, as prolonged contact with polyurethane may cause stains on the laminated surface. As the foam dries, it increases in volume, so the seams are initially filled by 30–40%. After complete solidification (after 24 hours at an air temperature of 20 ° C), the excess is cut off with a sharp knife. During foaming and drying, it is not recommended to open the door leaf. It is advisable to put pieces of packaging cardboard into the gaps (along the perimeter). This will prevent deformation and deflection of the frame in case there is too much foam.
It is better to fill the mounting gaps with foam from the bottom up, carefully processing the voids
Doorway trim. Upon completion of the installation of the door, it is necessary to put the opening in order. To do this, slopes or platbands are installed in it. For interior doors, slope finishing is rarely done (although this is also practiced, depending on the installation location and the function of the door). The most common type of decoration is platbands and dobors. If the size of the wall is small and the width of the door frame coincides with it, platbands are installed on both sides and this finishes the opening. If the width of the box is not enough to close the wall completely, use extensions. With their help, the plane of the frame expands, and the platbands are no longer attached to the box, but to the extensions. It is interesting that designers sometimes consciously choose the colors of the extensions that contrast with the color of the door. Such solutions are original and emphasize the door as an element of the interior. Platbands are installed in several ways, depending on their design:
- groove connection;
- gluing to the wall;
- hidden nails.
Hardware installation. The door handle and lock are usually included with the door. Or at least mounting holes are prepared in the web. If they are not there, you need to mark the sash and use a milling cutter and an electric drill to cut holes of the required size (for pre-purchased components). This should be guided by the instructions for installing the lock and door handle, which are attached to the products. The approximate installation height of the door lock is 90–110 cm from the floor. The handle is mounted at the same height, retreating 10-15 cm from the edge of the door leaf.
The method of installing a door lock depends on its design, and it is usually located at a height of 90-110 cm from the floor

The type of connection of vertical platbands with horizontal ones can be different - rectangular or diagonal. From the point of view of installation, a rectangular connection is considered simpler. For a diagonal joint, it is important to make an accurate cutting of the workpieces at an angle of 45 °. For this, the masters use the end circular saw. But with small volumes, a carpenter's miter box can also be used.

The diagonal connection of the architraves requires a perfectly even cut at an angle of 45 degrees, which is carried out using a miter box or a circular saw

Many modern models interior doors contain a rubber seal in their design. Its installation is most often carried out by gluing. Removable from the inside protective film, and the sealant is carefully glued around the perimeter of the entire door leaf.

Video: how to install an interior door

Installation of double doors

Bi-fold door blocks are a popular interior decoration. They fit especially harmoniously into wide doorways, emphasizing the spaciousness in the room. Doors with two leaves are:

When assembling double-leaf doors, the algorithm remains the same as for a single-leaf door. But there is one caveat associated with the door suspension. The first to be installed on the hinges is a sash with a latch, which cuts ahead of time into the upper part of the canvas. After installing the sash on the hinges, it is fixed with a latch and proceed to the installation of the other half of the door. Thus, the alignment of the canvases with respect to the frame and with each other is achieved. The gaps adopted for a single-leaf door are also relevant for a double-leaf version.

The latch holds the door leaf in a fixed position

The sliding design of double doors is different in that it does not have a frame in the usual sense. The door leaves are supported by a suspension profile equipped with a rocker mechanism. Naturally, the installation of such a door differs from the assembly of swing structures. Installation is carried out on straight walls with a sufficient margin of space (you need space for opening doors).

Around sliding door it is necessary to provide a margin of free space for the racks leaving when opening

Installation begins with the assembly and fastening of guide profiles (which can be both above and below the doorway). Further, the procedure must be carried out in this sequence.

Fastening on canvases of brackets with fittings (carriages and movable rollers).
The diagram of fastening the door leaf to the rocker mechanism, indicating the mass of the door leaf, is attached to each product.
Installation of shutters on the suspension mechanism.
Fastening of stoppers (rubber limiters for opening the valves).
With the help of the limiter, the free play of the door leaf is adjusted to protect it from impacts on nearby objects and surfaces
Installation of dobors and platbands on the doorway.
Installation of additional door fittings (brushes, seals, grips).

On preparatory stage marking and leveling of the wall plane is carried out. This is important because the door leaves are constantly moving along the walls.

The main document that you need to read when installing sliding doors is the assembly instructions from the manufacturer. It reflects technical requirements installation and basic rules of operation.

Video: installing a double swing door

It is customary to mount interior doors after indoors finishing works. In particular, it is not recommended to prime, plaster or paint the walls after the doors have been installed. high humidity negatively affects the wood-shaving material - deformation and bulges are possible structural elements door block.

Installation of interior sliding doors

The sliding door is one of the options for sliding interior doors. Unlike the double-leaf design, the interior compartment door can be single-leaf, three-leaf and even four-leaf. Moreover, one or two canvases can move at the same time. Installation is carried out in the same manner as for a sliding door in accordance with the manufacturer's instructions.

Compartment doors save space in small spaces

Video: installation of interior compartment doors

Installation of sliding door structures

A characteristic feature of sliding interior doors is the movement of the door leaf along the support profile located on the floor. Installation is carried out after finishing the floor. The guide profile is installed in parquet, laminate, ceramic tiles or other flooring. Often the door leaf is hidden in the wall cavity, specially prepared for this.

Before installing the sliding door, a false wall is built to hide the sash

There are options for making a false wall or a drywall box-pencil case for sliding interior doors. But in any case, the suspension mechanism remains identical to that of all other types of sliding doors.

Video: installation of sliding interior doors

Installation of sliding interior doors

Sliding interior doors save space in small spaces. But for their installation, certain conditions are needed, the main of which is the availability of space for moving the door leaf. sliding doors may be single or double sided. The supporting rocker mechanism is located, as a rule, from above, and a restrictive profile is mounted from below, which prevents the canvas from swinging during movement.

Used in planning various options the location of the canvas in the doorway

Installation of glass doors

Glass doors are a very original solution for interior decoration. Like doors made of other materials, they are hinged and sliding. In private housing construction, the swing type is usually used. glass doors. In general, the principle and procedure for their installation does not differ from the standard one, however, there are several features.

The glass door leaf cannot be adjusted in size, it cannot be sawn or cut. Therefore, in order to avoid errors, the doors are ordered after finishing walls and doorway (when the dimensions are no longer changed).
Door installation is not done alone. The weight of a glass sheet is usually from 50 to 70 kg, it is difficult and dangerous for one person to manipulate such a sash.
The glass interior door is mounted on a wooden or metal box.
The durability of glass doors is only limited by the durability of the hinges. Pendulum loops are considered the most reliable.

To assemble the suspension of glass doors, mounting holes are cut in their leaf at the factory

Holes for the installation of hinges are cut at the glass door manufacturer. You need to drill holes for the lock and handle yourself, using a glass drill of the desired diameter.

Holes in the glass are drilled with special drills at low speeds.

The advantage of glass interior doors is an almost unlimited service life. Their appearance is not subject to mechanical or chemical attack, the strength of the glass block is comparable to the strength of metal. The only thing to watch out for is the safety of the hinges and fittings. Timely lubrication and removal of contamination are two necessary conditions for long-term operation of glass interior doors.

Video: installing glass interior doors

Installation of fittings on interior doors

Installation of fittings, perhaps, is the most crucial moment in the installation of interior doors. It is during this part of the work that errors occur, leading to quick breakdowns. Therefore, starting self-assembly, you need to tune in to the painstaking "jewelry" work. Mistakes are too expensive.

So, accessories include:

All fittings require precise cutting into the plane of the door leaf or frame, and this presents a certain difficulty for beginner carpenters. The permissible error must not be exceeded by more than 1 mm. Otherwise, there are no firm guarantees for the stable operation of the mechanisms.

Sampling is done manually (chisels) or with the help of power tools. At this stage of work, a manual electric mill is used.

Thanks to its high speed, the router performs neat and clean cuts on wood

Work sequence

Installation of fittings on a swing interior door is carried out in the following order.

Markup. Before you start cutting a hole, you need to determine the location of the hinges. As noted above, in order to evenly distribute the weight of the leaf, the hinges are located symmetrically 20–25 cm from the edges of the door leaf. The contours of the loop are drawn with a sharp pencil and circled around the perimeter with a knife, scalpel or semicircular chisel.
It is desirable to outline the contour of the loop with a sharp pencil, a thin awl or a scalpel
The device of a seat for loops. With a chisel, wood is gradually selected from the intended contour. It is necessary to control the depth of the groove within 2–3 mm. The accuracy of the cut is checked with a hinge - when it is applied to the specified place, the front part of the fittings must coincide with the surface of the end of the door. When sampling for hinges in MDF doors, the manual method is ineffective, it is advisable to use a milling cutter with a small diameter cutter.
The hinges must be flush with the surface of the canvas
Preparation of recesses in the frame. Having made the grooves and installed the hinges in them, they proceed to the manufacture of similar seats in the door frame.
Installing interior door handle. The operation consists in cutting out a seat for a lock and a hole for installing a rotary handle. It is difficult to do without a milling cutter, especially for a person who does not have carpentry experience. Using a long cutter, a groove of a certain depth is selected for the lock. With a small cutter, cut out the pot for the lock plate and striker. To accurately determine the location of the lock tongue, it is smeared with a coloring matter (nail polish, chalk, paint) and released onto the frame. In the indicated place, a hole in the reciprocal plate is installed.
Making grooves for door lock done with a cutter
Bolt installation. It is carried out depending on the design of the locking element. As a rule, the installation of a high-quality latch involves the selection of a masking groove. The device is applied to the edge of the door leaf, its shape is outlined and a groove is cut along it.

Video: inserting a lock into interior doors

How to check the correct installation of an interior door

Everyone who has to install interior doors for the first time asks questions: is the door mounted correctly and what needs to be done so that it lasts a long time and properly. They have an exhaustive answer, which consists of two points.

A sign of a correctly carried out installation is the same technological gaps around the entire canvas. This means that if the gap around the sash is the same size everywhere, the canvas is hung correctly.
The door must pass a small test. When opening (and closing) the canvas, no extraneous sounds, squeaks, rustles (rubbing of one surface against another) should be heard. At the same time, the sash moves easily, without applying any effort. If the hand stops, the canvas stops, it should not move on its own.

If these two conditions are met, the door is installed in accordance with technical and operational standards.

Often the installation of an interior door is preceded by dismantling. Disassembly is carried out in the reverse order of assembly.

Decor elements are detached - platbands and extensions. In this case, use a mount or a large screwdriver. decorative elements can be reused, so do not break them during dismantling. If these parts are kept intact, they can be painted, pasted over with a laminated film and used when installing a new door.
Platbands are removed using a mount or an ax
Hardware is removed from the door leaf - locks and handles. Unscrewing the lock is carried out from the end of the door leaf. The rotary handle mount is located on one side of the door (at the bottom of the lever).
The door leaf is removed. To do this, the sash is opened at an angle of 90 o with respect to the frame and lifted by the lower edge using a crowbar, mount or other lever. After the canvas is removed from the hinges, the canopies can be detached and reused.
To remove the canvas from the hinges, it is rotated 90 degrees and lifted using the lever
The door frame is removed. To disassemble the frame with the least effort, it is necessary to determine the places of its fixation to the wall. Sometimes it is difficult to do this in old doors, especially if slopes from cement mortar. Then the usual will come to the rescue electric jigsaw. If the frame is not going to be used in the future, it can be cut in cross section and separated from the wall piece by piece. This greatly speeds up the dismantling process. In the same way, the upper crossbar is also released.
With the help of power tools, the dismantling of doors is accelerated several times

If there is no firm self-confidence, of course, it is better to turn to professional installers, because the correct assembly and installation is not the only, but a necessary condition for the long-term operation of interior doors. But if you have at least a little experience in carpentry, and the operations described in this article do not cause you to doubt the possibility of repeating them, feel free to proceed with installing the door yourself. You can save money and be absolutely sure of the quality of each action.

Interior doors are becoming more and more popular due to their functionality. Such doors perfectly perform a variety of functions: they divide the space that exists between rooms, provide heat and sound insulation. Right installed doors contribute to the fact that the room acquires an aesthetic appearance.

How are interior doors installed?

It should be noted that such a process as installing doors is not particularly complicated, but it cannot be called simple either. Even an unprepared person can successfully perform such work, but it is necessary to take into account some nuances and follow certain rules. The main condition for installing interior doors is that such a process can be carried out only after the finishing work is completed.

Before installing the doors, they must be thoroughly prepared, that is, “acclimatized”. It is necessary to do all the work in such a way that there will be no surprises in the very near future. To do this, you need to leave the doors in the room where you plan to install the installation, for about 5-7 days. In this case, it should be borne in mind that in no case should doors be placed near batteries.

Before installation can begin, the door openings must be properly prepared. In this case, special attention should be paid to the height and width (they should be 70 and 100 cm larger). After that, you can proceed with the installation. This will require tools such as:

screwdriver;
self-tapping screws;
mounting foam;
Miter saw;
roulette;
dosing gun;
building level.

It must be borne in mind that the installation must be carried out in a clear sequence, which must not be violated.

Preparatory work and fastening of hinges

In this regard, special attention should be paid to the gaps, their value should be 10 mm.

Facing should be carried out at the same place where the door is installed.

For such a process, it is necessary to use a miter saw, thanks to which it is possible to make the corners as accurate as possible. In order not to scratch the floor, you need to prepare a substrate.

As for the fastening of door hinges, here, too, you need to be absolutely accurate. First of all, the places for inserting the hinges are determined, then they are securely fixed on the door frame and the canvas. When hinges are mounted, it is advisable to install special keys. Then everything can be done with the utmost care and there will be no scratches. Everything must be done on this stage very carefully, since any inaccuracy can lead to the fact that it will take a lot of time and then it will be necessary to make holes again.

Installing the lock and door leaf

Choosing a lock today is not a difficult task, since the range of this product is very large. Nevertheless, whatever lock is chosen for installation in an interior door, certain rules must be taken into account. First of all manual mechanism the door lock is inserted into a special niche, which is available in the door leaf. In this case, it is necessary to make sure that all the holes coincide completely, and only after that the lock should be screwed. This must be done with the utmost care. But as for, at this stage it is not necessary to do this.

To install the door leaf, you must use the building level. With this process, it is necessary to fill the gaps between the wall and the box mounting foam. It is recommended to do this with a special gun, then it is possible to adjust the foam supply, which will not allow the canvas to be filled. After filling the gaps, you can fix the platbands.

The final step is the installation door handles while making sure that all parts are available. Particular attention should be paid to the presence of a special key, it is with its help that you can strengthen the handles, make a mount for the door lock.

Given all this, we can conclude that there is nothing difficult in installing interior doors with your own hands. You must strictly follow the rules, be careful and patient. Then there is no doubt that such work will be effective. And all this can be done in a short time.

The installation instructions for interior doors allow you to install such structures on your own without much difficulty. You just need to strictly follow its points.

Thank you for your help in creating the article of our partners: Porta prima interior doors factory - www.portaprima.ru

Door structures between rooms in an apartment or a private house cannot be called very complex. technical systems. However, their assembly and installation require knowledge of a number of nuances. Firstly, a self-installed door should not spontaneously open. Secondly, it must close without excessive effort. Third, door structures must have a certain strength and not fall apart in cases where they are mounted in the dwellings of "lovers" to slam the doors.

Do-it-yourself installation is carried out in several stages:

Assembly of the supporting structural element - the box.
Installation of the canvas, and then the box beam (a handle, hinges and other fittings are attached to it).
Aligning the box in the door and fixing it securely.
Canvas hanging.
Finishing of doors with platbands.

Types of interior doors

A conventional door block consists of two elements - a leaf and a box. The latter is made of hinged and feigned timber, as well as lintels. If you will be installing doors with a threshold, the box is supplemented with a special bottom bar. The door leaf in most cases is hung on two hinges. There are systems with three loops, but they are used extremely rarely. The set of door blocks, as a rule, includes platbands. If the manufacturer does not provide any, you will need to purchase them separately.

In situations where the door frame is smaller in width than the door opening, you need to purchase extensions or trim the walls with flashings or slopes that are more elegant in terms of design. Here you need to know that professionals do not advise plastering slopes if you do the installation of structures made of wood materials(for example, from MDF). Such doors are simply deformed after applying a plaster composition to them.

An excessively wide opening is often reduced with the help of wooden beam. Its dimensions should correspond to the "extra" width. Such a beam is installed from the side of the door pillar, where its hinges are located. The beam is attached to the rack with small cross-section universal self-tapping screws, and it is connected to the wall with anchors. Installation interior structures it is recommended to do it with your own hands after pre-finishing the premises (it is understood that you have leveled the walls, carefully and accurately puttyed them, and then plastered them).

Reducing the doorway with a wooden beam

In other words, the assembly and installation of doors is carried out after the completion of all, without exception, "wet" finishing work.

Otherwise, there is a high probability that the system may “float” from high humidity. Be sure to equip the rough flooring, as well as determine the thickness and type of finish floor that you will do. Without this, you will not be able to accurately mount the door frame to the height of the threshold. If you just decided to change the interior doors in a room where no repairs are being carried out, the latest recommendations do not matter.

It is very important to install the racks correctly. A door frame is attached to them. If you install it on crooked racks, the operational functionality of such a door will be minimal. Rack preparation is carried out as follows:

The upper parts of the racks must be cut with a hacksaw (it is better to take a saw with small teeth) and a miter box. This operation is easier to do if you have a miter saw.
By inside racks measure the required length (it consists of the lower gap, the height of the door leaf and the upper gap). The lower gap is usually taken to be about 1 cm, the upper one - no more than 0.4 cm. Prepare the second rack in the same way.
Now you start processing the lintel. measure desired length along the inside. The required length will include the width of the leaf, a small (about 0.4 cm) gap on the side where you will put the lock on the door, and another gap on the side of the hinges. Get the length (internal) of the lintel. Note - absolutely accurate.

Installation of interior door racks

Now you can saw off the ends of the lintel with your own hands (again miter saw or stool). This procedure is done at a 45° angle. Next we do door hinges. Their installation should be done as carefully as possible. It is important to determine the exact value of their depth and the distance between the lower and upper edges of the door leaf. The scheme of work is as follows:

We measure on the rack (on the inside) from the top edge a distance of 20 cm.
We apply the loop to the selected area, outline its contour (use a regular pencil).
When folded, the hinge leaves a free space (gap) from the rack to the canvas of 0.4 cm. We calculate the installation depth of the fitting element, taking into account its thickness.
With a chisel (or better with a milling cutter) we make a platform for the loop.
Similarly, we determine the size and location of the installation of the lower hinge. But in this case, the value of the lower gap (1 cm) must be added to 20 cm.
Having installed the hinges on the rack, we apply this design to the canvas and make marks about the areas where the hinges are located.
Remains to be done seats under the hinge elements.

You have accomplished a difficult task on your own. Now you can deal with the box and platbands. More on this later.

Do-it-yourself door frame assembly and installation

Installing the box yourself will be quite simple if you follow the workflow below. You need:

Attach (strictly perpendicular) with a stand to the lintel. If you are installing an interior product made of MDF, in order to avoid cracking it, you must first make holes with a drill and only then install self-tapping screws. Important! Holes are made of a smaller section than the diameter of the hardware used.
Put the box in the opening, and then fix it securely using spacers and wedges.
Take the building level and align it horizontally and vertical plane designs. After that, feel free to use self-tapping screws.
Hang the door on the hinges. It can be inconvenient to perform such a procedure on your own, so call an assistant. After hanging, check the quality of installation, eliminate certain installation defects, if any.
Close the interior door, install spacers of suitable sizes between the uprights and the canvas. They will save the box from squeezing out when blowing foam.

The last step is to fill the gap between the wall and the door frame. When the foam hardens, the spacers will need to be removed. You just have to install the platbands with your own hands. Everything is simple here - you file an angle of 45 ° and mount the elements in their place. Fastening of installed platbands is recommended: self-tapping screws; special nails (they are called finishing); on glue.

It is advisable to cover the tops of the self-tapping screws with decorative plastic caps. And nail heads are usually overwritten. Congratulations, you have installed interior doors on your own saving a lot of money on the services of specialists!