Manufacturers of expensive metal doors assure that a reliable armored door must have a sheet thickness of at least 2 mm. Even 1.5 mm requires the installation of additional stiffeners with a cell of no more than 150x150 mm. There are customers who do just that — they buy a door that is quite suitable for a bank branch. A simple example can be used as a counterargument.
The entrance metal door, the production of which is established everywhere, is made of a standard profiled steel sheet having a thickness of 0.5 mm, reinforced — 0.7 mm, load—bearing (for floors up to 6 m long) - 1.0 mm. Even ordinary corrugated sheet (0.5 mm) is used in the construction of metal hangars, warehouses, and commercial enterprises.
In the production of metal sandwich panels for frame houses, the thickness of the sheet may be even smaller. The question is, if the walls of industrial and commercial structures use a sheet with such a thickness, then why put something more powerful on the doors? An armored door can be explained in some way if the owner of the apartment is a collector, and his home is equipped with all the safety rules, including reliable locks, a burglar alarm system, which provides for the installation of bars on windows, a video surveillance system, etc. And this is for a city apartment.
The really rich live in secure houses or gated country towns.
The second argument is in favor of inexpensive models with a sheet thickness of up to 1 mm. Forcibly breaking the door in an apartment building will make a lot of noise. Only special forces can afford this. Thieves use lockpicks, and robbers often have their doors opened by their owners. Any expert will say that the weak point of the door is its locks. And combined with carelessness and gullibility, no armor will help.
Therefore, it is possible to install a door leaf with a small sheet thickness. The main thing is that the stiffeners ensure the strength of the structure. There must be an armored pad in the area of locks, of which there must be at least two (and different systems). It is also worth choosing doors with a latch and a peephole. If PU foam applied to the front sheet is used as insulation, this will add strength to the structure. When choosing an inexpensive door, you should pay attention to the decorative finish. Powder anti—vandal coating is optimal in terms of price and protective properties. Discover the ultimate welcome package with the
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