So that your home is securely protected, the entrance door must be durable. As a rule, steel doors are responsible for such requirements, but not all of them are the same. Tips on what should be the best steel doors and how to install them correctly, you will find in the following material.

The main thing is to pay attention to when choosing a door

1. It is important that the door cannot be broken by a blow or legs. Since it is impossible to make sure the strength of the structure is impossible (the store manager will hardly give it), you need to explore the design and try to find flaws in it. For example, if the thickness of the metal sheet is less than 1.5 mm - such a door is not suitable as an input (canvas can be cut with a simple knife).
2. It is better if the facial sheet thickness is equal to or more than 2 mm: it can be checked by simple door opening (it will be sufficiently heavy).
3. The inner cover of the door should also be made of metal (more subtle), lined with a decorative panel.
4. The design of the loops should prevent their cut: internal loops or special retainers can be used.
5. You need to get acquainted with the lock: its design, type and level of secrecy plays the most important role. Most robbery occurs after hacking the castle.
6. The optimal number of locks - two. One must be a suvalde (reinforced armor), another - cylinder or pin. Better - imported production: the number of combinations of keys to them - from half a million to four billion. The distance between them should be at least 300 mm. This will complicate the task of the hacker.
7. Check for video surveillance systems or ordinary eye. The latter must have a wide viewing angle.
8. Make sure that the manufacturer provides a warranty on the entire design, and not on the individual components. It is desirable that the manufacturer is known.
9. Check the quality of sound and thermal insulation. To do this, you need to study the accompanying documentation and find out which material is laid in the cavity of the structure. Soundproofing can be checked, just knocking on the canvas on the one hand, attaching the ear to another.
10. It is important that the door is aesthetically attractive and fit into the overall concept of the dwelling. Deformations and disks are not allowed.
11. Pay attention to how much steel doors cost: quality prices, reliable models can not be below 500 cu The best of them are more expensive than 1.5 thousand cu. Cheap Chinese (worth less than 100 cu) will last long and will not provide protection.

Metal door design

Metal doors Steel appropriate quality should be made from such elements:

• seamless sheet metal with front side (this is a prerequisite: otherwise the door can be destroyed by a strong blow);
• transverse and diagonal stiffeners - are made of metal corners (profiles) and necessary for the strength of the structure;
• platbands (preferably from metal), covering the slit between the wall and the door frame (interfere with hacking by mounting);
• the adder is a special protrusion protrusion, designed to tear the gap between the box and the web (is also the necessary mounted protection).

Heat insulation and sound insulation

This is worth telling separately, since these characteristics play an important role. Doors Steel input modern modifications must be completed:

• decorative outer panels (made of curved profiles) with a thickness of at least 8 mm: they will serve as a barrier for extraneous noise;
• high-quality rubber seal laid along the entire door show: it will cut the way to drafts and prevent dust penetration into the dwelling;
• the cavities between the outer web and the inner should be filled with mineral wool or extruded polystyrene foam: these materials are distinguished by the best characteristics on heat and sound insulation.

Exterior Steel Door

Today, decorative linings and panels from MDF, plastic or plywood coated with veneer came to replace the powder painting, PVC film and leatherette. The thickness varies from 4 mm (for internal surfaces) to 20 mm, but 8 mm thick panels are used more often.
There is an opportunity for steel doors to buy with a lining from the wood array, and with a pattern cut on its surface with a laser technology. Topper is applied tinning and protective varnish. Doors with such a finish are more expensive than other models and are more suitable for houses with an interior made in a classic style.

In this video, it will be described in detail how to choose the entrance doors.

How to install a steel entrance door

Installing the steel door should be made in accordance with certain rules. Otherwise, all the advantages of their production technology may be useless. In addition, you can lose manufacturer's warranties.
To begin with, you need to stock needed tools. It will take:

• nail-holder, ax or lomik to dismantle old doors;
• building level;
• perforator with a set of drills and nozzles;
• manual tool: screwdriver, hammer.
• roulette, marker.

The instruction with a phased description of the process looks like this:

1. The dismantling of the old door is performed (it is simply removed from the loops) and the door frame. To make it easier to get rid of the box, you need to cut it in several places. Doorway is released from nails and dowels.
2. If the measurements are correctly performed - the doorway will remain the same. In the event that it is necessary to expand it with a perforator and nozzles in the form of a chisel.
3. A new door frame is installed in the opening and temporarily fixed with wooden wedges.
4. The side of the box with loops is exhibited by level vertically and is fixed with wedges in a new position.
5. Through the mounting holes in the box perforator drills the wall. It is necessary to obtain holes with a diameter of 10-15 mm depth of 150-200 mm for anchor bolts. In the process of work control the vertical of the box.
6. Insert anchors and twist them, following the box position not changed.
7. Turn the door of the door after lubricating loops and fix the accessories.
8. The door closes and customize the side of the box corresponding to the position of locks in such a way that the flying firmly imparted to it.
9. This side of the box is fixed as it is indicated in clause 5 and paragraph 6.
10. Checked the correctness of the locks and the smoothness of the stroke of the door canvase when opening and closing. In case of detecting overwhelming locks of locks, you must extend the response parts using a file.
11. The mounting foam is filled with slits between the wall in the opening area and the door frame. A day later, all excess foam are cut with a knife.
12. We screw off the ticket: it will hide all the slots. After that, the door will be ready for operation.

In conclusion, a video with a steel door installation process.