Pros and cons of application + Video

Pros and cons of application + Video Basalt cardboard, otherwise basalt mats are the latest type of fire retardant material for insulation in thick sheets. It is used in the manufacture of stoves, fireplaces, baths, and so on. Basalt cardboard has replaced asbestos material. Basalt contains practically no harmful substances, such as phenol-formadelgide, etc.

Basalt mats consist of absolutely pure and harmless material.

General information


At the base of the cardboard there is a very thin fiber of basalt and bentonite clay for binding refractory material. Basalt cardboard differs from cotton wool in that it is several times denser and much thinner. The difference is that bentonite clay is often used in bonding basalt mats, which does not harm, but even vice versa. And no harmful fumes occur from the cardboard when heated.

Basalt fiber is produced from natural, mountainous material from a volcano - basalt.

Basalt is melted and passed through an extruder. This is a device with holes through which basalt is pressed. From the inside, hot material solidifies with the help of cold air. Then it is tamped and cut.

Types of basalt cardboard

  1. Foiled basalt cardboard.

    This material is covered with a layer of foil on one side in order to increase its heat saving properties. The foil layer creates a reflection of thermal energy, and makes the room more warm, not the walls. The disadvantage of foil-clad basalt cardboard is how the foil is attached to the cardboard. There are two ways: using resins or wire.

    If it is a wire, then the material is just as safe, if it is resin, then you need to remember that when the material is heated, harmful substances will begin to evaporate into the air.

  2. Pros and cons of application + Video Plain basalt cardboard. It consists only of basalt fiber and bentonite clay. The advantage is vapor permeability.
  3. Needle-punched Basalt mat. The only difference from the usual one is the way of weaving the fibers.

    The fibers are held together with basalt, no clay and no resins. Only needles made of basalt. Due to this, such a material becomes very prickly and inconvenient to use. The needles can even pierce the gloves and dig into the skin, leaving splinters behind. But if you follow the correct execution technique, then everything will be convenient.

    Due to its value and qualities, it is a very popular material.

What is the difference between basalt cardboard and mineral wool:

  1. Density. Cotton wool has a less dense structure.
  2. Formadelguides are often used to hold the threads together in cotton wool, which, when evaporated, become very toxic. In cardboard, the binder is either bentonite or basalt - these are pure, natural materials.

Properties and characteristics

  • High level of heat and sound insulation.
  • It is not flammable, which means fires are not so bad.
  • Small level of hygroscopicity. Basalt cardboard does not take moisture from the indoor air; this is very important for baths and saunas.

Unlike asbestos cardboard, which has a maximum temperature of 400 degrees, basalt has a limit of 700 degrees.

Does not give in to decay. Resistant to moisture, mold, insects and rodents.

  • Service life at least 50 years.
  • Easy to cut, even with an ordinary construction knife.
  • Easily deformable.

  • Basalt cardboard has a minimum thickness of 6-12 mm, very economical for the room. Other heaters have a thickness of up to 10 centimeters.


Basalt building material is used to insulate furnaces, boilers, dampers and doors from chimneys. They are indispensable for laying a heat-resistant layer between floors and ovens, chimneys and roofs - in those places where fire protection and the density of basalt cardboard are needed.

In a residential case, mats are used to cover concrete, creating protection from unnecessary noise, as well as fire.

It is also suitable for cladding loggias, balconies and even doors. Basalt cardboard is also used to insulate air ducts in ventilation and water supply systems.

It is very common that basalt mats are used as a noise absorbing material. Often they are the ones who separate the gypsum plasterboard layers for slabs. It is also used for the construction of water floors.

The price for basalt cardboard depends on the type of material. Foil cardboard will come out 20 percent more expensive than ordinary cardboard. And also the price depends on the size and thickness of the material.

( 3 marks, average 5 of 5 )