House insulation with polystyrene foam. Foam crumb - how to use? Foam crumb as insulation

Foam crumbs are polymerized rounded balls with a diameter of 3 to 7mm. Crushed foam (this is often called given view crumbs) is obtained by the method of industrial crushing of industrial foam waste. Economically, this method is more efficient, since thanks to this method of processing foam, it becomes cheaper as a primary material, and the initial properties of the foam remain the same during crushing.

Application of foam crumbs:

Expanded polystyrene chips are widely used in the industrial and construction and repair areas. The foam crusher is mainly used as construction material and excellent insulation. Thermal insulation with foam chips is considered the most economical and reliable method for thermal insulation of foundations, floors, walls or roofs. Let's consider the basic principles and methods of use:

• Filler: holes and cavities in the ceilings between the walls are filled with foam crumbs, in brickwork or for leveling surfaces. Due to their technical characteristics, the foam granules can take any shape, which avoids any cold bridges. High strength allows you to avoid deformation, in contrast to such heaters as expanded clay and mineral wool.
• Floor screed with foam crumbs: the process of preparing polystyrene concrete takes place in several stages. Initially, a solution is prepared: take a small amount of water and cement, mix until a creamy consistency is obtained. The second stage: while continuing to mix the solution in a concrete mixer, add foam crumbs. The material ratio depends on the expected thermal insulation result. The higher the percentage of foam granules, the greater the thermal insulation properties of your screed. However, it is necessary to take into account the following, if the material is not properly distributed, the density may decrease. For example, if you are planning linoleum on the floor, the percentage of use of foam granules should be less than when laying parquet.

If you yourself want to make a floor screed with foam chips at home, then to obtain a solution, you must observe the following proportion (* recommendations of builders):

• 4-5 buckets of expanded polystyrene crumbs
• 2 buckets of sand
• 1 bucket of cement
• 1 bucket of water

It is important to note that when working with expanded polystyrene crumbs, it is necessary to adhere to the norms of use and observe safety precautions: avoid open fire, do not use various chemical solutions.

A crumb of polystyrene is an effective material for insulating concrete floors; it will last a very long time and will not lose its operational properties. Comfort and warmth guaranteed!

Int-Deco offers to buy foam crumbs in Kiev or with delivery across Ukraine. Crushed foam plastic is packed in plastic bags of 0.33 m3.

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Foam crumb for insulation

One of the most popular materials for insulation can be considered foam crumbs. The choice of consumers is justified, since this is a high-quality, environmentally friendly material that will help make the house warm and comfortable without significant damage to the family budget.

Foam crumb properties and applications

Foam crumbs have a number of advantages over other heat-insulating materials.

Foam crumb - what is it

Foam crumbs or granules are a bulk material that is noted for its versatility and is represented by foam balls with a diameter of about 5-6 mm.

Characteristics and properties of foam chips

Foam granules have all the properties of a solid sheet, but unlike foam boards, granules can take the shape of any container where they are placed. Styrofoam granules have a number of features:

1 Almost does not conduct heat. Polyfoam is tens of times higher than the thermal insulation of conventional concrete and almost ten times higher than ceramic bricks.

2 Safe for people, does not contain toxic substances, does not cause allergic reactions, odorless, no organisms live in it.

3 Low weight. For comparison, 1 cubic meter of foam chips weighs about 15 kg, and plywood - about 500 kg.

4 Wear resistance. Data from laboratories that test polystyrene foam will determine the durability of the material - about 80 years.

5 Very resistant to temperature changes and can withstand drops from -170 to +90.

6 Sound insulation due to the elasticity of granules, cellular structure, which reduce sound vibrations.

7 Ability to restore its original shape during deformation.

8 Ensuring air exchange of the surrounding space, i.e. unlike conventional foam, the granules are able to "breathe". This prevents the greenhouse effect and future mold growth.

Foam crumbs are characterized by the following criteria

1 Density of the material from which the balls are made. The high density of the substance determines the increase in the mass and strength of the granule.

2 The diameter of the granules can be varied from 1 to 8 mm by setting the desired size during crushing.

3 Flammability. That is why this material is used in the inner layers of walls. To increase fire resistance, a fire retardant is added to the foam. After that, the material becomes self-extinguishing.

Pros of foam crumb

All materials have their own advantages and disadvantages. Foam granules are no exception.

There are the following advantages in using foam crumbs:

Less weight of the final structure.

Savings on further finishing materials due to heat and sound insulation properties.

Simplicity in the process.

Low cost.

Cons of using foam chips

The soft structure of the foam makes the screed from such a solution not so wear-resistant.

The need for isolation from air due to its flammability. Foam concrete is capable of rapid destruction if it comes into contact with air.

Varieties of foam crumbs

There are two ways to obtain foam granules and, accordingly, two types of them:

Primary treatment, when a special technology is used to expand the polystyrene beads. This is an expensive process.

Crushing of foam waste. This is a secondary production, therefore it is more economically profitable. The remains of the foam are placed in special machines that crush the material to homogeneity. If necessary, you can set the desired ball diameter.

The cost of foam granules

The efficiency of foam crumbs was noted as quality material for insulation compared to others. Depending on the characteristics of the foam granules and the method of their production, the price for cubic meter may vary significantly. The smaller the granule diameter, the higher its price. Foam chips obtained by crushing are significantly cheaper than those obtained by primary foaming.

The use of foam granules in various fields

Foam crumbs are used to insulate attics, walls, floors and floors.

1 Insulation of the attic. The room loses a significant percentage of heat through the roof. Foam granules are an excellent option for insulating an attic due to their low degree of moisture absorption and resistance to temperature extremes.

2 Wall insulation. In addition to the main characteristics, foam crumbs take the form of a container in which it is located, this is especially important when insulating a facade with curly elements.

3 Insulation of interfloor ceilings. Sound insulation and the specific weight of the final structure are important in the formation and insulation of interfloor floors. Foam crumbs are also useful for floor insulation if there is a basement under the house that is not heated and additional insulation is required.

Brief summary

The consumer interest in foam granules is justified by its versatility and low price. Due to its unique properties, foam crumbs are in demand in many areas from construction and furniture manufacturing to the creative process. design decorations and fishing.

The cost of foam granules depends on technical characteristics the granules themselves and the method of their production.

Insulation 10 mistakes

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Leveling the ceiling with "warm" plaster based on expanded polystyrene chips

Leveling the ceiling by applying thick layers of plaster is not always justified: you will need to attach a reinforcing mesh, and with a significant drop in the level of the ceiling, the layer will not withstand and collapse. Adding polystyrene foam balls to the plaster will help you in this case, as well as when repairing walls, masonry in a well, joints of external house panels and internal floor slabs, attics, roofs and floors. When connecting balls of expanded polystyrene with cement-sand or concrete mortar, the ready-made mixture perfectly keeps warm inside the room.

To work with the ceiling, we need the same tools as for ordinary plastering and at least two plastic buckets.

After cleaning the ceiling from old layers, we carefully prime the ceiling using a "fur" roller. Primer "Betonokontakt" is suitable for concrete slabs. Complex and hard to reach places prepare the ceiling several times with a brush.

The drying time of the primer is printed on the packaging - different manufacturers have different times from 3 to 8 hours. Experienced craftsmen never adhere to the recommendations for curing, but try the surface by touch. If the ceiling is still wet, then it is worth waiting, otherwise the alignment of the ceiling will be in vain - the further layer will collapse in a few weeks.

Polymeric plaster mortar is prepared from Stairbond glue in a 1: 1 ratio to M400 cement in a bucket. Stir everything with a drill with a mixer attachment until smooth, gradually adding water until thick "sour cream". If the mixture seems too thick to you, it is allowed to add a little water to it.

Now we add polystyrene foam, and you have 2 options: use ready-made crumb, which is sold in hardware stores by weight, or take a regular foam plate and crush it over a bucket. The crumb fills a separate clean bucket 75%, then add half the glue you just made from the first bucket. The proportion of the crumb solution will be somewhere around 1: 2.5. Stir the composition until all the expanded polystyrene granules turn dark.

If your screed (cement + sand) is too high, then it is better to refuse unnecessary overloading of floor slabs, and use an easier material - expanded polystyrene concrete. Its composition is simple: cement not lower than M400, expanded polystyrene balls and saponified wood resin foaming agent (SDO). Leveling the ceiling with expanded polystyrene concrete makes the layer not only light and warm, but also not prone to shrinkage and cracks.

Table 1. Methods for the manufacture of expanded polystyrene concrete

Description	Benefits	disadvantages
"Encapsulation" when it is necessary to reduce the density of the material. The granules are covered with cement glue and the voids are not filled with sand. No special equipment and chem. additives such a mixture is impossible to prepare!	Possibility of production of PS concrete, density of which is less than 200 kg / m3, use of granules of the same size	Mixture delaminates when forced or transported, low flexural strength (in case of block)
"Porization" of the solution, which means replacing the sand with air granules	Possibility of production of PS concrete, the density of which is less than 300 kg / m3, and the change in this indicator in a wide range	A stable characteristic is rather difficult to obtain due to the complexity technological process: bubbles are lost when stacked, transported or pumped
Creation of PS concrete with structure high densitywhich will not let water through even at a pressure of 2MPa	All the advantages of the 2nd method + stability and preservation of their characteristics during transportation, spraying. Products are even formed from such PS concrete using a 3D vibropress	The presence of special equipment is mandatory

Leveling the ceiling with plaster with expanded polystyrene requires the presence of an SDO in the form of a powder or solution, but if you do not find it in your store, then you can do without it. A screed without LMS will not be as warm and light as with this additive, but better than a conventional cement and sand screed.

We apply plaster to the prepared ceiling in two passes. The first stage is a layer of 1 bucket (thickness up to 3 mm), then immediately apply the mixture from 2 buckets. The ironer is constantly wetted with water. Drying time - 3 days, after which we transcend to leveling the ceiling with plaster putty from 1 to 5 layers. Each layer should dry well before applying the next one (1-3 days).

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Foam crumb (crushed) is a heat-insulating material used as insulating backfill in inter-wall voids, under floors, as well as insulation in cement mortars.
Foam crumbs are an excellent substitute for expanded clay, 5 times warmer and 40 times lighter.
It is successfully used as filling in open cavities (walls, ceiling, floor), as a component of warm and lightweight concrete. This lightweight concrete is used for screed floors, roofs, load-bearing and interior walls.

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ADVANTAGES OF FOAM CRAWL

It is perfect for inter-wall ceilings and uneven surfaces in wall voids, partitions between walls, floors, underground, attics (on logs, boards, and other materials), where it is inconvenient to lay slabs, and is also used instead of expanded clay.

High-quality foam chips have many advantages! The main advantages of the material include:
Environmental friendliness - does not contain substances harmful to humans. For example, from polystyrene, from which foamed granules are produced, packaging for various products and dishes are made.
Resistance to various weather conditions - effectively protects surfaces from moisture.
Excellent thermal insulation properties - foam balls differ in different diameters and shapes. As a result, the total area of \u200b\u200bcontact of the foamed granules with air increases, so the material is excellent for insulation various premises and objects.
Excellent sound insulation - the material stands out for its excellent wave absorption performance. It is often added to cement and poured into cavities during renovation or construction.
Durability - the foamed granules do not change shape, physical or chemical properties under the influence of temperature or humidity changes.

The foam granule is considered reliable and inexpensive due to its structure and properties. packing material: actively used to protect especially fragile products.

Blowing with foam chips is one of those services that our company has been offering to its customers for several years. This is done for heat and sound insulation of residential, office and industrial premises. IN last years This method of insulating houses has become very popular due to the fact that there is a stable increase in prices for utilities, and the cost of the insulation itself is relatively low, and allows you to save a significant amount of money in the future.

This method of insulation is perfect for ceilings between walls, uneven surfaces and voids, partitions between walls, floor insulation, basement, attic, any places where sheet insulation impossible.

The house is insulated with foam plastic using a special industrial installation under pressure. Due to the large air flow, the foam ball of various diameters is evenly laid and compacted in the voids - almost to the density of the foam sheet. Under the influence of pressure, the material clogs all the unevenness of the walls, cracks, potholes, thereby preventing the cold from getting the slightest chance to enter the room. It is also possible to carry out pneumatic laying of such bulk heat-insulating materials as perlite, ecowool, etc.

Warming with crumb

The advantages of using this material:

• Warming with crumb gives a kind of "thermos" effect, due to which a comfortable temperature is achieved inside the room and the absence of its drops;
• Thermal insulation with foam chips is much cheaper than mineral wool (by about 35-40%);
• The material itself is absolutely non-toxic to humans, does not emit harmful substances either immediately or over time;
• Rodents do not start in loose foam balls;
• It has good vapor permeability - which means that the vapors escape freely, and the movement of air between what is inside and outside is free. This will save the walls from the appearance of such unpleasant signs of deterioration of the material as fungus or mold, which in itself is very harmful. That is why the criterion of wall insulation with foam plastic will not harm.

In our country, there are many private houses that were built on the same principle - they all have a fairly wide air gap between inner walls and external (the so-called "well" masonry). Our company will help you turn this feature of your building into its main trump card! In the voids between the walls, we blow out foam chips, crushed basalt wool, perlite, etc., thus, the house becomes not only protected from heat loss, but also acquires additional sound insulation.

Warming with foam crumbs

Foam insulation, namely the blowing of inter-wall voids, occurs as follows: holes with a diameter of 35 mm are drilled in the walls (for comparison, this hole is slightly larger than a five-kopeck coin), their number can vary from 5 to 10 pieces, depending on the area of \u200b\u200bthe wall insulation. A very important point - the minimum layer for pneumatic laying of the foam ball should be 3 centimeters. After all the holes are made, foam balls of different calibers are blown into the cavity under a strong pressure of air and compacted. The procedure is repeated until all cavities are filled with material.

Foam insulation from the outside takes three to four hours, it can be performed regardless of the season. Most often, work of this kind is carried out in spring, summer or autumn, however, if necessary, we also carry out during the winter cold weather, there is no strict reference to the season.
Our company has been working in the field of thermal insulation of buildings for over a decade. We have acquired a wealth of experience and valuable skills. All this allows us to assert that working with us is profitable, fast, reliable!

Foam crumbs are polymerized balls, the diameter of which varies between 3-7 millimeters. Crushed (as this material is also called) is obtained by crushing foam waste. This is economically beneficial, and the original properties of the foam remain the same. So, today we will find out what the foam crumb can be used for.

Foam crumb - how to use?

The material is widely used in construction and renovation, as well as in industrial sphere, mainly as a heat insulator or building material. Using foam crumbs is an extremely beneficial method of insulating foundations, walls and floors. Let's find out what are the basic principles of using the crusher.

• 4 or 5 parts crushed;
• 1 part water;
• 2 pieces of sand;
• 1 part cement.

Note! When working with crumbs, do not forget about safety precautions: you need to work away from an open flame, without using chemical solutions.

Where else is shredding used?

Among other things, the material is also used in the following situations.

1. For fishing wobblers. Finnish fishermen, for example, attach a crumb to a hook and use it as bait.
2. For decorating gardens and parks. It is rarely used, but, interestingly, the crumb even allows you to make an imitation of snow drifts!

So now you know how foam chips are used. That's all, good luck with your work!

Video - Kneading the foam crumbs

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Polyfoam can be used to insulate a house, apartment, garage, shed, annex and even a bathhouse. But the latter must be insulated carefully, observing some rules. But are there any construction projects that cannot be insulated with foam plastic? Yes, there are. Polyfoam cannot be used to insulate a basement and a building with a ventilated facade. Why?

The advantages of polystyrene as insulation are very wide. But its capabilities as a material with certain physicochemical properties have some negative nuances. What are the pros and cons of Styrofoam? This is what this article is about. But first, the pros.

Benefits of Styrofoam

One of the thinnest heaters

Among all heaters, ordinary foam, aka expanded polystyrene, has almost the lowest coefficient of thermal conductivity. What does it mean? This means that its thickness as a heater will be the smallest in comparison with other materials. Here is a list of these materials in ascending order of their ability to conduct heat:

1. Penoizol (50 mm).
2. Polyfoam insulation (75 mm).
3. Mineral wool (125 mm).
4. Wood (340 mm).
5. Brick wall (900 mm).
6. Concrete (2132 mm).

Note:

• the thickness of the materials is indicated in brackets, at which their equality as heat insulators is achieved;
• penoizol is liquid materialwhich consists of several components. When mixed, it swells and hardens. At the same time, it acquires a porous light structure similar to a hardened polyurethane foam... Its main drawback is toxicity. Therefore, it can only be used for insulating non-residential premises. Usually, it is poured into a specially prepared cavity inside the wall.

The lightest insulation

Finding out the weight of polystyrene foam boards is very simple. All manufacturers indicate the density of the material on the packaging:

• 15 kg / m 3;
• 25 kg / m 3;
• 35 kg / m 3.

And the density of one cube is its weight. That is, one cube weighs 15, 25 and 35 kg, respectively. By the way, this is how you can check the quality of the material you are buying. If the package says 25 kg / m 3, and the checked package of sheets weighs less - do not hesitate. You have been misled a little.

Sometimes the manufacturer bypasses this point. For example, in a package with a declared density of 25 kg / m 3 there will be sheets with a really lower density. But this package will have its own beautiful name... And a pack of sheets with a real declared density will be called differently: “ Warm house"," Standard "or" What else is there. " But, in any case, the lighter the pack, the lower the density of the insulation. Remember this.

For work, you can use foam of any density. The main thing is to understand that the lower it is, the more fragile and fragile the sheet will be in your hands. And the use of such sheets, for example, on the first floor of a building is highly discouraged - the facade can easily be damaged by impact. Therefore, the denser the sheet, the better.

One of the most inexpensive heaters

It is indeed the most inexpensive industrial insulation material. At the same time, two types of it are used in construction practice:

• sheet polystyrene;
• foam chips or balls.

Today, the selling price for both of these species is roughly equal. This is most likely due to the increased demand for balls. Most often they are used for roof insulation. The cement-sand mixture is mixed with balls and poured onto the floor. The result is warm, durable and inexpensive.

Polyfoam is a very multifunctional insulation

Its main applications are:

• wall insulation;
• roof insulation;
• floor insulation;
• insulation of the basement of the house.

Wall insulation with foam sheets has become a classic today. The result is very warm, relatively inexpensive, strong and reliable enough. According to the operating time, expanded polystyrene covered with a layer of plaster can serve for a very long time. Manufacturers guarantee the service life of the facade made of expanded polystyrene plates without major repairs for 30 years. They say that in Germany, foam insulated houses are insured for longer periods. Up to 100 years old.

When insulating the roof, polystyrene foam chips or balls are most often used as part of a cement-sand mixture.

Extruded polystyrene foam is used for the floor and basement. It differs from conventional foamed in manufacturing technology, in greater density and strength. But his price is much higher.

A little more positive about expanded polystyrene

Polyfoam is the most convenient and pliable building material to work with. It can be cut with a knife or a hacksaw. You can easily make any hole or recess in it. This property is very much used by builders when designing curly elements of the facade of a building. Cornices, ledges, window frames and other architectural elements should be made from such comfortable material very simple.

Due to its lightness, the foam element can be glued to the facade anywhere. Well, after the glue dries, it can easily be further processed, for example, with a drywall plane.

These were the strengths of the foam insulation. But, like any other material, it also has its weaknesses. What are the disadvantages of polystyrene and why can't a basement or a ventilated facade be insulated with it?

Disadvantages of Styrofoam

For adoption correct decision, besides all the positive, it will be very useful to know some of the negative aspects inherent in expanded polystyrene. There are several of them.

Polyfoam is a combustible material

Whatever the manufacturer says on the packaging, when in contact with fire, expanded polystyrene burns and melts. Therefore, you need to make sure that the fire does not get close to it. The consequences can be very dire.

That is why it is impossible to use expanded polystyrene on a ventilated facade. Direct contact with air and the void between the insulation and the facade surface create all the conditions for good combustion. The void, by the way, works as an additional draft of air.

Styrofoam releases hazardous substances

In the process of natural aging - destruction, expanded polystyrene releases styrene monomer from itself. Its smell is clearly audible if you put a pack of Styrofoam sheets indoors. After a while, a characteristic bad smell... That is why it is impossible to do foam insulation inside residential premises. But, unfortunately, few people know about this.

By the way, this is why you need to carefully and carefully insulate the bath with expanded polystyrene. When heated to 90 degrees Celsius, the release of volatile compounds hazardous to human health becomes very large.

Polyfoam is hygroscopic

That is, it draws moisture into itself. Whatever they say, he does it, though not quickly, but confidently. Therefore, insulate raw cold basement regular styrofoam would be a very bad idea. It is better to use extruded polystyrene foam for these purposes. He has a different internal structure due to which he does not pull moisture.

To test this statement, you can put a piece of regular foam and extruded into water. After a while, you will receive two materials of different moisture content. One will be heavy and wet, and the other dry and light.

Styrofoam works as a vapor barrier

This is another serious drawback that few people think about at the design and construction stage. It manifests itself especially well in houses that are built entirely of expanded polystyrene blocks.

In the process of breathing, a person exhales warm water vapor with air. This steam must leave the room. The main direction of steam movement is upward and sideways. The ceiling and walls act as a kind of steam outlet, they "breathe". In a building insulated with expanded polystyrene, good forced ventilation must be provided. Otherwise, in winter it will be possible to collect buckets of water on the windows, and the room will be very humid.

Styrofoam is a good home for mice

This is a proven fact. Small gray rodents live well in ordinary expanded polystyrene. For them, this is a kind of paradise - warm, soft and safe. Whatever this happens, it is necessary to limit as much as possible the contact of the insulation with the places of possible entry of rodents. This can be done with mineral wool or metal inserts. Rodents do not like minvata, and they will not be able to gnaw through a metal insert. They also do not live in extruded polystyrene foam.

This article managed to list the main positive and negative properties foam. As insulation, foam has a very wide range positive qualities... But as a material, it has significant disadvantages. Therefore, it is necessary to approach the use of expanded polystyrene in the insulation of housing itself carefully and thoughtfully.

By the way, the very name - "foam", came to us from the times of the Soviet Union. At that time, the first import supplier of expanded polystyrene boards was a company with the word "Styrofoam" in its name. It turned out like with a copier - the name of the company became the designation of a whole class of copiers. The same thing happened with Styrofoam.