Roller door

Roller door: Advantages and disadvantages of the roller mechanism


This roller door opening mechanism has its pros and cons, which can be summarized as follows:

Advantages of roller door

Can be used for any interior door, except when it is completely made of glass. The ability to open in both directions in relation to the doorway. In small rooms – makes it possible to use in confined spaces. Easy to operate, allows people with disabilities to use it. There is no sagging of the door leaves during their operation. Long service life. The ability to create systems that provide automatic operation. Lack of thresholds (for some models).


High cost in comparison with swing counterparts. Low level of protection against heat loss and low sound insulation. The possibility of using the wall surface in the direction of moving the door leaf decreases (installing furniture and household appliances, hanging decor elements, and decorating the room space). For doors with a large weight (solid wood, metal doors), the service life is significantly lower than when used with light materials. Not suitable for all types of interior decorated in a particular style.

How does a door equipped with a roller mechanism work?

In order to understand how the roller mechanism works, you need to figure out what it consists of. All types of roller mechanisms have two main elements: a Roller door placed on a specific structural element with holes for attachment to the door leaf. Guides along which the rollers move. Rollers mounted on a specific structural element (straight or complex plate) are attached to the door leaf, guides are mounted in the doorway.

The roller door leaf with fixed rollers is hung on the guides. With mechanical action directed to the side in relation to the doorway, the roller door rolls along with the guides, thereby opening the door. There are two ways to install the roller mechanism, they are: Suspension system, when the rollers move along the guide, which is located in the upper part of the doorway, and the door leaf is suspended. The rail system, when the rollers move along the guides located in the upper and lower (on the floor) parts of the doorway.

The roller door leaf is rigidly fixed. In addition to the main elements, door fixing devices, materials providing heat and sound insulation, as well as decorative elements covering the roller mechanism can be used in the design of the roller mechanism. The roller door mechanism can be equipped with doors of various types, such as accordion, compartment, cascade, and radius type. These can be single-leaf and multi-leaf structures.

Varieties of sliding doors

As it was already written above, doors of various types can be equipped with a roller mechanism, therefore, in order to understand how they work, it is necessary to consider all of them.

Accordion type

This type of door has a sliding-folding design, when, when the door leaf is moved to the side, its component parts are folded. Depending on the number of folding elements, doors of this type are also called “books”, in this case, two fragments are added. When talking about the “accordion” type – there are more than two folding elements. The folding elements of the door leaf are connected to each other by means of a hinge, which ensures their coupling. Doors of the “accordion” type are single and double leaf.

Coupe type

In this type of construction, the door leaf moves along the wall along the guides installed on this wall.

Type cascade

In this design, the door leaf consists of several component parts, of which one part is rigidly fixed, and the rest (one, two or three parts) move along their own, separate guides. Door opening occurs when all the parts are assembled on one side of the doorway, and closing occurs when the component parts are evenly placed along the doorway.

Radius doors

This type defines their shape, which has a certain radius corresponding to the radius of the wall along which they move. Structurally, these are doors of the coupe type, but of a more complex geometric shape.

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