How to remove and replace the lock on metal entrance doors yourself?

While going to work or returning home, you are faced with the most unpleasant fact - the lock has stopped working on your metal front door. Don't panic! You can repair or replace the lock on metal entrance doors yourself, without resorting to the services of professional installers. How to do this will be described below.

Replace the lock

Why do locks break?

There can be many reasons why the lock on a metal front door fails and needs to be replaced. And it is not necessary that these are the machinations of attackers. The locking mechanism, even the simplest one, can break.

1. The bolts are jammed . This is the most common cause of breakdowns. The crossbars simply stop moving, and you cannot return them to functionality on your own. This occurs due to the fact that the door does not close completely when closing. The result is a distortion that affects the tongue, and it rests against the box strip.

2. Difficulty opening or closing . The problem is quite common. The locking mechanism does not work well, since the door was initially installed askew.

3. The door leaf has sagged on the hinges, and the locking mechanism works intermittently. To solve this problem you just need to eliminate the skew.

4. The key in the lock does not turn properly . It is necessary to check whether there is a blockage in the well or check the condition of individual elements of the locking mechanism.

5. Problems with the lock can be eliminated by cleaning, lubricating or replacing the locking mechanism core. If this does not help, you need to install a new shutter device.

In addition, a lock replacement may be necessary if homeowners want a more secure lock or the keys have been lost.

We work with brands:

Cisa Mul-T-Lock Kale Kilit Evva Abloy Tesa Dom Titan METTAM Cerberus Elbor Barrier

Mottura Apecs Kerberos Abus Seceremme ISEO Border

Tools for urgent lock changing

The set of tools is determined depending on the door material:

1. Measuring tools for marking: carpenter's square; level; metal ruler; roulette; pencil or awl.
2. Power tools are very desirable to get the job done quickly and accurately. Electric drill with a set of drills for wood or metal; electric milling machine; screwdriver
3. Mechanical tool: hammer; chisel or chisels; a set of flat and Phillips screwdrivers; files and needle files.
4. For wooden doors - carpentry tools: chisel, chisel.

Typically, such a minimum set is found in almost any house whose owner knows how to work with his hands.

Preparation for installation

The preparatory operations for installing door locks will be the selection and purchase of the lock itself, the selection of consumables (fasteners) and tools.

Immediately evaluate the scope of work, which can vary greatly depending on the type of construction of the door itself. So, in a solid wooden door you can install a lock in any convenient place, but in a frame or paneled door only where there is a power element (frame block).

Having understood the scope of the upcoming work, they collect the necessary tools for this.

How to determine the type of lock mechanism

In order for the door to be securely closed, it is advisable to use different shutter devices. Locking mechanisms of the lever and cylindrical type are most in demand. Hacking them will require different tools, which will significantly lengthen the time to open them.

Cylinder type locking mechanisms

Cylinder type of locking mechanisms
Structurally, the cylinder type of locking devices consists of a cylinder in which there is a cylinder (secret), pins and spring elements. The cylindrical locking device is closed using a secret key, which has a flat profile, with located recesses and protrusions (notches). If you have to change the lock, then for this type of design you can change the cylinder itself without completely removing the lock body.

Level type locking mechanisms

Lever type of locking mechanisms
Structurally, lever locking devices are equipped with a secret mechanism consisting of a certain number of plates equipped with special curved cutouts (levers). Keys for this type of lock are made as a round profile rod, which has up to 2 plates at the end. The locking mechanism is locked using plates. For a home craftsman, repairing such a lock can be difficult, so it is advisable to turn to specialists.

Disc type lock

Disc type lock
Disc type locks are models that resemble a cylindrical type of lock with a code mechanism made from a set of discs, each of which has its own cut size and shape. Such castles are also called Finnish castles. The key to such locks is semicircular and has a transverse thread. When you need to open the lock, the discs in the mechanism are connected, leaving a groove where the key fits. When the slots and grooves coincide, the discs make a revolution, moving the rod that performs the locking. The disc type of lock is repaired by replacing the cylinder. The disadvantage of a disk-type shutter device is the protruding part of the input. Disc locks are lockable devices with low reliability ratings and are easy to break into.

Locks with bolts

Locks with deadbolts
Deadbolt locks are distinguished by the large length of the key itself. The locking mechanism is opened when the key is pressed firmly into the slot. In this case, the notches on the key and the plates coincide, making the locking element move. The deadbolt type of locks is distinguished by high reliability and maintainability, but repairs will require more time to carry out the process sequence.

Device selection

Users often prefer to change the lock of an iron door themselves, considering it a simple process.
However, before proceeding, it is necessary to correctly determine the type of device that is installed in the canvas. Lever and cylinder locks are considered common, although there are other variations. Table 1. Types of locks for iron doors.

View, illustration	Description
Disk	Such a mechanism requires the presence of a round key with recesses on the sides.
Cross-shaped	In this case, the keys are a type of screwdriver.
Invoices	The keys for such locks have an oblong shape and notches on the surface.

Table 2. Common types of locks.

Type, illustration	Description
With electric magnet	The lock opens using a special magnet - this is a functional mechanism that works even at a distance of several meters. It is resistant to temperature and mechanical influences. The main disadvantage is the need for constant power supply, and in the event of any emergency power outage, the lock will open.
Electromechanical	These locks contain both electronic and mechanical components inside. The advantage of the locking mechanism is that it can be opened either with a standard key or with a remote control and a card.
Electronic	These locks are powered by electricity. They are opened by entering numbers and letters on a special panel. The principle of operation of the lock is similar to a car alarm.
Mechanical	Such locks are produced in two versions: lever and cylinder.

In order to make the right choice, it is necessary to consider the popular types of products in more detail.

Cylinder lock

It is believed that this is the most primitive castle available. The mechanism is installed in most budget metal doors, so the possibility cannot be ruled out that you will have to deal with its replacement.

Cylinder locks

Note! The advantage of these locks is that if they break down, you don’t have to replace the entire mechanism - it will be enough to buy a new cylinder with a “cylinder”. In addition, all parts for the products have standard sizes, so finding them on sale is not difficult.

Of course, such locks have a significant drawback - since they are primitive, they are often broken into by criminals, so it is recommended to choose products that require a key with double-sided perforation.

Prices for different types of mortise cylinder locks

Cylinder mortise lock

Level castle

Levers are metal plates that are installed inside the mechanism. The more there are, the more difficult it is to open the lock. The degree of security of the device can be assessed by the number of slots on the key for the plates. It turns out that this lock cannot be broken mechanically, because it is difficult to find a suitable master key for it.

Leveling mechanisms

This is also a common system, which is often installed in metal doors. Its popularity is due to its reliability, but understanding the design of the mechanism is more difficult. However, most companies include installation instructions with a schematic illustration of the parts included with the lock.

Prices for various types of mortise lever locks

Lever mortise lock

Lock with sliding bars

This type of lock will be the most difficult to replace yourself. However, these devices are often found in doors because they provide security for the apartment - it is too difficult to break such a structure. The lock is designed in such a way that the door is secured not only with bolts on one side, but also with auxiliary parts on the top and bottom. This allows you to securely block the canvas in the opening.

Design with sliding crossbars

Note! This lock should be handled with care both during installation and during operation, because there is a risk of inadvertently damaging the metal bolts or the door structure inside, which will negatively affect security.

Prices for different types of sliding locks

Sliding lock

Video - Locks for metal doors

Required Tools and Features

Before solving the problem of how to properly change the lock on a metal entrance door yourself, you need to decide what type of lock mechanism is installed, change it completely or replace only the core and prepare the necessary tool.

To work you will need:

• hammer;
• mechanical or electric drill and a set of drills for metal with diameters from 12 to 18 mm;
• sharpening stone;
• Bulgarian;
• pliers;
• chisels;
• screwdrivers - straight and Phillips.

It is also necessary to pay attention to the manufacturer of the locking device. If a partial replacement is required, you should select the required element only from the main lock manufacturer. If it is a different manufacturer, then you will have to spend additional time adjusting the part in the doorway.

Possible difficulties and problems

Installation difficulties may arise if there are differences in the size and configuration of the new and old mechanisms. Therefore, it is important to purchase a modern device with a failed locking element.

If there is no analogue in modern devices, you will need to adjust the lock opening, and you may need the help of professionals. When selecting an element, it is important to take into account the coincidence of sizes; small irregularities should be easily corrected without compromising the integrity of the door leaf. During complex work, the door may be left without a locking device for some time, so it will be necessary to protect the house.

How to replace locks on entrance doors with your own hands: detailed instructions

How to replace locks on entrance doors with your own hands
What do you need to know, how to consistently change the lock on a metal entrance door, and what preparation is needed? You need to be prepared for the fact that you may have to remove the door from its hinges, and this will require an assistant. The cylinder can be replaced by drilling, breaking out, knocking out or bumping. Any type of lock can be changed, but the main conditions must be met so that the dimensions and fasteners match. Otherwise, you will have to prepare a new place for the lock, and this is not always possible for a home craftsman.

Preparation for dismantling work

Removing and installing a lock on the door is preceded by dismantling work to remove the complete locking mechanism or its cylinder. The work is being carried out in stages. If you cannot change the cylinder, you will have to replace the entire shutter device. This is due to the fact that not all locking mechanisms are interchangeable. The second case is that there may be circumstances (unauthorized hacking) in which the lock is hopelessly damaged and requires a complete replacement.

How to remove a lock from a metal door

Sequence of work.

• Prepare a socket wrench (size 2.5 - 3) and screwdrivers.
• Remove the door handle and use a screwdriver to unscrew the plate.
• If the door is an old model and the handle is held by a nail, then it must be pulled out.

Note! To know how to properly remove the lock from a metal door, you need to pay attention to the fastening. The fastening in door handles in modern models has been changed. There is a small screw mount that can be removed with a universal wrench. Disassembly may vary depending on the type of construction. Old locks can be removed using a screwdriver in the usual way, or simply remove the plate on one side of the door leaf. New models are equipped with two plates, which are fastened together on the front and back sides. If there is no tab on the lock, when you open the door you will see two screws securing the locking device.

• Loosen the bolts and remove the lock housing with a screwdriver.
• With an old lock, you need to go to a hardware store or hardware store and choose a model that is the same size as the old lock mechanism and has an identical fastener arrangement.
• Insert the new lock into the hole and secure it with the fasteners (included).
• If the lock is equipped with a removable insert, you must first insert it, and only then the bolt mechanism itself.

Removing the fasteners

Removal of the fixing fasteners is carried out by unscrewing the screws and removing the plate using a screwdriver. Recesses for the locking mechanism and for the borehole will become noticeable in the door leaf. If the model is of a new and complex design, then you need to slowly inspect it and then follow the steps sequentially.

Repair

Repair work to restore the functionality of the lock is carried out in accordance with its type. It is necessary to familiarize yourself with the device, and only after that carry out repairs in order to prevent mistakes, and the lock corresponds to its intended purpose - to provide reliable protection against unauthorized entry of intruders.

Installation

When choosing a new lock that is identical to the old one, it is difficult to make mistakes. If a different type of shutter mechanism is chosen, then difficulties may arise. To do this, you will need devices and tools that allow you to work with an iron door. There may be deviations in dimensions from the previous lock, places of fastenings, and location of linings.

How to replace the front door lock video

How to choose a replacement

When buying a new larva, you need to pay attention to the following parameters:

• degree of reliability (secrecy) of the cylinder (for example, you can easily break a locking device and open a door with a cross-shaped core in the lock using a Phillips screwdriver, and a disc lock can be opened in 5 minutes by beginners who have only a theoretical understanding of the method of breaking and in 2 minutes by professional “burglars” ) - today, locks with a punched card key are the most protected from unauthorized opening;
• the length of the core must correspond to the thickness of the doors. A discrepancy of 3 mm is allowed. In this case, the cylinder on the outside should be flush with the door or buried in it, but not protrude (you can open such a lock in a couple of seconds by hitting the core of the lock hard with a hammer or any heavy object);
• the mounting hole for the new cylinder should be in the same place as the old one;
• type of mechanism that moves the crossbars - a cam or gear;
• type of cylinder: “key-key” (opened from the outside and inside with a key) or “key-turner” (the apartment has a rotary handle with which the lock opens and closes).

A “key-key” cylinder with a gear for a punched card key.

The larva "key-spinner".

When going to the store, you can take the old larva with you and buy according to the sample (at this time someone must remain in the apartment or the front door is locked with one lock). If this is not possible, then you can take measurements from the larva in two ways:

• use a ruler or tape measure to measure the main dimensions (total length and distance from the edge of the cylinder to the mounting bolt);
• Draw the contours of the core on paper, marking the mounting hole.

For information: on sale you can most often find cores with lengths of 6, 7, 8, and 9 cm. In this case, the thread for the mounting bolt can be located anywhere - selection is necessary.

Measurements of core parameters with a ruler.

Another point worth paying attention to is the color of the larva. It should fit harmoniously into the color of the doors and not stand out.

Attention: as noted above, lock cylinders are manufactured according to the DIN standard. Therefore, there is no need to measure the diameter of the larva and write down the name of the manufacturer, as advised on most Internet resources. They are all interchangeable.

Locks with sliding bolts. detailed instructions

Trying to achieve higher reliability of the bolt mechanism, many owners opt for locks that have sliding bolts. The crossbar is translated from German as a bolt (crossbar or bolt). In locks, the function of bolts is performed by metal rods having different diameters. When the door closes, the bolts fit into the openings of the door frame on the sides, bottom and top.

Replacing a deadbolt lock is quite difficult. This is due to the design of the shutter device located inside the iron door, which will have to be disassembled. All actions must be performed consistently and carefully.

• Replacing a deadbolt lock on an iron door begins with removing the door leaf from its hinges.
• Now we need to open the canvas itself.
• Using a wrench, unhook the crossbars at the top and bottom.
• Replace the lock.
• Attach the crossbars.
• Attach the door leaf.
• Hang the door on its hinges.

Removing the door from the hinges yourself is quite labor-intensive and difficult due to the weight of the iron sheet. You'll have to invite an assistant.

Reasons for failure

First you need to identify the nature of the breakdown.

In difficult situations, it is not always possible to fix a breakdown with your own hands. The main reasons are:

1. Non-slamming tongue. The source of failure is the small size of the hole where the tongue fits. To do this, bore and change the position of the iron plate. It may also not close due to the skew of the lock lining. This occurs due to wear and tear of the mechanisms. Repair comes down to adjusting the position of the lining.
2. The door is hard to open. This occurs due to misalignment of the door frame or the lock itself.
3. The key turns poorly. This breakdown most often occurs on metal doors and occurs due to clogging of the well. Repair consists of disassembling, cleaning and lubricating all parts.
4. The lock is jammed. The reason is the breakdown of the larva. To get rid of it, you need to change the lock on the door.

How the lever lock changes. detailed instructions

Structurally, lever locking devices are equipped with a secret mechanism consisting of a certain number of plates equipped with special curved cutouts (levers). There must be at least 5 plates, only then can we talk about the reliability of the shutter device. Before replacing a lever lock in a metal door, you need to check:

• there is no key in the well;
• the crossbars are not fixed, but moved apart;
• the door leaf is open.

Now you need to remove the door latches and handles. Then unscrew the screws that secure the body to the metal door. Remove the non-working mechanism. Professionals advise paying attention to the manufacturer of the locking device. If a partial replacement is required, you should select the required element only from the main lock manufacturer. If it is a different manufacturer, then you will have to spend additional time adjusting the part in the doorway.

Replacing the level lock on the front door video

Practical recommendations

• Initially, focusing on the lever lock as the most complex, it is better to buy one of the imported products. Their repair is somewhat simpler, since almost all the parts necessary for replacement can be purchased at retail. In addition, it is possible to “reconfigure” the levers. But most domestic samples cannot be recoded.
• In order to be less likely to encounter the problem of how to change a door lock, it needs to be lubricated periodically. Moreover, it is not necessary to dismantle and disassemble the mechanism. A syringe is enough, the needle of which fits freely into the well. After injecting engine oil, you only need to turn the key to the sides a few times, to the limit.

Cylinder type

Replacing a cylinder-type lock on an apartment's entrance door is not as difficult as other types of lock mechanism designs. Structurally, the cylinder type of closure devices consists of a cylinder in which there is a cylinder (secret), pins and spring elements. The cylindrical locking device is closed using a secret key, which has a flat profile, with located recesses and protrusions (notches). There is no need to completely change the lock; it is enough to change only the core without completely removing the lock body

Work must be carried out with care to avoid damage to the surface of the canvas.

• Unscrew the plate mounting screws and remove the core.
• You need to find and unscrew the screw that secures the liner.
• Disassemble the lock.
• Insert the key into the cylinder, turn left or right along the axial tab and remove the bolt mechanism from the lock.
• It is better to buy a new tab if you have the old one in hand in order to compare the sizes and places for fastening. Ideal is their coincidence.
• We insert the insert into the key hole and carry out all the dismantling steps back.

Important! The new liner should go in easily.

• Tighten the screws to secure it.
• Secure the plate.
• Check how the lock works.

You only need a screwdriver to get the job done.

If the lock is broken, it is difficult to remove the cylinder. You will have to drill it out with a drill and remove pieces of metal.

Cylinder repair procedure

In general, repairing a cylinder is a troublesome task. It is much faster and cheaper to find a new liner and replace it. And that's why.

• You need to know the design and understand the operation of the mechanism.
• Worn parts in the lock cylinder are almost impossible to restore.
• Inviting a specialist is expensive, but it is especially pointless if the lock has expired.

You need to be prepared for the fact that the repaired cylinder will not work in the lock for long.

Hull repair

How to change the lock on a door if its body is broken? And how to properly remove the lock from a metal entrance door? First, we determine the type of lock: overhead or mortise.

If the overlay housing breaks, you need to take a screwdriver and unscrew all the fixing screws, and then replace it with a new housing and fix it.

With a mortise lock, you will have to remove all the elements and take the mechanism out of your pocket. When removing the spring, take the fabric that will secure it.

On the removed lock, unscrew the screws holding the case. Now you need to inspect the lock to identify damaged or bent elements. It may turn out that the case is intact, and the problem lies in the locking mechanism. If the problem is in the housing, replace it with a similar new one, but with suitable dimensions and fastening. All actions are performed in reverse order.

How to remove an old grub

The owner of the premises can easily change the cylinder as planned: just unscrew the fastening bolt (the nuances of replacement are below). But if an emergency occurs (the lock is jammed while the door is closed), it can be difficult to repair the lock (remove the old cylinder) yourself. The following methods can help in this situation:

• reaming;
• breaking out;
• knocking out;
• bumping.

Reaming. Drilling a channel in the cylinder along the pins allows you to quickly and humanely (in the sense of preserving the lock) first open the door and then remove the cylinder from the lock. You can read how to do this professionally in the material “How to drill out a lock cylinder.”

Breaking out. The breaking method keeps the door safe and sound, but the lock will have to be changed. The essence of the method is to turn the core with a gas (adjustable) wrench. To do this, a steel plate is driven into the keyhole, which is turned along with the secret, breaking everything inside. After this, the larva is pulled out, and the door is opened with the help of a hook.

Knocking out. A heavy hammer and chisel or a simple 24-27 bolt will help to knock out the larva. As with breaking out, the lock will have to be replaced. It is used in extreme cases, as there is a possibility of damaging the door leaf.

The principle of knocking out is simple: a chisel or bolt is placed on the lock (head up) and with strong blows of the hammer the larva is knocked out into the apartment, after which it will not be difficult to open the door. The only thing that needs to be controlled is that the chisel or bolt does not slip onto the door leaf. Otherwise, you will have to change the door itself.

Bumping. Bumping in itself does not make it possible to remove the cylinder from the lock or replace door locks in a metal door. It can be used to open a lock if the keys are lost, followed by replacing the core. By the way, it preserves the functionality of the larva. If you have spare keys and are confident that the lost key will not be used by attackers, you don’t have to change the secret.

Bumping is a kind of master key, only industrially produced. It looks like a classic English castle key. It's easy to use, but requires patience. To open a door, a master key is inserted into the keyhole and then struck. Kinetic energy is transferred to the pins and they are thrown up in a chaotic manner. The burglar's task is to seize the moment and turn the key, opening the lock.

Bumping key.

Disc type

Disc type locks are a model that resembles a cylindrical type of lock with a code mechanism made from a set of discs, each of which has its own cut size and shape. The key to such locks is semicircular and has a transverse thread. The disc type of lock is repaired by replacing the cylinder.

Repairing disc types of closure devices is similar to repairing lever locks. If such a lock is jammed, it needs to be disassembled, cleaned and lubricated. But there are options for disc locks, the repair of which is carried out, as in locks with a cylindrical design. It is important to consider that finding the cylinder for the disc lock is not easy. The lock will have to be completely replaced.

Useful tips

1. The new lock cylinder must correspond to the dimensions of the previous version. In addition, you should pay attention to its color. It should blend into the door and be invisible. The larva model is set according to personal preference. It can have two key holes or be closed with a latch from the inside.
2. Some cylinder cylinders may be subject to repair. This applies to collapsible types. First of all, you should find the plate fixed between the two paws. If you bend it, you can get acquainted with the problem and fix it. The work is quite painstaking and requires special attention. If everything is assembled incorrectly, the key simply will not fit. After all manipulations, the lock is lubricated with graphite. Liquid oils are not used, as they promote the adhesion of dirt and dust, as a result of which the lock stops opening.
3. You should not skimp on purchasing larvae. Cheap designs are easy to hack, as they are made of soft materials and do not have durable linings. It is better to give preference to larvae from the proven ones, “Apex”, “Kale”, “Ariko” and others.

Replacing the larvae in the lock (secret)

It is not difficult to replace the cylinder (secret, liner, core) in the lock yourself, especially since a complete set of a home craftsman is not needed. All you need is a universal screwdriver and a tape measure.

• When turning the mechanism, you need to set the lock to the “open” position.
• Unscrew the screws that secure the back cover and remove it.
• Remove the screws securing the end plate.
• The screw holding the larva is clearly visible in the center. We unscrew it.
• After these preliminary works, you need to press on the larva and it will come out easily.
• Measure the larva in length, width and diameter. They must match the old one.
• If the lock is broken, the secret is drilled out with a drill.
• Insert the new liner and secure with a screw.
• Fix the end and rear element of the bolt device.
• Check the functionality of the lock without closing the door.

Replacing the larva video

Repairing the lock on the front door yourself is feasible for many home craftsmen. Desire and patience are the main conditions to cope with this task. But at the same time, you need to remember that if you determine that the elements of the locking mechanism or case are hopelessly damaged, then the algorithm for disassembling and assembling the lock will be in vain. Significant damage or loss of main components is a reason for drastic action. Simply replace the entire lock, which will meet the expectations of quality, reliability and resist burglary.

Replacing the front door lock video

For what reasons and when do you need to change the lock?

First of all, a lock is a mechanism that tends to fail for a variety of reasons, so all owners of entrance and interior doors may be faced with the need to change the locking system. The most common situations in which an urgent lock replacement may be required are:

• Installation of new doors, the equipment of which does not include a locking mechanism. These can be either entrance door leaves or interior doors. In the first case, basic knowledge is not always enough. Before changing the lock on a steel door, you need to objectively assess your strengths, since this process is quite complex and requires professional intervention.
• Criminal burglary is one of the most unpleasant, but quite common reasons for changing the lock. It is good if the damage to the locking device does not affect the door leaf, since in most such cases it is necessary to replace not only the locking mechanism, but also the door itself.
• Loss or theft of original keys is the most common reason why owners are forced to change locks. Changing the cylinder is not only the only way to get into an apartment or office, but also a reliable precaution against unwanted guests entering the premises.
• Renting a home, workplace, or retail space is a service that implies the possible availability of keys not only from the current owners of the premises, but also from previous tenants. In addition, very often changing locks is a necessary measure for landlords. The acquisition of property is also often accompanied by a complete replacement of the entrance door locks.
• The failure of the locking system, as well as replacing the lock with a more reliable mechanism, is the direct reason why owners are forced to turn to specialists or install a new device themselves. But before you change the lock yourself as a result of a breakdown, it is recommended to conduct a thorough diagnosis of the device, since professional repairs are often much cheaper than installing a new mechanism on your own.

If at least one of the above reasons concerns you directly, then you should start selecting a suitable lock model, of which there are a huge number on the modern market.

If you are not confident enough in your own abilities, then it is better to entrust this matter, as well as the installation process itself, to professionals.

How to keep working

To ensure that replacement of the locking device does not take as long as possible, they, like any complex mechanism, need to be looked after.

Maintenance of a lock is, first of all, timely lubrication of its key points. But simply by pouring the first available oil into the well, the owner cannot be sure that the secrecy mechanisms have received everything they need. Therefore, it makes sense to familiarize yourself with the manufacturer’s recommendations for caring for the product: choice of lubricant, frequency of its use, quantity.

Our company is ready to provide a full range of services in Moscow and the Moscow region for opening, recoding, repairing and installing door locks of any type, from the most famous manufacturers. Extensive experience in the market, certified craftsmen. Reliability and safety. Official paperwork, warranty, service. An employee promptly responds around the clock.

A few final tips

1. Before purchasing, make sure that it is even necessary. Often you can get by with partial replacement or repair.
2. Changing the cylinder is 90% worth its cost compared to a full replacement if you have lost your keys.
3. To pick up a device, take your old one with you to the store.
4. If it is difficult to pass, sharpen the groove a little with a chisel. But don't overdo it.
5. Do not tighten the screws until you are sure that everything is working properly.
6. Screw the screws in smoothly so that the alignment does not shift.

There are many locking devices in stores that are all similar. They must be purchased and replaced carefully, carefully and consistently. If you doubt your abilities, it is better to order installation from Tandor specialists.