Doors in the building are divided into internal and external. External doors differ from internal doors, first of all, in their strength and reliability. The expression “My home is my fortress” has not been canceled. The main purpose of the outer door is protection against unwanted intrusion. Its functions also include soundproofing, keeping the heat of the home. In addition, the outer door is also an element of the facade of the building, so it must be in harmony with its appearance.
In the old days, the entrance to the dwelling was simply hung with a mat. For a long time the doors were exclusively wooden. But times are changing, and everything is changing, including the doors are being improved. Wood is still in use. In particular, phylene doors, or a strapping structure, consisting of a phylenka and strapping are currently made, are currently made. Shield doors with continuous filling of the canvas or finely labeled, are used as external only when they are covered with moisture resistant finishing material.
In addition to wooden, industry produces steel external doors, reliable, durable, capable of ensuring the safety of housing. Steel doors are also placed as entrance doors to the apartments. The only difference is that the external is covered with moisture -proofs.
More and more often used glass external doors. For their manufacture, hardened glass is used up to twenty millimeters thick. The production technology of this type of glass increases its strength several times, thanks to which it provides a high level of security for exterior doors made from it. Such doors are equipped with an automatic opening system, electronic combination locks, blocking kits, remote-controlled latches.
Exterior doors can be made of aluminum profile. This is a high corrosion resistance, it is lightness, strength, durability. Doors made of aluminum profiles fit perfectly into the design of the building, are easily integrated into the facades of the system profile, harmoniously combined with other materials. In long service, they are facilitated by the type of locking hardware and hinges applied to them. Front exterior door outperforms all others. Doors from the back door are made as less noticeable as possible: they are painted so that they merge with the tone of the walls of the house.