Duplex door: advantages and options

The main distinguishing feature of two-fielddoors is a design consisting of two flaps. For their production, a steel profile with high strength and resistance to burglary is used. The simultaneous operation of the flaps is possible, while both they and the box itself can have different dimensions. The most common is a two-leaf door in which one leaf is large and acts as the main one, the other is secured with a latch and used as needed, for example, for the removal of large furniture.

Applications

Such iron doors are most often found inpublic premises, in production, as well as in porches and corridors with high traffic. Their application is rational in educational institutions and polyclinics.

The classical version is issued in the formThe structure consists of three elements: leaflets and a box. Refractory and thermal insulation characteristics are achieved using a steel profile and other fireproof materials that provide protection against overheating and deformation.

Double-faced metal door is installedas in multi-apartment buildings, and in commercial premises to increase the security of being in them. It allows you to quickly evacuate the tenants and at the same time reduces the speed of fire spread.

Finish

Previously, external performance was limitedmetal faceless canvas, suitable only for industrial premises. Currently, in the range of shops are presented various options, powder coated. Nitro-enamel not only protects the surface from corrosive phenomena, but also gives an original look. There are also models supplemented with materials such as MDF and laminate. Doors fireproof two-pole can have decorative forged elements, to be executed with or without glazing.

The main task of such constructions ispreventing the spread of fire to other premises, due to this people can easily get out of the burning building. It is worth noting other features, among which:

• resistance to deformation changes and impact damage;
• In case of fire, there is no possibility of a sudden increase in the temperature level in neighboring rooms;
• a significant reduction in the amount of passing smoke and burning;
• resistance to fire.

Now the iron doors, the average cost of whichis in the range of 15-20 thousand rubles, have become widespread due to the many advantages and high decorative characteristics. Despite the variety of options, the choice is not particularly difficult, also it should be noted easy installation, which requires minimum relevant skills and knowledge of the stages of work. Difficulties can arise with the installation of a mortise lock, as this requires maximum care.

Advantages and disadvantages

The main advantage is a comfortableexploitation. A two-sided opening that does not require noticeable efforts is provided by a pendulum system. The exterior design will make the room more cozy and welcoming, while it is represented in an extensive design variety. The door is a two-pillar, the price of which depends on the materials used, is optimal for non-standard openings, while single-leaf doors often have to be made to order.

Such interior doors are not always convenient inSmall rooms, as in this case, their operation is difficult. For a small apartment, the sliding variants are best suited, differing by a smooth and noiseless mechanism.

Varieties

Before buying, you need to determine the desiredview. There are two basic designs: sliding and swinging. The canvas can be massive, blind paneled or glazed. As materials for production are MDF, plastic, wood, glass and aluminum.

Duplex door: installation rules

Preparation for the installation of the door includesthe dismantling of the old structure, in some cases requires a change of place for the future location. The door box can be purchased with the canvas or manufactured independently. Its dimensions should correspond to the existing space, the width should not exceed the thickness of the walls, if the box does not reach the external surfaces of the wall, the gaps can be closed with the help of the dobors. The height of the opening and the structure must also be adjusted in advance. When buying a loop, it is important to determine the appropriate side of the opening, this will prevent difficulties at the final stage of the work.

Cost

The double-leaf door is presented in an extensive priceassortment, the cost is greatly influenced by the material used. Designs made from precious woods are in the highest segment. It is much cheaper to manage options from MDF and chipboard. Also, the final price depends on the type of lock and the availability of additional items.

Economy-class options have won enoughpopularity, but their availability is achieved by various manufacturers' tricks used to reduce manufacturing costs. A double-faced door of this type has internal voids, so the amount of materials used and, as a consequence, the cost of the product decreases.

Also, the surface can be treated with an artificial coating. Often, the thin upper layer of wood is replaced with an artificial veneer, that is, a laminate coating.