Stone wool - characteristics and reviews. Density of rock wool

The latest developments in modern construction make it possible to achieve the best results and to obtain a universal material that can protect against adverse external environmental influences. One of these is stone basalt wool. About this more in detail.

General description of the specified product

This is quite a popular material. It is obtained as a result of pressing of stone basalt rocks and hydrophobic binding additives. This process is not so complicated. Stone, or basalt, cotton wool is a durable, fire-resistant, wear-resistant material. It is used in the construction of residential and public buildings, as well as children's pre-school institutions. The material has the highest performance characteristics and is carried out according to the quality standard according to GOST.

Technical description

Stone wool is a type of mineral wool. The main advantage of this insulation is that it is environmentally friendly material, since it is made from molten rocks of gabbro-basalt. Even in ancient times, local residents noticed the eruption of a volcano, in the remains of which were found strong and long fibers. Based on this, later invented basalt cotton wool. This is reliable data.

The components of this insulation (stone wool) are various types of binders. They fasten the fibers together. These include synthetic, bitumen, composite binders (carbamide resins and bentonite clay). These components give the product the desired density and shape.

Properties and characteristics of stone wool

In this regard, there are many interesting things. Namely:

• The main and basic property is the incombustibility of the material. The degree of this parameter provides a barrier that is capable of withstanding rather significant temperatures - up to 1000 ° C. This is an absolute class of fire safety. Therefore, in difficult situations stone wool will create a barrier that is able to protect the structure from further passage of fire.
• The coefficient of thermal conductivity of the material is sufficiently small. Its value lies in the range from 0.032 to 0.048 watts per meter. This allows the material to keep warm in cold weather and keep the room cool in the summer. This is achieved by a chaotic arrangement of the fibers in the basalt insulation.
• Strength characteristics of the material help it resist deformations during compression and stretching. Stone mineral wool is capable of withstanding enormous loads. Experience and research showed the compressive strength of the material - from 5 to 80 kPa. Thus, it is proved that the material will last for many years, without changing the size and shape.
• The acoustic properties of the heater allow it to absorb noise, reduce the reverberation time. This helps to protect from sound waves not only the walls of one isolated room, but also adjacent rooms.
• Shrinkage of stone wool is minimal (about 5%). This also ensures the durability of the material and does not allow the appearance of cold bridges in the niches of the frame.
• Water repellent composition of stone wool (with the addition of charge or limestone) has a hydrophobic property. Therefore, this insulation is good for rooms with high humidity (baths or saunas). The water absorption is about 2%
• Stone wool has an absolute vapor permeability. The moisture on the surface of the heater does not form a condensate, because it does not get wet and keeps the heat. From humid rooms, air is removed without any obstacles. The vapor permeability of this material is about 0.3 mg.
• The resistance of stone wool to an aggressive environment, as experience shows, is significant. It is not susceptible to decay, mold or fungus, and small rodents are not afraid of it, because it is quite a hard material. In contact with the metal on the stone wool does not remain traces of rust. Therefore, this insulation is used in industrial and technical facilities that come into contact with corrosive media.
• Ecological compatibility. This wool is made from natural mineral raw materials. This is important. In production, basalt fiber is combined with formaldehyde resin, which makes the material dense. However, harmful resin impurities are neutralized during the production process. Stone basalt cotton wool does not cause allergies. Its fibers do not irritate the skin.
• The density of rock wool is quite high (from 30 to 100 kg / m³). This property allows the material to remain stiff and resistant to deformation.

• This heater is easy to transport. This material is produced mainly in slabs. On the construction site the product is delivered packed in polyethylene. This also simplifies its storage.

Application

Stone wool - a fairly universal insulation, and its application is possible in various areas of construction. This material is used in the following cases:

• In hinged ventilated facades.
• For insulation of the exterior and interior walls of the building.
• In the annexes to the buildings, balconies and loggias.
• For insulation of the roof, pipeline, ceilings.
• In the walls of various materials: brick, concrete, stone, wood, metal.
• For insulation of floors and floors.
• For the isolation of fire hazardous objects, furnaces, pipelines.

Mounting of stone wool

This process is quite simple. There are soft, hard and semi-rigid slabs of stone wool. This simplifies the installation of this material - it does not require special skills, specialists, as well as the use of complex tools or equipment. Stone wool can be glued with a special building glue or attached with dowels. After this, the vapor barrier layer is laid, then you can proceed to the finish.

Tip

When working with this material, it is best to use a cotton-gauze dressing or a respiratory mask to avoid dust entering the respiratory tract.

The main criteria for the acquisition of this material

Do not forget that when buying this product, you should carefully review the quality certificate and check that the formaldehyde content indicators are minimal. Known manufacturers of basalt cotton wool tend to ensure that the presence of harmful impurities in this material was at the lowest level. Therefore, it is better to buy this insulation in companies that have already proven themselves in the construction market.

conclusions

Basalt, or stone, cotton wool is a product obtained by melting rocks with the addition of binding compounds. This insulation is an environmentally friendly material, safe for human health and the environment. However, it includes formaldehyde and phenol. In the process of melt these additives evaporate from the general composition of the insulation. Stone wool, reviews about which are positive, is an excellent material and is popular in the construction and repair sector.