This parameter is considered the main one. Indeed, the door block is required to protect against uninvited intrusion. To do this, it must belong to at least class I according to GOST R 51113-97. If you want the design to resist not only manual, but also electric tools, look for a class II-III model.
However, it should be borne in mind that a good door is useless if there is no adequate protection on the windows or the walls of the house themselves are not strong enough. In addition, overcoming any passive obstacle is a matter of time. That is, if you leave the house for a long time, it makes sense to connect it to the console security system.
Some firms reinforce the sheets with reinforcing bars: this design takes up to 20 minutes. resists even a powerful grinder. Photo: Torex
A mandatory attribute of a burglar-resistant door is anti-removable pins. Photo: Leganza
The strength of the door largely depends on the method of mounting the box: the more attachment points, the better. Photo: Neman
2. Thermal insulation
Unfortunately, a low thermal insulation index is an “inherent” disadvantage of a steel door. It is possible to order a product made of profiles with a thermal break or equipped with an electric heating system for the porch zone and the lock pocket (to avoid freezing of the door leaf and blocking the locks). However, both of these solutions are expensive.
It is easier and cheaper to install a second (tambour) door made of wood closer to the room – as a rule, the thickness of the walls in a country house allows you to do this.
Filling the canvas and the box with expanded polystyrene or polyurethane foam improves the thermal insulation characteristics of the door block, but does not save from freezing in the area of the lock and hinges. A multi-layer “stuffing” is somewhat more effective. Photo: Leganza
The front door is an important element of the facade, it is obliged to decorate the building. As a rule, embossed panels, a protruding layout, massive hinges and a handle are welcome. The design of the canvas can be supplemented with glass inserts and forged details. Alas, such decor is not cheap and you should come to terms with the fact that a door for a country house will cost at least one and a half times more expensive than an apartment door.
Glass inserts should be small in size, otherwise they will have to be covered with bars. Photo: Torex
Photo: Vladimir Grigoriev
4. Corrosion resistance
No canopy is able to completely protect the structure from moisture, and it is not uncommon for rust to appear on the canvas and box after 5-10 years of operation. Therefore, it is highly desirable that the main parts be galvanized or coated with a special primer or paint.
A small visor will not protect against slanting rain. It is better to provide a porch with a canopy in the project. Photo: Gerda
5. Weatherproof finish
Ordinary vinyl plastic exterior panels often burn out in the sun, and MDF products delaminate when exposed to moisture. The optimal finish of the entrance street door is marine plywood, solid wood or powder coating.
Most steel doors are finished on the outside with laminated panels that are not always weather resistant. This parameter must be clarified with the seller and inquire about the warranty period for the panel (it must be at least two years). Photo: Torex