Construction of houses from polystyrene fixed formwork. Application of styrofoam formwork for foundation Foam formwork for foundation

In the construction of monolithic reinforced concrete foundations (monolithic slab foundation technology), an important role is played by the formwork - the form into which the concrete mass is poured. Traditionally, this structure is assembled from shields - wooden (choice of boards for the foundation formwork) or metal, which are removed after the concrete has matured.

Hence the definition of this type of formwork - removable. Recently, however, many developers have been using fixed structures that do not require dismantling (device of fixed formwork for the foundation).

This type includes formwork for the foundation of foam.

Elements of fixed formwork made of foam plastic are hollow blocks formed by slabs of the PSB-S brand. Wall thickness - 40, 100 or 150 mm. The blocks are produced in two standard sizes along the length - 1000 mm and 2000 mm (double block).

To design the rotation of the foundation, corner elements are used, each face of which is equal to the length of a single block - 1000 mm. The distance between the walls of the formwork is provided by jumpers. It corresponds to the thickness of the poured concrete.

Depending on the purpose of the formwork, this parameter can be 15, 20, 25 or 40 cm.

Advantages of polystyrene formwork

The main advantage of foam formwork, which manufacturers pay special attention to, is the high speed of installation (do-it-yourself formwork for the foundation).

According to experts, the construction of a monolithic foundation using this type of formwork is accelerated by 30% compared to traditional methods.

The clear advantages of polystyrene formwork include the following points:

• ease of construction and its strength: having a small mass, foam blocks perfectly tolerate static and dynamic loads from pouring concrete;
• good thermal insulation properties of expanded polystyrene relieve the developer from the operation of additional insulation of the foundation;
• the properties of the polymer make it possible to lay all the necessary engineering communications without any special complications.

Expanded polystyrene is inert with respect to chemical influences, it does not rot and does not absorb moisture.

Another important plus: it is very easy to assemble foam plastic formwork with your own hands; special locks are provided for connecting individual elements in their design.

Disadvantages of polystyrene formwork

The foam formwork also has a number of disadvantages:

• relatively short service life: the thermal insulation properties, as well as waterproofing, of polystyrene foam decrease over time. In twenty years, the homeowner will have to take a number of measures to additionally insulate and waterproof the underground part of the house or come to terms with an increase in its heat loss;
• when pouring the monolith into polystyrene foam forms, the cold bridge between the base of the foundation and the ground remains uninsulated. This disadvantage threatens to negate the effect of thermal insulation, which is so proud of the manufacturers of polymer formwork;
• if the house is equipped with a heated basement, the foam will emit harmful substances - residual styrene vapors;
• special requirements are imposed on the process of pouring concrete - the mass will have to be poured around the entire perimeter in stages with layers of small thickness. This inevitably leads to an increase in the timing of this operation;
• high cost of formwork - prices start at 0.5 thousand rubles. for 1 sq. m.

Many developers are confused by one more thing: in the finished blocks, the lintels are made of the same polystyrene foam. The question arises - how will this fact affect the strength of the monolith over time?

However, some manufacturers complete detachable polystyrene foam blocks with metal jumpers.

Video about the technology of pouring the foundation with foam formwork.

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Foundation concrete bases are very popular in private housing construction. When building most types of foundations, it is simply impossible to do without such an important structural element as formwork. It provides the specified outlines of the concrete element and geometric dimensions.

Fixed formwork is separate elements or blocks. At the installation site of the foundation, they are assembled into a single structure. This design is used in the construction of reinforced concrete and concrete structures and structures.

The box structure is of two types:

• fixed;
• removable.

The shaping structure is of various types. It can be made from various materials:

• steel;
• chip-cement composite;
• expanded polystyrene;
• fibrolite;
• tree, etc.

You can buy a box-shaped structure in a specialized store or make it yourself.

Features of the formwork for the foundation of expanded polystyrene

The technology is used for the following purposes:

• for insulation of warehouses and various industrial premises with heating;
• for warming various pools;
• for warming warm basements;
• for housing construction.

What is Styrofoam?

This is a gas filled material.

For the manufacture of expanded polystyrene, the following materials are used:

• styrene copolymers;
• polystyrene derivatives.

Consider the composition of polystyrene foam:

• gas 98%;
• polystyrene 2%.

Modern expanded polystyrene is made by the non-pressing method. This manufacturing method allows increasing water absorption up to 350%.

The elements of the box structure are blocks. These blocks are formed by PSB-S slabs.

Consider the characteristic features:

• Special jumpers provide a distance between the walls. In this case, the distance between the walls must correspond to the thickness of the concrete. This parameter can vary from 15 to 40 cm. This takes into account the purpose of the polystyrene formwork.
• Corner elements are used to design a turn.
• The blocks are available in 2 sizes (100 cm and 200 cm).

Advantages

Expanded polystyrene formwork has both advantages and disadvantages. Let's look at the benefits first:

• Durability. Expanded polystyrene is made only from high quality materials. Therefore, this product is durable.
• A wide variety of blocks are available. For each type of foundation, certain blocks must be used. Most often, such blocks are used for pouring pile and strip foundations.
• For the installation of formwork made of expanded polystyrene, special lifting equipment is not required. All work can be done manually. And also standard tools are required for installation.
• Installation of formwork made of expanded polystyrene can be carried out by low-skilled workers. That is, builders do not need to have special skills and knowledge. You can use the services of private developers who have little experience. This will significantly reduce costs.
• Pouring concrete at sub-zero temperatures can be disastrous. The shaping structure maintains the required temperature regime. Therefore, concrete retain its strength characteristics. You can perm in the winter season. When concrete hardens, heat is released. This heat will be enough to maintain the required temperature.
• The shaping structure does not absorb moisture. Therefore, concrete retains its properties.
• It is made from materials that are not subject to decay.
• Blocks are mounted passages that are used for various communications.
• Can be used at any time of the year.
• Excellent thermal protection properties. In the cross section of the foundation, the temperature drop is significantly reduced. This helps increase durability. It also significantly reduces the effect of temperature.
• Easy and fast installation. Even unskilled builders can build a foundation in a short time.
• High quality construction. The shaping structure is excellent.

disadvantages

Now let's look at the disadvantages:

1. Expanded polystyrene is exposed to ultraviolet rays. Therefore, the product is necessary outside. For this, semi-rigid or rigid finished sheet material can be used. It will provide excellent protection from the effects of rays.
2. The strength of the foundation may be reduced due to polystyrene foam jumpers. Therefore, the so-called reinforcement is required. To do this, use a special transverse reinforcement.
3. You need to use a separate waterproofing.
4. Concrete must be laid evenly. Therefore, this process takes a long time.
5. High price.
6. Poor thermal insulation at the bottom of the foundation.
7. Walls need to be lined.

Where to buy and at what price?

Products can be purchased at hardware stores in your city. There are companies that provide pouring and installation services. If you want to save money, then buy products directly from a company that manufactures formwork.

Estimated prices for products:

• Jumper 10 p.
• Plug 20 p.
• Wall (corner) 780 р.
• Swivel 800 rub.
• End 780 r.
• Wall 800 rub.
• Corner 135° 500 rub.
• Corner 90° 500 rub.
• Standard 495 rub.

The use of fixed formwork for the foundation of expanded polystyrene

To fill the foundation, it is necessary to use the so-called forming element. For this, formwork is used. Removable formwork has a large number of disadvantages. Therefore, fixed formwork made of expanded polystyrene is very popular today.

Preparatory work

Let's take a look at the preparatory work first. First, the specialist must develop a project. After that, you need to level and clear the construction site. To do this, you need to use construction equipment. Then the site is marked. This allows you to define the contours of the foundation.

Formwork assembly

Now let's move on to the most important step:

1. First you need to hammer the reinforcing bars into the sand and gravel cushion.
2. Then concrete is poured (on top of the pillow). Thus, the bottom is leveled.
3. Now you need to wait for the concrete to harden.
4. Blocks are placed on reinforcing bars. The protrusions of one block are inserted into the hollows of another. The structure is assembled from separate blocks. In this case, the jumpers are located inside. And also the blocks are attached with additional brackets. Blocks are cut in half at the corners.
5. To increase the strength of the structure, a special foam is used. Corner elements are used to reinforce corners.
6. If a large foundation is being built, then you need to use an additional mount. For strengthening, you can use ordinary boards. They are attached with braces.

Rebar laying

Metal reinforcement must be laid in the box structure. Each block has a place intended for fittings.

First of all, you need to install steel vertical racks. They provide stability to the entire structure. After that, a horizontal reinforcement is installed. It must be installed longitudinally. The reinforcement must be tied with wire.

Places for communications

It is necessary to make the so-called passage holes for the installation of communications. How to make them? Transverse pieces of pipes are laid in blocks. Passages need to be made in different places.

The construction of a foundation for buildings for various purposes is not complete without the use of formwork. It is a frame structure with voids between boards or slabs. Concrete is poured into the voids, and after it dries, the formwork is removed. In the future, waterproofing, insulation and other protective actions are carried out with the foundation. The development of modern construction allows reducing the cost of materials, speeding up the process due to new technologies. These innovations include non-removable formwork made of expanded polystyrene. The assembly of the structure is carried out in a short time, and you can build it on your own.

Permanent formwork: features and benefits

The construction of a foundation using fixed formwork made of expanded polystyrene at Russian sites has been used relatively recently. European builders have been using this method for over 50 years.

Fixed formwork from foam is a kind of constructor. In production, the foam is poured into molds with locks and joints, after hardening, such blocks look like a Lego constructor. At the construction site, the constructor is assembled and cement is poured inside the block.

The name "fixed formwork" implies that the structural blocks remain on the foundation, i.e. they become part of the foundation of the future building. Installation and erection of the structure does not require the use of special construction equipment. Formwork blocks have a small mass, and ordinary builders will be able to cope with their installation. Already at the stage of building the foundation, financial costs will be significantly reduced.

Fixed EPS foundation formwork provides many options for builders and architects. With its help, you can build not only the foundation, but also build a full-fledged building. At the same time, such houses receive many advantages over buildings built using old technologies.

The material for the manufacture of formwork blocks is expanded polystyrene or polystyrene, as well as extruded polystyrene foam.

Expanded polystyrene is made by extrusion, where the foam granules are melted and form a monolithic slab. The result is a solid block., capable of passing air and not absorbing moisture, moreover, polystyrene foam is bending strong.

Extruded polystyrene foam is made from polystyrene granules under the influence of high temperature and high pressure with a foaming agent. The most popular extruded polystyrene foam is foam plastic, the formwork from which you can make yourself.

Formwork advantages

The use of foam formwork is due to its environmental performance. The composition does not emit toxic substances, does not enter into chemical reactions with stormwater reagents. Material advantages:

Disadvantages of formwork blocks

The weak points in the application of such building technology include some points, for example, after the construction of the foundation of the house, it becomes impossible to carry out engineering networks: it is impossible to make holes for heating or drainage pipes without violating the integrity of the wall.

All difficulties are overcome at the design stage, then there are no problems during the operation of the building:

Stages of foundation construction

For permanent formwork when building a foundation, you will need to perform several stages:

The construction of a foundation with the use of fixed formwork implies the possibility of adding large-fraction crushed stone to the concrete mixture. The size of the fraction should not exceed 8 mm.

From monolithic reinforced concrete, one cannot do without a formwork device. In the traditional sense, the formwork is a building envelope, most often made of wooden structures, which serves to give precise geometric parameters and position in space to concrete products. After the concrete mortar has cured, the formwork is removed. However, there is an alternative method that allows you to leave the formwork as an integral part of the building structure.
This technology is called fixed formwork PENOPLEX®. This method allows to reduce the volume of construction and installation works by one stage - to exclude stripping, and most importantly, there is no need for wooden formwork, which makes up a significant part of the work and is further disposed of in the course of work.
The unique technology with PENOPLEX® insulation helps to improve many characteristics of the building structure. Fixed formwork PENOPLEX® also performs the function of thermal insulation for the foundation and basement parts of the future house. The fixed formwork technique has long been actively used in Europe, and this is due, first of all, to the energy efficiency of the building structures being erected.

Fixed formwork for private housing construction

The use of a strip foundation in private housing construction is due to its versatility, reliability and affordable price. One of the most expensive steps in creating a shallow and deep strip foundation is the formwork for the foundation. Permanent formwork PENOPLEX® can significantly reduce the cost and speed up the process. The part of the strip foundation protruding above the ground becomes the basement of the future house, which is already insulated with high-quality PENOPLEX® thermal insulation. Thus, this technology allows you to combine the creation of formwork and insulation of the foundation with the plinth into a single process.

Fastening fixed formwork PENOPLEX®

Fixed formwork PENOPLEX® is fastened with a universal screed. Thanks to the extension element of the screed, the thickness of the concrete screed can be adjusted. Such a screed will be universally used both in the construction of foundations and in the construction of walls.

Type of universal screed in assembled form:

The PENOPLEX® fixed formwork device using a universal screed, as a rule, looks like this:

1. Outer layer: PENOPLEX®

2. Inner layer: PENOPLEX®

3. Universal screed of fixed formwork

4. Reinforcing cage

• Acceleration of construction work. Accelerates and simplifies construction by combining several operations into one. Bearing structures and thermal insulation are mounted in one technological cycle.
• Financial savings. High costs for the formwork, which is disposed of after dismantling, will not be required. Insulation PENOPLEX® also allows you to get a flat surface of the foundation walls, which reduces the consumption of concrete mix.
• Increasing the reliability of the design. The main element of fixed formwork - reliable PENOPLEX® insulation subsequently becomes part of the wall structure.
• High structural strength. Due to the high compressive strength (more than 20 tons per 1 m2), PENOPLEX® does not collapse and is not squeezed under the action of the concrete mixture.
• The tightness of the structure. Zero water absorption and a stepped edge along the perimeter of PENOPLEX® allows you to mount the plates as tightly as possible to each other and exclude water and concrete leakage.
• Protection against biodamage. Protecting the load-bearing elements of the structure from the adverse effects of the external environment, the biostable and environmentally friendly thermal insulation PENOPLEX® extends their service life.
• Elimination of heat loss at home. The use of high-quality thermal insulation PENOPLEX® helps to prevent freezing of the soil and the flow of cold to the foundation. The constant low coefficient of thermal conductivity of 0.032 W / m∙ºK PENOPLEX® eliminates heat loss of the house through the foundation, respectively, the interior remains warm.

An important factor that distinguishes the fixed formwork technology from the traditional strip foundation device is that with this technology, the thermal contour of the concrete core of the foundation will be completely closed. (this will save up to 11% of thermal energy)

The cost of a fixed formwork device, compared to conventional technology, will be about 20% cheaper. In the calculation, it is assumed that the strip foundation will be thermally insulated in both cases.

Consider the monolithic construction of a strip foundation for a house 12m by 12m with a load-bearing wall in the middle using PENOPLEX as heat-insulating panels

The use of a universal screed in conjunction with PENOPLEX FOUNDATION® slabs as a fixed formwork allows:

• Set the exact dimensions and minimize the overspending of the concrete mix.
• Minimize labor costs. Installation using universal ties is convenient and simple.
• Fasten the reinforcement directly to the ties, which greatly simplifies installation.
• Thermally insulate the foundation both from the outside and from the inside, which will significantly reduce heat losses. When heating, there is no need to warm up the entire volume of the foundation.
• Implement the design of a complex foundation (for example, tape in the form of a brand)
• Reduce production time and material costs.

The creation of a non-removable polystyrene foam formwork is usually thought of when it is planned to build a building from monolithic reinforced concrete. The outer blocks of such an auxiliary structure are thicker than the inner ones, which makes the structure for the foundation extremely strong. Deciding whether it is possible to undertake independent installation of fixed formwork made of polystyrene foam is after considering its advantages and disadvantages.

Description of polystyrene foam formwork from the positive and negative side

Fixed formwork made of lightweight polystyrene foam is characterized by such advantages as:

The disadvantages of formwork assembled from expanded polystyrene blocks, builders include:

Financial costs for the purchase of a synthetic auxiliary structure

When purchasing a fixed formwork made of expanded polystyrene, a relatively small amount is left in the store. At least this design costs less than formwork made from natural materials.

The price of fixed formwork blocks made of expanded polystyrene is determined by their appearance.

Table: formwork cost depending on the purpose, size and thickness

Installation of fixed formwork involves the use of various fasteners and tools. They are relatively cheap to purchase.

In addition to expanded polystyrene blocks, reinforcing bars, end caps and other devices are needed to create formwork.

Table: cost of additional elements

Technology of laying non-removable polystyrene foam formwork

In order to correctly place non-removable polystyrene foam blocks before pouring liquid concrete, special skills are not needed. Observing the requirements, the structure can be assembled without problems.

The walls of the house can be assembled from ordinary wall, as well as from rotary and corner blocks of expanded polystyrene

How to install an auxiliary structure

When starting the construction of formwork from polystyrene foam blocks, you need to understand that the process resembles the assembly of a designer. Each part of the structure made of artificial raw materials has recesses at the bottom, and spikes at the top. Therefore, the blocks are connected tightly and firmly and are easily assembled into the desired design.

Grooves and protrusions make it easy to assemble the formwork

Expanded polystyrene formwork is mounted by performing the following steps:

1. The foundation of the house is covered with a canvas that serves as a barrier to moisture. The first line of expanded polystyrene blocks is placed on the waterproofing material. Inside them (vertically), reinforcing elements are threaded, providing a reliable connection between all structural fragments. When placing blocks, they look to see if the dimensions correspond to the specified parameters, follow the shape of the formwork and leave voids for outlets for internal partitions.
2. The next lines of blocks are set so that they overlap the joints of the structural elements laid earlier.

   Expanded polystyrene formwork elements are laid out in the same way as bricks

3. The structure is strengthened along the perimeter, that is, two metal rods are inserted into each line of blocks. The reinforcement is immersed in the material only in the horizontal direction. To facilitate this task, small protrusions are created on the jumpers on the inside of the blocks. Metal elements are laid, overlapping, and fastened to each other with steel wire. In addition, the reinforcement is connected in the same way with pins inserted vertically into the base.

   To create an armature frame, pins with a diameter of 12 mm are suitable

4. Through the created design, the necessary communications are carried out. Then mounting holes are made in the formwork. It will not work later: poured and already hardened concrete will become a serious obstacle.
5. For pouring, a composition is taken that is devoid of large-sized crushed stone, since it is able to deform the walls of the expanded polystyrene structure. The formwork is filled with mortar in layers of one meter. The penultimate layer of concrete is pressed and leveled. When it is completely hardened, the last layer of the solution is poured.

   It is more convenient to pour liquid concrete into the formwork through a hose

Video: building external walls from expanded polystyrene blocks

Video: building an internal wall of polystyrene foam elements

Video: how to connect fixed formwork walls to a roof

Is it possible to make a non-removable structure of polystyrene foam yourself?

At the plant, expanded polystyrene blocks are produced using a complex technology in several stages:

1. Construction raw materials are treated with water vapor, which is called pre-foaming in production. As a result, the pores of the material become wider, and the material acquires a different density - 35 kg/m³.
2. Expanded polystyrene foam is kept in a bunker, waiting for it to be ready for further processing. After a day, the state of the granules in the material is normalized and excess liquid comes out of them.
3. Blocks are formed from polystyrene foam. To do this, the material is enclosed in special forms and foamed again.
4. Finished blocks are cooled with water and removed. After that, a break is made in production for about 24 hours. The exact downtime depends on the humidity and temperature of the room where the formwork is being made.
5. Waste from production is crushed and converted into storage. The rest of the material can be used again.

Expanded polystyrene formwork block is the result of multi-stage material processing

It is very difficult to repeat all of the above steps at home. In addition, the production of expanded polystyrene blocks involves the use of a steam generator - an expensive apparatus.

The steam accumulator for the manufacture of fixed formwork must have certain characteristics:

• foaming temperature - from 100 to 115 degrees;
• molding temperature - from 130 to 140 degrees;
• steam pressure during foaming of the material - from 1 to 1.5 atm;
• steam pressure during molding - 4–5 atm;
• steam consumption during foaming of raw materials - from 50 to 100 kg/h;
• steam consumption during molding - from 25 to 50 kg/h.

Expanded polystyrene blocks are produced at the factory, at home it is better not to take on their manufacture

In addition to the steam generator, the production of expanded polystyrene blocks requires pneumatic transport, a crusher of residues, a receiving hopper and accessories.

One block of Styrofoam is created in 2 minutes. On average, from 100 to 300 formwork elements are produced at the plant in one production operation.

It turns out that making blocks of polystyrene foam with your own hands is unreasonable. It is easier and cheaper to purchase a ready-made fixed formwork.

Video: the nuances of building a house based on fixed formwork

To pour the foundation, a forming element is needed that will hold the liquid mass of concrete. For this, formwork made of wooden panels, which is removable, is traditionally used. It takes a lot of time to build formwork. It has to be fastened with many elements, and after pouring it is disassembled again. Fixed formwork is also used, which remains in the ground after pouring. New innovative technologies have made it possible to create a fixed formwork, which is assembled like a children's designer. The most famous recently is the formwork for the foundation of expanded polystyrene, when using which all the processes of creating the foundation remained unchanged, except for the method of forming the formwork itself.

Technology of application of non-removable polystyrene formwork

• Foundation preparation

Consider in detail the entire process of creating the foundation.

When the project is ready and the dimensions of the foundation are known, the site should be cleared and leveled for it. After that, it is marked, according to which the main contours of the foundation begin to be determined. In the traditional version, you should then dig a trench according to the dimensions of the contour, lay a pillow of a mixture of sand and gravel in it, and then mount the formwork. The pillow promotes load balancing, drainage and is a heat insulator. A typical removable formwork is a complex wooden structure that includes many elements. In this case, you need to have certain skills and abilities. At this stage, significant differences in the new technology for creating permanent formwork appear.

• Assembly of fixed formwork

How to make a foundation formwork from expanded polystyrene? Everyone knows the children's designer "Lego", which is assembled from cubes with ledges and depressions. The protrusions of one cube are inserted into the hollows of another, and the result is a monolithic structure. Similarly, a new formwork is created. The protrusions and depressions of each formwork block are respectively below and above. It is assembled from separate blocks with jumpers inside. The block body and lintels are made of the same material - polystyrene foam. The width of the cavities inside the blocks is calculated on the width of the foundation. The formwork is also made from separate elements, and then assembled into a single structure. Blocks can be solid and collapsible. The collapsible design of the block is used to assemble the foundation according to an atypical variant.

In order for the blocks to hold the concrete, reinforcing bars are hammered into the sand and gravel cushion, on which the blocks will be mounted. Then a layer of concrete is poured on top of the pillow, which levels the bottom to a horizontal level.

After the leveling layer has hardened, the formwork for the expanded polystyrene foundation is mounted. Expanded polystyrene blocks are mounted on reinforcing bars protruding from the bottom of the trench. Between themselves, the blocks are connected according to the "groove-comb" type, as well as additional brackets. Vertically, the blocks are laid out in the same way with dressing, as bricks are laid. Thus, the vertical seams overlap. At the corners, the blocks are cut in half. They are easy to cut by hand. Builders use special machines for this when high productivity is required.

If necessary, the strength of the connection is increased by the use of special foam. To strengthen the corners, it is necessary to use special corner elements. This design does not require additional fasteners, which are widely used for wooden removable formwork. However, for safety, additional fastening will not interfere if the foundation is made of large width and height. For this, the expanded polystyrene formwork for the foundation is additionally reinforced with boards that are pressed against it from the outside and fastened with spacers.

At the bottom of the trench, check for gaps under the blocks. They should be sealed with cement-sand mortar.

• Rebar laying

Reinforcement is placed in the formwork. The blocks provide places for fittings. First, vertical racks are installed to provide additional stability. Horizontal reinforcement is laid longitudinally overlapping in the grooves at the bottom and tied with wire between each other, with transverse rods and racks. Reinforce the top in the same way. The lower part of the reinforcement is mounted immediately after laying the first layer of blocks. This greatly facilitates its installation.

• Preparation of places for communications

The foundation requires passage holes for communications. To do this, transverse pieces of pipes of large diameter are laid in blocks. This can be done before they are installed in the formwork. Passages should be made in different places and with a margin. A larger internal section will allow laying communications at an angle and with a slope.

Advantages and disadvantages of fixed formwork

Disadvantages:

1. Expanded polystyrene does not like high temperatures. If a warm basement is built, then the walls with insulation should be securely lined.
2. Thermal insulation from the bottom of the foundation is much worse than from the side.
3. High price.
4. Concrete placement is more labor intensive as uniformity is required.
5. The waterproofing properties of expanded polystyrene do not provide complete waterproofing of the foundation. It requires separate waterproofing.
6. It is not known how the polystyrene lintels of the blocks will affect the strength of the foundation. Reinforcement with transverse reinforcement is required.
7. The material must be protected from ultraviolet radiation. To do this, it is veneered from the outside.

The fixed formwork technology is used for the following purposes:

• housing construction;
• basement insulation;
• warming of pools;
• insulation of industrial premises and warehouses with heating.

Where to buy fixed formwork?

Blocks are sold in large specialized stores. Usually the length of the block is 500-1250mm, and the height and width is 250-300mm. There are firms whose main activity is the technology of fixed formwork made of expanded polystyrene. They supply products and can assemble and pour the foundation at the request of the customer. You can order blocks of the most suitable format from these companies. Buying formwork directly from the company can be more profitable, as stores make large markups for the sale.

Before buying, you should correctly calculate the required number of blocks, taking into account the fact that they will be cut during installation and waste will remain. In addition, the blocks may be defective or damaged during installation. Therefore, a stock is necessary! Curved surfaces can be provided in the project of the house. Therefore, for the installation of the foundation, certain block designs may be required, which should also be ordered. Different manufacturers may have different mounting methods, sizes and shapes of blocks. Therefore, you should take everything at once and from one supplier.