When choosing the entrance doors, it is necessary to consider in which room this door will be installed. The cost of the entrance doors is approximately the same from metal -plastic and from a steel sheet.
The house built from a wooden beam or shield house “plays” under the influence of natural factors, changes in temperature, pressure and humidity, as well as from the change of season, summer or winter. Due to the fact that the house “plays” can occur a skew of the doorway. Since the plastic door is softer than metal, it will “play” along with a wooden house, which can lead to a loose fit of the door leaf to the door box. As a result, the tightness of the door may be disturbed, and this leads to the loss of heat and sound insulation. Therefore, it is advisable to install metal doors in wooden houses.
In residential premises built from other building materials, it is very convenient to install metal -plastic doors. As a rule, multi -wall locks are installed on plastic entrance doors. Such a castle provides uniform fit of the door leaf along the entire perimeter to the door box. And, this, in turn, leads to good tightness of the plastic door. Good tightness of the front door, the key that in the living room will always be warm and comfortable. Metal -plastic doors are very reliable and well resisting the hacking and penetration into the living room of attackers. The profile of the plastic door has a fairly impressive thickness of 1.5 mm. Typically, armored glasses are installed on metal -plastic doors. Therefore, such a door is not so easy to hack.
Metal entrance doors, as a rule, are made of cold -rolled sheet of stainless steel, about 2 mm thick. Such doors have a complex steel profile. Metal door loops are installed in hidden places. Complex locks often have additional protection in the form of a steel casing. Special polymer color has both protective and decorative properties. Such a coating is very stable both to mechanical influences and the effects of natural phenomena, such as the sun and wind, rain and snow, to constant temperature differences, pressure and humidity. If the door is made of ordinary cold -rolled steel, then this coating prevents metal from corrosion well. Coating on a metal door is applied in the factory using special technology.
Polimer in the form of powder is poured into metal in special furnaces at high temperature. After cooling, a high -quality and durable polymer coating is formed on the surface of the metal. Then, according to a similar technology, dyes are applied to several layers and the fixing layer. The inner surface of the door is finished with various finishing materials. Metal doors are often equipped with combined locks, which combine leaf, safe and cylinder (auxiliary) locks.
