Perlite as a heater - the characteristics, personal experience

A variety of thermal insulation materials on the market allows each samozastroyschiku choose the best option for themselves. Along with such common insulators as rockwool and polystyrene derivatives, are used extensively and Sediment insulation. But if the concrete block is used everywhere, the perlite is not so in demand, though not inferior to him in the parameters of heat saving and is characterized by a broad scope of application. Nevertheless, and Pearl have already tested craftsmen portal FORUMHOUSE.

Perlite - the origin, characteristics

Perlite - a derivative rock of volcanic rock, obtained by heat treatment of water-containing volcanic glass. As a result of calcination at high temperatures (1000-1150⁰S) breed swells, the particles take a spherical shape, the original volume is increased by more than tenfold. It turns non-toxic, light, versatile material that visually resembles a sand white or grayish color, no smell. It is widely used in many industries, the scope defines fraction (pellet size), the three most common are:

• 0-0,16 mm fraction - filtroperlit.
• The fraction of 0,16-1,25 mm - Construction perlite.
• Fraction 1,25-5 mm - Agroperlit.

In the construction industry perlite is used for the production of building materials (plates, blocks) and Dry mixtures as a filler, as well as independently as sound insulator and Sediment insulation. Efficiency pearlite due to its properties:

• Low thermal conductivity - 0,043-0,053 W / (m * C), the porosity of the perlite reaches 85%, and the air is the best insulator.
• Environmentally friendly - mineral source does not contain heavy metals, in the manufacture of an insulator is not used reagents and binder during operation and even in case of strong heating of the air is released toxic substances.
• Flame resistance - perlite used Walling as a material that does not support combustion (melting point of 1260⁰S).
• A wide range of acceptable temperatures - resistant material from -200 to + 900⁰S and used not only as a heater, but also as an insulator in cryogenic plants.
• Biostability - in pearlite not start rodents and insects, it is not affected by fungus and mold.
• Hygroscopicity - absorbs moisture in large quantities, but quickly gives it, without losing its properties.

UKSUS70 (FORUMHOUSE User):

75 M perlite poured into 0.5 L jar and filled with water, it is much imbibed and then floated. I put it in the bathroom and forgot, and his wife cleaned up in the closet. Yesterday accidentally remembered and looked - perlite dried up, the water is gone, and he again became fluffy and light. I think it can and should be used as a heater, a hundred years, he did not do anything, just to prepare the base under it should be well.

High heat-saving parameters from the perlite is not only due to the minimal thermal conductivity, but also because of the relatively low bulk density, it also depends on the brand and. Building perlite, mainly produced in three grades:

• M 75 - a density of 75 kg / mᶟ.
• 100 M - density 100 kg / mᶟ.
• M 150 - a density of 150 kg / mᶟ.

However, such a density sufficient to perlite was "fluid" - when falling asleep fills the void structure, whereas the lighter analogues This raises some difficulties.

The use of bulk

Optimal - use perlite bulk, as cold bridges can remain at stacking the bags. As the filling of insulation it is used in ceilings and walls - it poured between joists and voids formed either kolodtsevoy masonry or tight frame. In view of the volatility of perlite strongly dusty, so work better in a respirator. But accusations that it provokes asthma, almost from the first day, and sometimes appear at the forum, rather a "horror story" than a real danger.

GOR777 (FORUMHOUSE User):

We perlite third year working at first sprinkled in the mortar, then in plaster, ceiling and floor are now insulate. Yes, it is, of course, volatile and nasty, but so far, pah-pah, none no no asthma, but only worked with him four people directly and several more are close by.

To prevent loss of perlite through the ceiling, one of our craftsmen using geotextiles.

Tone (User FORUMHOUSE):

M 100 Perlite fall asleep on the floor of the first floor, it simplifies the use of "pie" overlap the bottom - only geotextiles. Perlite absorbs moisture and gives it without consequences, insulate it only from the warm room vapor barrier. Mice do not live in it, bulk, fills the cavity. Low thermal conductivity, non-flammable.

However, it should be borne in mind that the underground - and dry insulated expanded clay on the plastic film, so the moisture sucked from below the overlap is not threatened.

When attic floor insulation and used more steam.

KitovAV:

I cake from bottom to top as follows: a vapor barrier (foil polyethylene foam), further carrier beams from overlapping and the bars on the board, after geotextiles 120 microns, perlite 25cm. Any mixtures not sprinkled, no watering, I believe that in what is, and on top of the same geotextile.

A year later, it became necessary to build the ducts in the layer of insulation, the autopsy showed pristine condition throughout the area, "nowhere not dusty and not blown out." Filling craftsman advises to carry out necessarily in a respirator and protective glasses snugly (ski type).

When the mass of perlite advantages - not the cheapest option, and its use is economically justified regions where it is produced, since the delivery significantly increases the already not very budget price. But guaranteed no formaldehyde and fire, so do not flame-resistant protective layer.

On the other species heat insulator - Article about the choice of insulation for private houses. The possibility of using perlite as a filler in the material is considered of warm plaster. Also, perlite can be replaced with expanded clay backfill in dry screed.

Discuss the article and read other materials devoted to country life you can on the websiteFORUMHOUSE.

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