To make the indoor climate as comfortable as possible for living, Special attention attention should be paid to high-quality thermal insulation of enclosing structures. A poorly insulated floor can cause significant heat loss and the formation of condensation, which is an ideal environment for the growth of fungi and mold. Today, expanded polystyrene for underfloor heating is considered one of the most modern and reliable methods of thermal insulation.
Thermal insulator good quality must have a number of the following qualities:
- Ecological cleanliness,
- Resistance to moisture,
- Ease of installation,
- Maximum seamlessness,
- Resistance to temperature changes,
- High-quality sound insulation,
- High resistance to compression and cracking,
- Non-flammability.
Modern insulation materials can be divided into two groups:
- Insulation materials consisting of mineral fibers (glass wool and mineral wool). They are manufactured in the form of mats, slabs and rolls.
- Insulation materials consisting of foam materials (foam plastic, polyurethane foam, polypropylene foam, polyethylene foam and polystyrene for heated floors). They are manufactured in the form of panels, blocks and slabs.
Polystyrene underfloor heating system - brief description
Expanded polystyrene for heated floors, in most cases, is colored slabs with a perfectly smooth surface, which when broken look like foam rubber - with many small pores. This material is a type of foam that was obtained by combining carbon and hydrogen atoms. It is obtained by foaming granular extruded material using volatile petroleum products. To obtain the desired effect, water vapor is used. Thanks to this, it is possible to produce a lightweight substance with a cellular structure, high strength, as well as excellent thermal and waterproofing properties.
Extruded polystyrene foam for underfloor heating is simply an excellent material for thermal insulation.
It has high strength and heat retention, its chemical and physical qualities remain unchanged during temperature fluctuations from -180 to 180 °C. Naturally, it provides excellent thermal insulation of the floor (due to the fact that it consists of almost nothing but air bubbles). This material is characterized by a high coefficient of moisture resistance, due to which polystyrene slabs for heated floors do not swell and do not absorb excess moisture. When using this material, it is necessary to lay an additional fireproof layer (for example, aluminum foil).
Polystyrene heated floor - installation features
- Before laying the insulation, it is necessary to carry out all the necessary preparatory work, which include leveling the floor using cement screed.
- To achieve as much as possible high-quality sound insulation A special thermoacoustic film should be spread over the cement.
- After this, a polystyrene foam plate for a warm floor is laid, the edges of which must be joined so that it is in a free position.
- To ensure waterproofing of the floor, polystyrene foam must be covered with a waterproofing film. For these purposes, it is recommended to choose a film with a thickness of about 0.2 mm or more, since material that is too thin will not be very effective. Where the edges of the material join each other, the film must be overlapped so that the overlap width is at least 10 cm.
- To reliably strengthen the structure, an additional layer of cement screed should be applied with a height of 5 cm.
- The final stage is the installation of any flooring, for example, parquet or linoleum.
How to choose polystyrene foam for a warm water floor?
If it is necessary to insulate the floor, then polystyrene foam from almost any manufacturer is perfect for this purpose. On modern market building materials a large assortment of fairly high-quality materials is presented, among which the greatest demand is for extruded polystyrene foam for heated floors of the types “Penoplex 31 Standard”, “Penoplex 31”, “Penoplex 35 Standard”, “Penoplex 35”, “Technoplex 35 Standard”, “Technoplex 35” and "Termite 35". For floors, shallow foundations, fire tanks and swimming pools, Penoplex 31 is most often used.
As for expanded polystyrene for heated floors “Penoplex 35”, this material has high fire resistance. For this reason, it is often used in the construction of many enclosing structures (roofing, flooring, walls). "Technoplex" is able to maintain its performance characteristics at temperature changes from -50 to +75 ° C, which allows it to be used for insulating loggias, balconies, plaster facades or roofs. “Termite” - expanded polystyrene for heated floors, the price of which is slightly higher than others, has the lowest water absorption rate, due to which it is successfully used when laying foundations in swampy areas.
In addition to extruded polystyrene foam, there are roll and sheet cork, which are also often used in construction. To prevent overheating of the room, you should choose foil-coated polystyrene foam for heated floors.
It would be completely unnecessary to say that polystyrene foam is popular as insulation. They insulate walls outside and inside, make warm attics and ceilings. But is foam plastic suitable for flooring? After all, as you know, this material is afraid of mechanical damage. Let's figure it out together.
Is it necessary to insulate the floor covering, especially if you intend to install a “warm floor” system? Of course, it is necessary - without insulation you will give up to 20% of the heat to the underground space. This means extra financial costs and lower heating efficiency. By the way, you can choose the most ordinary foam plastic for a warm floor, but it is much easier to work with marked material or profile foam. Profile material It has special convexities, between which it is very convenient to lay the system.
Owners country houses or cottages, very often you have to deal with the insulation of wooden floors. Wood itself retains heat well, but it has the unpleasant property of drying out, forming cracks through which cold air passes. Before insulating your floor with polystyrene foam, be sure to read this article - you will find a lot of useful information.
To begin with, you should carry out standard work - clean the surface of debris, seal the cracks in the base. Insulation is impossible without a waterproofing layer - although polystyrene foam is not afraid of moisture, there are also wooden parts. If these are strips of material, for example, plastic film, be sure to overlap at least 10 cm and carefully seal the joints with construction tape. Experts recommend using improved materials instead of conventional polyethylene film, which are made from a special water-repellent base and, moreover, also have the properties of reflecting heat rays.
Then the frame is made from wooden logs, in the intervals between which it will be located thermal insulation material. This gap can be no more than 60 cm for a plank floor and 40 cm for subsequent installation of laminate or parquet. Thanks to the presence of logs, subsequent loads are evenly distributed over the entire frame, which eliminates subsidence of the floor even under heavy furnishings. Between the joists, foam plastic can be laid in slabs, or poured in the form of bulk granules, although the first option is preferable. Depending on the quality of the base, you should purchase slabs of different thicknesses. The thickness of the foam for insulating a cold ground floor should be at least 20 cm.
There should be no gaps left between the plates - they should be blown out polyurethane foam. Don’t forget to lay another layer of waterproofing on top of the foam, which will protect the floor from moisture from above. Afterwards, it is recommended to make another layer of sheathing so that a ventilated space remains, and OSB slabs or boards are laid on top of the sheathing.
How to insulate a floor with foam plastic if you plan to make a screed? The insulation process is somewhat similar to the previous description of thermal insulation - we again make a multi-layer “pie” from layers of waterproofing, insulation and the screed itself. However, elements such as reinforcing mesh and damping tape are also added. First things first.
If the screed is made on a soil base, then first the soil thickness of at least 15 cm is removed. If you intend to make a bedding from expanded clay, then you should go even deeper, taking into account the layer of bedding. The soil surface should be leveled and compacted - there should be no drops, holes, or bumps.
After leveling, waterproofing is laid. If this polyethylene film, then its density must be at least 150 microns. The film strips must be joined, as in the previous version, with a large overlap and glued with construction tape.
Then, a damper tape is laid along the entire perimeter of the room at the junction of the walls and the screed - it will preserve the necessary reserve of free space, which is necessary for thermal expansion of the floor, and will avoid the appearance of cracks due to internal pressure.
Then the first layer of screed is poured, the thickness of which must be at least 6 cm. The screed is completely standard in its composition - four sands for one part of cement. Leveling the batch subfloor, immediately lay the insulation boards on the composition, trying to maintain a checkerboard pattern. After installation, give the floor at least a day to dry and harden. This step should be skipped if the floor is insulated with foam plastic on top of a concrete base under a new screed.
The next stage is finishing screed. Be sure to lay beacons so that it is convenient to correct unevenness using the rule. During pouring cement-sand composition reinforcing material is inserted into the screed metal grid, which will protect the floor from cracks and breaks and help distribute point loads. The thickness of the top layer is at least 5 cm. After the screed has dried a little, sagging and other irregularities are usually removed. When the floor is completely dry, all that remains is to decide decorative coating.
Much attention is paid to the process of organizing insulation these days, since it determines how energy-intensive a residential or domestic space will be.
Indeed, now they pay great attention to preserving heat indoors, since heating resources (wood, coal, gas and electricity) are expensive, so it is customary to insulate your house or apartment and create maximum efficiency work heating elements. Insulation based on polystyrene and mineral wool, including extruded polystyrene foam for heated floors.
Expanded polystyrene for heated floors, its characteristics and types
Warm floor is modern look heating system, which many owners dream of and strive to implement in their living spaces. This heating system can be either primary or additional to centralized heating.
Warm floors do not take up any space, since they are located under the finishing cover, but their installation causes a lot of difficulty, since you have to fill in an additional screed, which incurs additional costs, reduces the height of the room and places an additional load on the floor.
People don't always undertake to organize this system heating due to the above disadvantages, but in last years Many builders began to solve this problem, thanks to the appearance on the market of a special insulation - polystyrene foam for heated floors.
This material is light in weight, small in thickness (2-5 cm), and is also easy and quick to install.
Characteristics of expanded polystyrene
The material will withstand temperatures up to + 80 degrees Expanded polystyrene is excellent for creating the initial layer of a heated floor “pie”, since it has smooth surface, which goes well with the rough ceiling. It has a slightly noticeable porous structure. Like any other building material, polystyrene foam has its own specific characteristics:
- It can be used and installed at absolutely any temperature: from -65 to +80°C.
- The bubble structure of the material is capable of providing excellent thermal insulation properties, having a thermal conductivity of 0.036 - 0.044 W/m2.
- A consequence of the porous air-filled structure is the low weight of the slab.
- The material can also perform 2 functions - waterproofing, since it does not absorb moisture at all.
- Products made from polystyrene foam have good noise insulation. A 2 cm layer of slab can reduce the noise level by 20 dB.
- Polystyrene has self-extinguishing properties and has a fairly low flammability, but during the smoldering process the material releases a number of harmful substances that threaten human health.
You should know that expanded polystyrene is a direct relative of polystyrene foam, but has a higher density (3-4 times) and a smaller bubble structure, which indicates a high cost.
It should be remembered that in terms of thermal conductivity, 10 cm of polystyrene foam corresponds to 1 m brickwork and 37.5 cm of wood.
Types of expanded polystyrene
Unpressed panels are brittle and breakable Many polystyrene foam manufacturers use different technologies production, which leads to the creation of material different types. Today there are the following types:
- Unpressed polystyrene foam (EPS, PSB-S). The drying process of granules is carried out twice. Once before foaming, and 2 times after this event. The material is then heated and poured into molds. This is the most common version of the polystyrene foam manufacturing process and has lowest cost, but is also the most fragile material.
- Extruded (EPS, XPS). This material production is characterized by a production process that takes place under high pressure in a certain container-form into which a special reagent for foaming is introduced. After which the entire mass is squeezed out through an extruder into a slab shape and dried.
- Pressed polystyrene (PS-1, PS-4) has the same thermal conductivity as extruded polystyrene, but production processes are different.
- The autoclave production method is no different from extrusion; only when foaming granules, manufacturing companies use an autoclave. This material is not used for thermal insulation.
You should know that during the production process, a special additive is added to expanded polystyrene, which contains a fire retardant substance, which adds fire safety to the building material. The use of such an additive is regulated by GOST - 15588-86.
How to select the material yourself?
Every owner strives to ensure that the most best material, this also applies to polystyrene foam. When choosing a material for a heated floor, you should pay attention to:
- Product color. It should be bright over the entire surface.
- There should be no smell. Strong smell from the material corresponds to low quality and incorrect production process.
- The edges of the product must be dense and not crumble.
- A smooth surface without any dents or bulges.
- The granules are the same size.
When choosing a material, you can conduct a small experiment yourself: you need to break one slab and analyze the location of the split.
If the slab cracks not clearly at the break point, but in a wave (the granules remain intact), this means that the firing process was performed incorrectly, and such material should not be purchased. For information on choosing insulation for a heated floor, watch this video:
Features of installing polystyrene foam under heated floors
The insulation boards must be tightly adjacent to each other
Warm floors do not have to be installed on a concrete screed. Support structure maybe wood flooring, the main thing is that the polystyrene foam boards are laid tightly to each other.
Before laying insulation boards, it is necessary to thoroughly clean the covering from debris and eliminate all unevenness.
It may be necessary to repair the rough screed using a special mixture, sealing all cracks and damage.
When you are sure that the surface is smooth and clean, you can begin installing the polystyrene foam boards. At the same time, each unit of the product should not stick out or move. All insulating flooring must fit snugly against the walls.
A number of manufacturers of polystyrene products create boards with grooves and tenons. When installing such insulation, you need to pay attention to ensure that the connecting elements are not damaged.
Special slabs for heated floors have not only joint grooves, but also limiters for laying pipes or electrical cables.
Typically, pairs of limiters are located at a distance of 3-8 cm from each other, thereby allowing you to arbitrarily choose the distance between the heating elements.
After laying the cable or pipes between the limiters, you should do a test run and cover the heating elements with waterproofing film (with a water-heated floor).
A light covering such as parquet or laminate can be laid directly on top of polystyrene foam, and roll materials(linoleum, carpet) and tiles should be laid on sheet materials plywood or OSB board, which is laid over the insulation.
In rooms with high levels of humidity, self-leveling mixtures are used, which are poured onto the insulation, at the same level with gaps for laying pipes.
One example of flooring can be seen from the diagram below.
From this article, each owner will be able to highlight information about choosing polystyrene foam for heated floors. It is worth deciding on your product option, taking into account all the disadvantages and advantages. The choice of material should be made only independently.
Expanded polystyrene was first produced in 1928. And in the Soviet Union it began to be produced in 1939 and was initially used as a heat-insulating material, which is also water-repellent. Periodically they forgot about him, then again he was in favor. Nowadays this material is popular again.
First you need to understand what expanded polystyrene is - it is foamed polystyrene. It is manufactured using special equipment, and quite simply, and this building material itself is a cheap and affordable heat-insulating material.
Expanded polystyrene is often called polystyrene. Essentially, these are the same expanded polystyrene materials, almost the same physical and chemical properties, but there are still differences.
All these building materials are insulation materials that are actively used in construction or renovation. But let's look at each material separately, understanding that there is a difference between them. Expanded polystyrene (this material is often called polystyrene foam) is not the official name. What is polystyrene foam? It is the same polystyrene material as penoplex. Expanded polystyrene or foam plastic is foamed polystyrene, but without the use of compression. In other words, the cells inside the material remain large and the density is low. The material is very fragile and breaks easily in your hands. But it is very light and convenient and is needed for work - it can be easily cut with a knife. An excellent heat insulator, but this material is not suitable for floor insulation. It is often used during transportation fragile materials – household appliances, glass, mirrors, as well as when transporting over long distances. Available in plate or crumb form.
Recently, a new product has appeared on sale - foil-coated polystyrene foam. This is the same foam, but covered with metal foil. It is produced in the form of a roll 5 m long, 1 m wide and about 3 cm thick. The price is set for 1 m2, useful for installing a water heated floor. The metal foil backing works to shield the heat that is radiated from the screed of a hydronic floor heating system.
Advantages of foil polystyrene foam:
- Thermal insulator;
- Heat-resistant to temperature changes;
- Excellent sound insulator;
- Non-toxic when heated;
- Moisture resistant;
- Not subject to rotting.
A roll of foiled polystyrene foam is spread over the entire area of the room and secured together with sealant or a special adhesive foil tape. This material has an excellent ability to save energy (thermal, electrical). The fact is that 3 cm thick polystyrene foam replaces 65 cm of brickwork or 125 cm of concrete for thermal insulation.
Foam or polystyrene for the floor: making a choice
It is clear that heated floors are when the heating system is hidden under the floor. It should be noted that this system is not a new invention of our designers and builders. Back in the days Ancient Rome This heating system was very popular. But for many centuries it was forgotten and now it is remembered.
This floor heating system is very economical and comfortable for humans. Since the highest air temperature is located near the floor surface, and the coldest air accumulates near the ceiling. With the current heating system - radiators - the distribution of air temperature in the room is completely different. With a radiator heating system, air from high temperature is located under the ceiling, and the coldest is near the floor. If the room is still high, then even with good heating, the air near the floor will always be cool.
This is especially true for private houses or first-floor apartments, which are located immediately above cold and damp basements.
Heated floors can be electric or water. The coolant in the water tank is hot water, which flows through flexible pipes under the floor and heats the floor itself and the room. The source of water heating can be a gas boiler. Such floors are most often installed in private houses, since in apartments multi-storey buildings the installation of such a system is extremely problematic due to the possible burst of pipes under the floor and further flooding of neighbors or the basement.
Installation technology for water heated floors:
- Floor cleaning – removal of old floor covering, removal of old screed;
- Installation of rough screed and leveling the floor with cement-sand mortar;
- After the rough screed has dried, lay the waterproofing film;
- Laying around the perimeter of the room damper tape- This is a heat insulator, and it compensates for thermal expansion.
Installation is simple, since the tape looks like wide tape and is simply glued on. Installation of heat insulator on bitumen mastic it is necessary to make polystyrene foam boards or you can choose foil polystyrene foam. Next, the flexible heating pipes need to be secured using special clips. The heating system must be connected to the boiler and the system must be tested - start up hot water into the system. The top of the pipes must be filled with a special screed for heated floors. Ready cement mixture can be found in a special building materials store, and according to the instructions, prepare a cement screed. The thickness of the cement screed must be at least 4 cm. The screed will be ready only after 1 month. Then you can glue the plywood sheets, ceramic tiles or lay a special laminate for heated floors. Most often, foam plastic slabs are produced in sizes 800x700x45. It should be noted that placing mats or carpet on top is not recommended as the temperature of the floor will decrease and the efficiency of the floor will be low.
Laying heated floors on penoplex
Penoplex is a rigid foam plastic with grooves, but only denser and very hard. The industry produces penoplex in the form of sheets that are orange in color. Penoplex flooring is good when installing an electric heated floor.
Electric heated floor installation technology:
- Rough screed;
- Insulation (penoplex);
- Installation of an electric heating cable and fixing it to the floor;
- Connecting the cable to the power supply system;
- Heating system testing;
- Filling with special cement mortar for heated floors;
- Laying ceramic tiles.
It should be noted that electric underfloor heating can be installed not only in private houses, but also in apartments on any floors, if, of course, the power of the electric cable that enters the apartment allows. When installing a warm electric floor, it is necessary to make calculations to purchase the necessary heating cables. The most the best option– get advice from specialists and entrust them with the installation as well.
Economical extruded polystyrene foam for heated floors
Extruded polystyrene foam (EPS or extruder) is a new product among floor insulation materials. What is the difference between extruded polystyrene foam, it is fragile and cannot serve as a sound insulator. This type of polystyrene foam is popular, especially with bosses to better secure pipes or cables. After installing the cable, it is optimal solution with decorative coating and installation of floor tiles. New products on the heat insulator market are technoplex and penopremium.
Penoplex is the same foamed polystyrene, but pressed. It has greater density and stability, and has smaller cells than expanded polystyrene. And they release it in the form of sheets of saturated orange color. In fact, this color is the main visual difference between polystyrene foam and penoplex.
Use of polystyrene foam for heated floors (video)
Thermal insulators have recently entered our lives, but these days, they have become an integral part of technology in construction and repair. Using them is very beneficial.
Many would dream of installing a heated floor in their home, but are deterred by the high cost of the electric one and the laboriousness of installing the water version. The work on its production is technologically complex, associated with dust, dirt and considerable costs. And besides, it happens that they cannot bear the concrete screed load-bearing floors or the ceiling height is not enough. But there is a modern alternative to heavy concrete method fillings are polystyrene foam for heated floors:
- it is light;
- small thickness;
- it's much easier to install.
Let's look into everything thoroughly.
Polystyrene is not some kind of innovation. It was first synthesized from styrene in 1929. In the USSR, this material has been produced since 1965. It can be found everywhere: in refrigerators, televisions, disposable dishes, house construction and packaging materials.
Expanded polystyrene for heated floors - brief description
Expanded polystyrene boards have a smooth surface.On the cut you can see many small pores similar to foam rubber.
The material is simply ideal as a basis for heated floors.
Let's look at the main characteristics and properties of polystyrene foam, which make it possible to use this material for laying heated floors:
- Operating temperature indicators with which it can work are from -60 to +85°C. (maximum values -180 +180°С).
- The structure with air bubbles provides excellent thermal insulation (air content – 97 – 98%). Thermal conductivity = 0.037 – 0.043 W/m2.
- As a result of the porous structure, and low weight.
- At the same time, the slab will also act as waterproofing, since the material does not absorb moisture.
- Soundproofing properties. A layer of 3 cm reduces the noise level by 25 dB.
- Flammability. The spontaneous combustion threshold of polystyrene is 2 times lower than that of wood. In addition, it releases less thermal energy. Self-extinguishing varieties of polystyrene foam do indeed stop burning if the exposure to the flame stops, but due to the gases used for their production, when melted, these varieties emit more substances that are toxic to humans.
A 12 cm layer of polystyrene foam corresponds to 45 cm of wood and 1.2 m of brick!
Expanded polystyrene is a relative of polystyrene foam. But there are differences. Expanded polystyrene:
- 4 times denser and therefore stronger than polystyrene foam.
- More uniform.
- Costs more.
For construction work Expanded polystyrene with the addition of fire retardants (substances that add fire safety to the material) is used. In Russia, GOST 15588–86 has been adopted for slabs.
Laying features
The material can be laid on any base (including wooden floors).
Installation of the system is much simpler, cleaner and faster than with concrete screed, because in fact you just need to lay the slabs.
Let's consider the stages of laying polystyrene foam under a heated floor:
- Before installation begins, the base is leveled and cleaned, because the future polystyrene layer will repeat all the unevenness. If the base is slightly movable, differences in the calculated load should not be more than 2 mm/m.
- Thermoacoustic film can be spread on the base, under a layer of polystyrene, if you need to improve sound insulation.
- Next, polystyrene boards are laid. The process is like assembling a large puzzle. You need to carefully ensure that all the elements are in their places. The edges of the slabs should not be allowed to join “tightly” and be compressed (grooves can be made on the sides for tightly joining the slabs). They must fit together precisely, but freely.
- The grooves of polystyrene plates have a thickness of 20 - 40 mm. Aluminum plates (thermal distributors) are inserted into them, into which the pipe is subsequently placed. This stage of simple installation replaces the lengthy process of drawing the pipes yourself, fastening them and pouring the screed.
- Aluminum has excellent thermal conductivity and, in combination with underfloor heating pipes, provides high-quality, uniform heating. You just need to distribute them so that at least 80% of the surface area is covered with aluminum.
- After the pipes are laid, you need to do trial run heat for a day.
- The next layer is waterproofing. An ordinary film will do, it is only desirable that its thickness be at least 0.2 mm. The film must be laid with an overlap (about 10 cm).
Expanded polystyrene goes well with any finishing: laminate, parquet, linoleum, carpet, tiles, etc.). Only under soft coverings and the tiles will need to be laid on a rigid base. For example, a layer of chipboard, or cement bonded particle boards. Parquet and laminate can be installed directly on a polystyrene floor.
In rooms where water is expected to get on the floor (swimming pools), the polystyrene floor is filled with a self-leveling mixture.
Do not leave floors covered with polystyrene exposed for long periods of time. The material holds distribution loads well, but is very vulnerable to point pressure.
A dropped tool, a carelessly placed object, or a shoe heel will damage the surface.
How to choose polystyrene foam for a warm water floor?
Quality
A high-quality polystyrene foam board can be distinguished by the following characteristics:
- Color: uniform, bright (more recently, White color- not the only one used for polystyrene foam boards, however, this does not affect the quality, and therefore should not affect the price).
- Smell: absent or barely perceptible. A strong chemical smell is evidence of poor quality.
- Edges: dense, smooth. If they crumble and crumble, this is a bad sign; such a slab will be very difficult to work with.
- Surface: smooth, without dents or damage.
- Granules: approximately the same size, without gaps or voids.
Carry out a small experiment: break a small piece of material and see how it breaks - only between the granules or right along them too? If the first option is bad, it means they weren’t sintered enough.
And here we will analyze the types of electric heated floors and try to determine which option is better.
Kinds
Different technologies have produced several varieties of material:
- Unpressed(EPS, PSB-S and others). The granules are dried, foamed at 80° C, then dried and heated again. The mixture is poured into molds, where it cools and thickens. The most inexpensive, widespread option, but also the most fragile.
- Extruded or extruded(EPS, XPS and others). Granules are produced at high temperature and pressure, while a foaming reagent (a mixture of freons and carbon dioxide) is introduced. After which, the mass is squeezed out through an extruder. Final stage– drying.
- Autoclaved(Stirofoam). In essence, it is the same extruded polystyrene foam, but an autoclave is used to foam and sinter the granules. Not used for thermal insulation.
- Pressed(PS-4, PS-1). Thermal conductivity is the same as extruded.
Characteristics of some options:
- Penoplex 35 is highly resistant to fire, so it is often used for walls, roofs, and floors.
- Technoplex is resistant to cold. Used for balconies, roofs, facades.
- Termite has the lowest level of moisture absorption. Can be used where high humidity, including for foundations.
The thickness of the polystyrene plate can be from 15 to 70 mm. If the floor is located above an unheated room or ground, the thickness of the polystyrene foam should be 15 cm (in the north), or 10 cm (in mid-latitudes).
