Build Daily

Construction Materials

August 12, 2017 18:08

What is a universal heater you choose?


  • 1 Some properties of the foam
  • 2 Properties polystyrene
  • 3 How to perform insulation
    • 3.1 What should be done to improve the adhesion and interaction with glue

heating season begins With the onset of winter.Here and there comes a time to think about saving.And in order to really on energy costs were lower, as a rule, it is necessary to make insulation of external or internal walls and slopes.And again the question of what kind of material selected, or expanded polystyrene foam, which is better.Thermal insulation is carried out, and both of them, it all depends on the type of premises and operating loads.

that warm foam or polystyrene , a glance how hard.For an exact calculation, you can use tables thermal conductivity and other technical characteristics, such as density, thickness and flammability class.

Some properties of the foam

1. The thermal conductivity is 17 times less than that of bricks, namely (0,033- 0,037 W / m * K)
2. The density of 12-15 kg per cub

ic meter (grade 15), respectively, mark 30 is 25-35 kg per 1 cu.
3. The compressive strength of single plate ranges from 0.04 to 0.05 MPa.
4. The absorption of moisture is not more than 1% per day.
5. Temperature range minus 50 to plus 60 degrees Celsius.
6. Flammability foam common T2 \ D1 (moderately flammable, slightly flammable).

use of such easy and fairly inexpensive material does not constitute a special complex manipulations.Technical premises, agricultural buildings, warehouses and technical facilities of the building is just suitable for such material.Thermal insulation slabs in the attic or walls in the country will not be too time consuming.A low price and ease of installation is an advantage of the foam.Especially cutting sheets (500 \ 600 mm * 1000 1000 * 1000 \ 1200 mm, and other dimensions), 20,30,40,50,100 mm thick and more easily found on sale.

There are several disadvantages of such material, the toxicity of combustion and due to incorrect installation of the formation of mold on the walls, but rather a fungus.In Europe, the wall insulation does not make foam thickness of 3-4 mm, as the material is thicker at the fire on the facade highlights a lot of toxic gases.It is better to apply a screed on the insulation of attics and other enclosed spaces.

Irregularities in assembling, installing foam inside raw space can displace "dew point" inside, with mold growth is inevitable, there is no ventilation between the insulation.

Council;the selection of materials for insulation, pay special attention to the density and flammability class, because the foam during combustion emits toxic fumes.

Properties polystyrene

Such sheet insulation, as well as the foam has a uniform structure.For example, the brand Penoplex depending on the density and the class is divided into several grades: 31 (31 C), 35 and 45.

1. The durability of more than 50 years.
2. Compressive strength 0.5 MPa.Up to 18 000 kg per 1 sq.m.
3. extruded material density is high enough, than conventional granular (foam) and is 30-200 kg per cubic meters.
4. The absorption of moisture to 0.4-0.5% per day.
5. One of the lowest thermal conductivity performance (0.027 W / mK)
6. Temperature mode of use -50 to + 75 ° C.
7. Flammability G1, G2, G3, G4, NG (NG - non-flammable).

Applications such diverse material.Thermal insulation of foundations and pavings around the house that will prevent freezing swelling soils and grounds.Soundproof walls and ceilings.Thermal insulation of facades of houses.In recent years, is often used to insulate the floor in front of the screed.Cutting sheets, for example, the brand Penoplex width of 600 mm and length 1200 \ 2400 mm.Thickness 30, 40, 60, 80 and 100 mm.For the qualified teams do not make much effort to insulate a house or apartment in a very short period of time.Thus saving you a lot of money for many years to come.

If we compare the foam and extruded polystyrene, it turns out that seems to be no difference between them.Yes one basis, but the production technology and characteristics for different densities. A main difference from Styrofoam extruded polystyrene, is the area of ​​application.Polystyrene can be used in thermal insulation of the basement of the building.Suffice EPS boards 20-30 mm thick insulation for walls and foam need to install 50 mm thick.

The disadvantages include the destruction of polystyrene in contact with complex hydrocarbons such as siding.Destroyed by UV light when using unencrypted.When heated at 25 ° C in 1 m3 of material will contain 104 micrograms of styrene, is very much.

And of course facades with a high degree of exploitation require denser material, for reinforcing foam polystyrene and the second on the mechanical impact showed the best results, of course the choice of materials depends entirely on the characteristics of the insulated surfaces and types of buildings.For the cottage it is suitable as the best option.

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How to perform insulation

Choosing insulation on a fairly large markets.A variety of proposals from mineral wool, high density extruded polystyrene to . What to choose?What kind of insulation technology, adhesive brand and mesh for reinforcement to buy?There are many questions, but the answer is one.What exactly it is required to insulate?Take, as an example, the facade.Installation of polystyrene plates suitable for this purpose is better.

on mineral wool consumption mix to the shelter will be 15% more than styrofoam.Since the first base layer is deposited on a relatively uneven surface, and a plane trim wool electro impossible, unlike polystyrene plates.On the slab polystyrene extrusion and turn our attention to you.We decompose the entire process on the shelves.

Properties slabs specification

  1. density on compression at 10% deformation, not less than 0.25 MPa.
  2. on static bending strength 0.4-0.7 MPa.
  3. water absorption of 0.1% per day of the volume.
  4. Resistance to fire (flammability class) G 1, B 2, D 3, RP 1.
  5. thermal conductivity at +25 Celsius W \ (m ° C) - 0,028.
  6. ability to pass pairs M \ (mh Pa) 0.018.
  7. operation mode -50 to + 75 ° C.

Some manufacturers Epps

Manufacturers Brands Technonikol, URSA, Primaplex, Penoplex, IZOBOX, Polispen produce modified extrusion plate pretty good quality.Applications for heat and sound insulation of floors, roofs and basements suitable plates with higher strength grade SPB-S 35.45.Lower grade 30 well proven in the device "warm floor".
size by manufacturers of such materials on the market is approximately the same, 600 mm and 1200 mm long.There are plates of different sizes and have the brand Technonikol, CARBON ECO SP 2360 * 580 * 100 mm.With or without perforations, with locks and without them.Choosing large.

What should be done to improve the adhesion and interaction with glue

1.Shkurit plate sandpaper over the entire plane, in general, cause scratches for improved adhesion of the glue.
2. Remove dust and residues solutions with walls and slopes.
3. Prime the surface of the deep penetration primer for facade work.
4. Gaugeable plumb walls, uneven areas leveled using plaster or adhesive.
5. Make sure the temperature of the entire period of installation, mode of less than 8 degrees Celsius is not valid, as well as higher than 30, and not desirable.

stopped the choice on sheets of polystyrene foam 50 mm thick, it should be borne in mind that an overlap on the corners will be more than 50 mm, taking into account the thickness of the adhesive.Therefore, to make the layout should be adjusted to the adhesive layer and an overlap.And it is better to choose the material with locks for easy installation and construction of the fortress.


Adhesive for foamed polystyrene boards should select several key criteria.The elasticity after drying, the presence of microfibers temperature operation (frost, heat-insulating characteristics) and high quality adhesion to polystyrene foam extrusion plates.
Council;Apply the adhesive evenly over the entire plane of the plate, and has no place in the form of small dimes.

Adjustment of plates, another type

mounting plates with locks is better to start to mount on both sides of the angles, and the angle of the device facilitates measurements.Care should be taken and for "extensibility" joints, angles of the first row of plates should not coincide with the corners of the next series of plates.And so to the top of the wall or corner.A plant or fungus umbrellas (dowels fastening), must comply with the technology, namely, 7 pcs.At the corners 8-9.

When plinth wall panels installation can be performed on the bitumen, the melting temperature of the polystyrene allows to make such work quickly, plus bitumen waterproofing and adhesive will, and will not allow moisture to penetrate the base, "dew point" will go out.The thermal insulation of residential, attic mounted 100 mm material, vapor barrier between the two membranes.Instead, the adhesive can be applied assembly foam, an example of how to do it.

important;getting glue on the seams between the plates, is unacceptable!

After installing the panels can proceed to the next stage of work, reinforcing mesh and application of decorative finishing layer of the façade.Design, which will please you for many years.

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