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Technological Solutions

August 12, 2017 18:08

Mineral wool - the characteristics and all the " ins and outs " of the material

mineral wool and its most valuable characteristics

If you understand, then everything that is awarded by the nature of mineral wool - the characteristics of the same stone.At the time, our ancestors were building thick locks of this durable material and thus ensure themselves a comfortable living conditions, even in regions with harsh climates.The appearance of the stone "gun" builders spared from such an expensive and labor-intensive technology, because now you can get a box of fine buildings, enhanced new effective "fur".

To appreciate the power of such an additive, let us become better acquainted with its main advantages:

  • insulation properties. Insulation mineral wool has a very low coefficient corresponding 0,038-0,045 W / K × m, so her 10-cm layer of protection as well as a brick wall 117 cm thick (solid wood - 25.5 cm).
  • Noise properties. material perfectly absorbs the extra sounds, protecting the peace of households, its insulation coefficient - 0.95 (at the maximum rate - 1).
  • Fire protection. Perhaps this is the most valuable property of the insulator, because here fiasco all his worthy opponents (foam, etc..).It is able to operate normally under the influence of infernal temperatures (up to +1000 ° C), and rightly belongs to the "golden" group of non-combustible materials.
  • Water vapor permeability. Another important advantage is the characteristic of this heater - the ability to "breathe."The building is equipped with a stone "fur", provides residents a healthy indoor climate, to sustain that does not require mechanical "helpers."Water vapor permeability of mineral wool - 0,49-0,60 mg / (m × h × Pa).
  • natural. All of these properties of the mineral wool is pretty massive, and that's the last iron argument in its favor - the natural and pure origin.The material is made of stone and fire, even the fact that as the binder most often used phenol, does not spoil his impeccable reputation, because in the process of handling a harmful additive loses all his negative qualities.

There is another important characteristic, which determines the quality of the thermal insulation of buildings - mineral wool density.

As mineral wool density affects its characteristics?

is easy to see that the higher the figure the sample, the more it will cost to the consumer.The fact that the increased density of the mineral wool gives it additional properties:

  • not lose its original shape under its own weight;
  • not resist compression and deformation;
  • withstand the additional load on himself.

Insulator produce a density of 30-200 kg / m3.Water vapor permeability, thermal conductivity, and sound-absorbing properties of the mineral wool of different "density" is not actually different from each other, the main thing is the convenience and functionality of the further construction of the "puff".

Note that mineral wool density:

  • 30-50 kg / m3 - a soft "fuzz", available in bags or in rolls of mineral wool.It is used for thermal insulation of horizontal cavities in building constructions.Compressibility - 50%.
  • 75 kg kg / m3 - a semi-rigid type, is used for thermal insulation of horizontal parts of the house and technical facilities.Compressibility - 20%.
  • 125 kg / m3 - a sample of medium hardness for protection of vertical and horizontal parts of the house.Compressibility - 12%.
  • 150-175 kg / M3 rigid sheets for insulation of the roof and walls of the building.Compressibility - 2%.
  • 200 kg / m3 - plate increased strength, which operate under a load of 12 MPa.

What is the actual period of service of mineral wool?

Another important figure of merit - the durability of the insulator.The manufacturer claims the life of mineral wool - to 50 years.It is the honorable age of the building, so the heater can be confidently attributed to an elite group of "long-lived".

But keep in mind that the service life depends on the setting of the insulating mineral wool puff in home construction.Some of the insulator is already equipped with a protective anti-wind or steam insulating coating, but these additional obstacles should be provided independently for simple designs.

Remember that as soon as the insulation gets wet (or as they say builders - "sweat"), it will lose all its useful features, zakameneet, and in the future fibers will simply crumble.

For proper laying mineral wool should always provide the technical gap of 8-10 mm for the smooth evaporation of moisture from its "body."