How to glue extruded polystyrene foam to concrete

Adhesive for extruded polystyrene foam is selected for a specific type of work, taking into account the density of the material that needs to be glued, its type and temperature and humidity conditions during the work and during operation.

For external and internal work, different adhesive compositions are used. In addition, the adhesive for polystyrene foam must have a low thermal conductivity in order not only to adhere polyurethane insulation, but also to help increase the thermal insulation of the entire house.

Let's discuss how to glue polystyrene foam to the ceiling

Expanded polystyrene boards are approximately 95% air, making the material lightweight and easy to cut and otherwise machine.
The scope of application of extruded polystyrene foam is extensive: it is widely used for internal and external thermal insulation of buildings, insulation of floors and roofs; expanded polystyrene slabs are the main element of modern sandwich panels used in frame construction.

The material is laid using the adhesive method, and when performing the work, a special assembly adhesive for extruded polystyrene foam is used, which allows you to obtain a reliable connection of the insulation board with wood, brick, concrete, metal and other surfaces.

Let's look at the process of installing extruded polystyrene insulation boards on a ceiling using the specialized Penoplex FASTFIX adhesive as an example.

The order of work is as follows:

1. Surface preparation. The working surface should be cleaned of any contamination. To improve adhesion, slight moistening of the base is allowed;
2. Preparing the glue. The cylinder should be positioned with the valve facing up and the mounting gun should be screwed onto it. This must be done by holding the pistol handle with one hand and screwing the cylinder with the other. During the screwing process, you should make sure that there are no people or animals in the direction where the gun barrel is pointing. After the cylinder is securely secured in the gun, it should be shaken vigorously and placed upside down;
3. Applying glue. Penoplex FASTFIX glue is applied directly to the insulation board in thin strips parallel to the edges, 2-3 centimeters away from each edge. One strip of glue is applied in the middle of the slab, parallel to its long side. The amount of foam coming out of the cylinder and the intensity of its release should be regulated by the trigger of the gun;
4. Gluing the insulation board to the ceiling. After applying the foam to the insulating panel, wait a technological pause (about 2-3 minutes), then press the slab to the ceiling surface and fix it for 15-20 seconds. During the first 5 minutes, the position of the attached polystyrene foam boards can be adjusted.
5. The slabs must be mounted close to one another with the seams spaced apart. The gap between the panels should not exceed two millimeters. For greater installation reliability, it is recommended to use additional fastening accessories (dowels). Excess foam after it has completely dried is cut off with a sharp knife.

In the cold season, before applying the glue, it is recommended to warm the container in a bucket of warm water (25-30 degrees) or keep it indoors at room temperature for several hours.

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Concerning

, then one Penoplex FASTFIX cylinder (costs about 350 rubles) is enough to insulate 6-10 square meters of walls.

But it’s not entirely clear how it comes out in price. As far as I understand, you don’t need much from this glue, since its task is to hold the heat-protective coating on the ceiling. That is, apparently a continuous layer of glue is not required. In general, from what I have dug up, there are several options:

1. Special glue
2. Liquid Nails
3. Polyurethane foam
4. Universal adhesives
5. Tile adhesives for plastic tiles

For now, I am leaning towards polyurethane foam, since the consumption will be small, it will fill in uneven areas, and the price is not that high. Does anyone have any other thoughts?

2Rubir To the ceiling? If on the floor, I will repeat that this should NOT be done. Nobody in their right mind does this.

I repeat once again, for everyone who does not understand something

There is a ceiling (it will become a floor when the finished floor covering is laid on it, but now it is an interfloor ceiling), on which a lot of everything needs to be laid.

So the question is, WHAT to glue EPS to the ceiling, what gluing options might be, considering that EPS will lie in pieces crossed by pipes (heating, electrical), and you absolutely don’t want it all to “play” both before pouring the screed and during the process of hardening.

I glued it with polyurethane foam and a special glue for EPS insulation. I liked the polyurethane foam more - it’s easy to apply, it sets faster and holds better, and it glues not only EPS and concrete, but also EPS with EPS. Additionally fixed with mushrooms. I then used EPS glue to glue the drywall to the EPS.

2Rubir What is wrong with plastic mushrooms?

For some reason, we have pipes and wiring, everything fits. and foam plastic, which does not play and the screed is even.

Maybe you need to hide pipes and wires UNDER the foam. Have you tried it? Then you don’t have to walk on it and it is laid directly in front of the screed.

To the ceiling, walls. There was also a desire to drill the floor.

Who's to say that they're not happy with it? But when I asked about fastening with dowels, they dissuaded me and said that no one fastens them to the floor, everything is glued. The task here, in my opinion, is financial and technological - to ensure reliable fastening at minimal cost and simple technology.

Yes, I’m also inclined towards foam. Because there is also a plus - it will fill the voids. Where was the drywall glued to EPS? Were the walls insulated? In the same place between them, a vapor barrier is also recommended in the case of walls.

2Rubir Drywall as an external finish, so as not to plaster. Vapor barrier is not needed EPPS itself instead of vapor barrier. The main purpose of mushrooms when installing on foam is to grab the EPS board while the foam sets.

You just need to press down until the foam hardens, otherwise it will lift and create new voids. and don’t overdo it with foam.

Thank you, we will press down with bags of dry mixture, there will be enough bags

Rubir, maybe my experience will still be useful. We insulated the interfloor floors of our house (there are 3 of them) with Floormate polystyrene foam over concrete slabs and monolithic areas. A 4cm screed was calmly poured on top using a 100x100mm BP5 mesh. The insulation was NOT FIXED with anything. In the spring, I involuntarily advertised this insulation among my neighbors - almost everyone used it for insulation, and no one fixed it on horizontal surfaces under the screed. Some people poured the screed 4cm, some - 6cm. And note, it didn’t float up or move anywhere. He's not alive, and he doesn't have legs.

. One friend had a depression on the floor slab about 40 cm in diameter and 3 cm deep, so he leveled dry sand there and pressed the EPS on top with a reinforced mesh - and he was happy

READ MORE: How to make a floor correctly

And we used the same insulation for the external insulation of a concrete plinth buried in the ground. Since the deposited waterproofing layer lies on this vertical surface, the EPS was secured (as recommended in such a case) with bitumen glue. And then they pressed down the sheets, filling the openings of the pit with sand.

Good luck to everyone in construction and repairs

Thank you, I know about this option, I was thinking about it. But here you understand what’s the matter, there is a problem, people write that their floating screed is noisy. This is for those who did NOT glue. I suspect that this is due to the fact that the EPS is not attached to the UNeven surface of the floor and plays a little when walking on the screed. Therefore, despite the fact that many do not fasten, I will still fasten the sheets with foam, in order to avoid, otherwise my ceiling is a lousy, uneven monolith.

Available to everyone

PVA is one of those glues that answers the question: how to glue foam to foam. It is one of the most common adhesives used at home in the manufacture of crafts, for interior and exterior work. Fastening the foam must be done at positive ambient temperatures. The use of protective equipment is not required.

To use this gluing method, glue is applied with a brush to both surfaces to be glued. In case of increased porosity, apply glue, filling the voids, and let it dry. Perform gluing after re-application. Ensure initial tight pressing and subsequent fixation of the position of the plates.

Installation methods and required materials

Extruded EPS is a high-density foam material. It is this indicator that distinguishes it from ordinary polystyrene - polystyrene foam. The density increases during the production process when passing through the extruder, this seriously increases the thermal insulation characteristics of the material. The final slabs consist of polymer and small air bubbles.

The specifics of installing polystyrene foam boards are as follows:

• if the material was purchased as floor insulation, it is laid on an expanded clay pad or on a pad made of other low-density material and filled with concrete;
• to insulate the foundation, the slab must be glued to the concrete of the base and secured with mounting fasteners;
• material is laid on the roof, then a layer of bitumen is placed or PPS is laid between the ribs of the rafters inside the roof layers;
• When insulating the ceiling in an apartment on the top floor, polystyrene foam is laid on the attic side with glue, then concreted or covered with crumbs, gravel, expanded clay.

Penoplex itself is extruded polystyrene foam. That is, in many ways it repeats the properties of polystyrene foam as insulation. But its structure is already different, since being extruded, it is melted in special furnaces.

At the end, standard polystyrene foam raw materials for base insulation with Penoplex are strongly glued together, forming a dense, reliable structured slab. There are no individual balls in it, as is seen in conventional foam. On the contrary, the entire slab consists of uniform foamed polymer material.

A significant proportion of the total mass of the penoplex slab is occupied by air. Extruded polystyrene foam consists of polymer and air beads with a diameter of up to 1 mm.

An important nuance here is that polystyrene foam acts as insulation. It is also often used to create ceiling tiles, decorative elements and other similar tasks, that is, to shape the appearance or thermal insulation of structures.

This means that for decorative boards, both in the form of insulation and for ceiling or any other decorative finishing, it should be specially glued to the structure. And glue it well.

And this is where the main problem lies. Penoplex, as we have already noticed, is very dense and uniform. Its face area is too smooth to adhere well to other designs or adhesives.

The relatively low adhesion rate of penoplex insulation is the main problem when working with extruded polystyrene foam.

And it is simply necessary to correct it. After all, you need to glue the penoplex in any case and glue it in such a way that there is no longer any doubt about the strength of the entire structure.

You don’t want the entire structure of insulation, finishing layer and frame to fall apart, do you?

Scheme of wall insulation with polystyrene foam.

• cement mortar;
• primer;
• notched spatula;
• container for stirring the adhesive composition;
• drill for mixing glue components;
• glue for polystyrene foam;
• expanded polystyrene.

It is quite easy to glue foam if you use additional devices to fix it. This method requires, in addition to insulation, a minimum set of materials:

• dowels;
• glue;
• seam sealant.

An economical installation method is using liquid nails. This substance does not need to cover the entire surface of the sheet; a spot application is sufficient. True, it is not suitable for every type of insulation. Another drawback is the content of toxic substances in it. Based on this, in addition to polystyrene foam, you need to purchase:

• liquid Nails;
• protective gloves.

Finally, polystyrene foam can be glued to concrete with special foam. True, it is used mainly for floors, since the adhesion (adhesion) of this substance is inferior to the bonding properties of other means. Foam comes in several types:

• for use as masonry mortar in foam block construction;
• for foam plastic;
• for expanded polystyrene.

Gluing “relatives” together

Bonding foam and extruded polystyrene foam. Sometimes during the production of thermal insulation it is necessary to glue foam insulation onto polystyrene foam. The same compositions are used for this. Since the source materials of both insulation materials are the same. Before gluing extruded polystyrene foam, treat its glossy surface with a needle roller to increase adhesion with the composition used.

Selecting the correct adhesive for polystyrene foam based on the specific situation will ensure reliable fixation of the slabs without loss of insulation quality.

What are the types of polystyrene foam adhesives for interior and exterior use?

To install extruded polystyrene foam outside buildings, a special cement-mineral adhesive mixture is used (for greater reliability, the slabs are additionally secured with special umbrella dowels).

Let's consider the characteristics of the most popular brands of adhesive for polystyrene foam boards.

• Penoplex FASTFIX glue is a special polyurethane adhesive designed for gluing thermal insulation boards made of extruded polystyrene foam to various types of bases: concrete, stone, aerated concrete, metal, brick, ceramic and expanded clay concrete blocks, plaster, etc.

The glue is sold in 750 ml metal containers (like professional polyurethane foam).

The composition has high adhesion to most building materials, and the convenient release form allows the use of a quick and convenient application method using a special mounting gun.

Penoplex glue can be used for installing thermal insulation on external walls, foundations and bases of buildings, but more often glue of this format is used for internal thermal insulation of premises and insulation of balconies of city apartments.

One 750 ml bottle is enough to glue 6-10 square meters of slabs.

• TechnoNIKOL adhesive foam for polystyrene foam is a modern polyurethane-based adhesive composition intended for the installation of thermal insulation boards in the process of insulating facades and internal walls of buildings.

The glue is sold in 750 ml metal containers. The foam is also suitable for sealing gaps between installed insulation boards. The composition is resistant to moisture, mold, and aging.

One 750 ml cylinder is enough to glue 10-12 square meters of slabs.

• Adhesive for expanded polystyrene Ceresit CT 83 (Ceresit 83) is a universal cement-mineral adhesive mixture for installing expanded polystyrene boards to various bases when performing external wall insulation work.

It can work at temperatures from zero degrees, has high adhesion to concrete, brick, aerated concrete, ceramic and expanded clay concrete blocks.

To prepare the glue, just pour the mixture into water and mix thoroughly. The average consumption of dry mixture is 5 kg per square meter.

• Adhesive for expanded polystyrene boards Bitumast based on modified bitumen is a ready-to-use adhesive composition intended for installation of insulation boards to bases made of brick, concrete, metal, wood and other building materials.

Using bitumen you can glue insulation boards together. The absence of toxic components allows it to be used for not only external, but also internal work.

READ MORE: Leveling the floor with tile adhesive: is it possible?

Overview of adhesives

Adhesive compositions for interior and exterior use differ in composition and characteristics. They can also have different consistencies and be sold as a dry or ready-to-use mixture. The only property that all types of glue have in common is the prohibition on the inclusion of any solvents. Contact of gasoline or acetone with the insulation is unacceptable, because these substances can burn through it.

As for adhesive foam, this type of product is very convenient to use due to its ease of application. The finished composition includes all the necessary components that allow you to quickly and efficiently glue products. However, it should be noted that this glue dries very quickly. It is most often used as a one-time use product.

Dry formulations allow you to use them several times, mixing the mixture in portions as needed.

Foam adhesive for exterior use has a polyurethane base and is sold in cans, which simplifies the application of the composition to sheets of material. Unlike bitumen products, it dries quickly, so there is no need to support the material. The product gains strength within a couple of hours.

Adhesive compositions intended for working with polystyrene foam boards can be divided into two types:

• dry products;
• polyurethane solutions.

The differences between these groups lie in the method of breeding, packaging, appearance, as well as the technique of processing the material.

In addition, products for working with polystyrene foam can be divided into compositions for separate use and universal products. The latter variety has a wider scope. Such compositions can not only perform basic functions, but also serve as a means for reinforcing slabs with mesh. Their disadvantages include average quality characteristics. However, this drawback is justified by the affordable cost of the product. For more reliable installation, you should give preference to adhesive solutions or mixtures of a narrow spectrum of activity.

For outdoor use

The most suitable composition for external work with polystyrene foam boards can be considered bitumen adhesive, despite the fact that it contains a solvent. This component does not pose any danger to the insulation. The products are sold completely ready for application. To glue the surfaces together, bitumen adhesive must be applied to the wall.

The next popular type is cement adhesive, which is perfect for working with brick bases, concrete and cinder block walls, as well as for fixing ceiling tiles. Typically, this mixture is sold dry, and for preparation the powder is diluted with water. The disadvantages of dry products include the fact that it takes some time to dilute the glue to the desired consistency. However, the cement-polymer composition and low cost make the product very popular. It is suitable for cases where extruded polystyrene foam is used as insulation.

In room

When installing expanded polystyrene boards indoors, it is necessary to use compounds that meet the following requirements:

• high level of adhesion;
• absence of toxic substances in the composition;
• resistance to temperature fluctuations;
• quick installation and minimal leakage.

In apartments and houses with a constant positive air temperature and minimal humidity, the slabs can be glued to the surface using PVA glue. In rooms where the humidity level is quite high, it is better to use rubber-based glue. Such products perform well when working with metal, plastic, concrete, wood and ceramics.

Dry gypsum mixture can be used for surfaces with base defects. This group includes Knauf Perflix glue. This is a completely natural product that is intended for interior use only.

When working with decorative elements and ceiling surfaces, you should opt for water-soluble compounds. Such products are white in color, so they allow you to hide as much as possible all existing seams and joints between sheets of material.

Application area

To dilute polymer cement glue, use a drill or mixer.

continuous or applied with a notched trowel. The surface to which it is mounted must be cleaned and coated with a primer. The inconvenience is the need to fix the plates for 20 minutes until the adhesion becomes sufficiently stable. Disadvantages also include toxicity and flammability.

The advantage of bitumen-latex emulsion mastic is that it can be applied even to a damp base. The mastic does not need to be heated before use. It consists of fine bitumen, synthetic rubber, and special additives. Resistance to cold and moisture makes it possible to use mastic as a waterproofing coating over polystyrene foam boards. The consumption of the product is from 1 to 2 kg per m2, depending on the presence of unevenness on the concrete surface, and the drying time is from 3 to 24 hours.

Scheme of applying glue to a sheet of foam plastic.

“Master” silicone adhesive can be used to glue foam plastic to a concrete surface both outside and indoors. A viscous liquid based on dimethylpolysiloxane rubber undergoes a vulcanization process in air in about a day. Neither frost nor heat can interfere with it, since it is carried out in a wide range of temperatures: from -60 to 300°C. Toxic substances are not released during vulcanization, and the strength of the seam between the materials is very high.

Polyurethane foam Ceresit CT 84 is a specialized type of adhesive for expanded polystyrene. This modification does not have secondary expansion, which often causes seams to diverge between sheets of material. The foam is applied to the concrete surface using a mounting gun, and then the slab of insulating material is pressed against the floor or wall.

Extruded polystyrene foam is used to insulate walls outside and inside buildings. The material is attached to glue or a frame structure; the second option is rarely used, since the arrangement of the frame increases the cost of thermal insulation. Insulation with a thickness of 2-5 cm is suitable for walls; note that as the thickness of the thermal insulation increases, its soundproofing qualities also improve.

When insulating the floor, polystyrene foam boards are laid on a cushion of expanded clay or other low-density material, and concrete is poured on top. Such insulation protects from cold (ground floor) and noise (unlucky with neighbors), but requires raising the floor level, which is not always acceptable in an apartment.

When insulating foundations, the thermal insulation is fixed with glue to the base and additionally secured with mounting fasteners. The material protects basements from the cold and inhibits the release of basement concrete from exposure to the external environment.

On roofs, polystyrene foam is laid in front of the bitumen layer on the outside or between the ribs of the rafters inside the roofing pie. This applies to private houses; in apartments, thermal insulation is often used to insulate the outside of the ceiling of upper-floor apartments. In this case, insulation is laid on the attic side (with or without glue) and concreted on top or covered with a layer of fixing material (expanded clay, gravel, crumbs).

General information

Characteristics of penoplex

Penoplex can also be called extruded polystyrene foam. This is a popular material in the construction market. It has high thermal insulation properties. It is widely used for insulating facades and roofs, as well as for interior work. The production of expanded polystyrene began in 1941 in the USA. It obtained its technical properties thanks to the most complex processing using extrusion.

Feedstock is placed into the reactor and subjected to high temperatures and pressure. As a result, the existing components are saturated with a gaseous component. When the pressure is released, the mass begins to expand, forming foam. At the same time, the temperature decreases, which turns the substance into a solid. The mass is passed through extruders. It becomes like multilayer plastic. Most of the extruded polystyrene foam is occupied by air, purified from water vapor and having low thermal conductivity.

High production technology makes it possible to obtain a material that does not allow gases and water vapor to pass through, even if the installation of penoplex was carried out incorrectly. Closed cells of penoplex measuring 0.1–0.2 mm are filled with liquid when exposed to moisture. The water does not pass further and remains in the pores.

Advantages and disadvantages of penoplex

Extruded polystyrene foam

EPP does not deform and serves reliably for a long time. He is not afraid of temperature changes. It does not lose its properties from – 100 to + 75 degrees. It can be installed even in the harsh North.

The antiseptic properties of polystyrene foam lie in the fact that it is not at all susceptible to rotting. Working with him is a pleasure: installation is easy. Penoplex slabs do not cause allergic reactions upon contact with it.

Penoplex

The material is light and has a small thickness from 20 to 150 mm. The price-quality ratio pleases consumers. Extruded polystyrene foam is inexpensive and can be purchased by many who decide to renovate a private home or build a new residential building.

Comparison results

But extruded polystyrene foam also has a number of disadvantages: it is susceptible to combustion, is susceptible to exposure to infrared rays, and at temperatures above + 75 degrees it releases substances harmful to human health. One of the important disadvantages of expanded polystyrene is its destruction under the influence of solvents and abrasives. Therefore, a number of requirements are imposed on adhesives for extruded polystyrene.

What kind of glue should be used for extruded polystyrene foam?

Adhesive for penoplex must have the following qualities:

1. moisture resistance;
2. resistance to temperature changes;
3. high adhesion;
4. do not emit harmful substances;
5. do not be too liquid so as not to leave drips.

Prohibited components of polystyrene foam adhesive

Penoplex adhesive should not contain certain components that negatively affect the structure of the materials, corroding it.

The composition of the adhesive for extruded polystyrene foam should not include:

• solvents;
• formaldehyde and formaldehyde;
• aromatics such as benzene and toluene;
• polyester and coal tars;
• flammable substances: gasoline, kerosene, diesel fuel.

Features of installation of polystyrene foam

Such mixtures are suitable for gluing EPS to plasterboard, brick, concrete, and cinder block bases. You need to breed them yourself, since they are sold in the form of dry mass. The composition includes mineral components, plasticizers, Portland cement, and a number of auxiliary additives. The mixtures are suitable for exterior work and interior decoration; they will hide all the unevenness of the base. The downside is the need for preliminary deep priming of the surface.

Ceresit CT-83

"Ceresit ST-83" is widely used for pasting building facades. It has excellent frost resistance and adheres well to wood, concrete, plaster, and brick. After drying, ST-83 is breathable. Consumption per 1 sq. m is small, because it is enough to apply the mass 1 cm thick (this is done with a notched trowel).

The company also produces high-quality adhesive Ceresit CT 85, which is considered universal. High strength and ductility are due to the polymers included in the composition. But this product costs an order of magnitude more than the previous one, so builders prefer ST-83. Both materials are applied in intermittent stripes, slightly retreating from the edge for better air release.

Bergauf ISOFIX

Bergauf Isofix glue is a mixture of minerals, fillers, cement, sand, plasticizers, and special additives. Can be used for any indoor and outdoor use. Average consumption – up to 5.5 kg/sq.m. m, a thin layer (3 mm) is required. After dilution, the mixture is viable for 1.5 hours, it is possible to change the position of the plate on the wall within 25 minutes. The glue is sold in 25 kg bags and can glue extruded polystyrene foam to all types of surfaces.

Extruded polystyrene foam for insulating a balcony with Penoplex is an extremely useful and easy-to-use material. It is used as insulation, a decorative element (ceiling tiles, stucco molding, etc.) and many other similar areas.

In construction, extruded polystyrene foam or penoplex has gained its popularity due to its unique characteristics and extreme unpretentiousness.

Comparison of polyurethane adhesives for penoplex

However, it is also important to understand how to work with this type of material. You may need to use a special adhesive for extruded polystyrene foam. This is what we will now discuss in this article.

Bergauf ISOFIX

Technical characteristics of the adhesive mixture Ceresit CT 83.

Cement-polymer mixtures can be used to glue foam to brick, plasterboard and concrete surfaces. The mixtures contain Portland cement, a plasticizer and additives that enhance their properties. AQUALIT SK-106P glue is especially resistant to cold and moisture. A special feature of using ANSERGLOB BCX 39 adhesive is the need for deep priming.

Under the CERESIT brand, a whole range of dry mixtures are produced: both universal and specialized. The ST-85 adhesive is universal. It contains a large number of polymers, which makes the mixture very durable and increases its ductility. However, expensive additives significantly affect the cost of the glue.

Using a product prepared from dry cement-polymer mixtures, you can glue foam plastic to concrete, even if it has an uneven surface. In this case, the glue must be applied to the plate of material in intermittent strips, retreating 2 cm from the edge of the sheet. Then the air from under the slab pressed to the surface will come out unhindered and will not form air pockets under it. For small unevenness, up to 3 mm, the mixture can be spread with a notched trowel.

Using a drill with a special attachment will make the process much easier. You just need to make sure that the nozzle is completely immersed in the solution, otherwise air bubbles will form in it. The mixture should then sit for about 5 hours, after which it is stirred again and used immediately. If the glue is not cured for the time specified in the instructions, the presence of water in it will interfere with quality adhesion. After all, foam plastic practically does not absorb moisture, and glued slabs of material will not allow it to dry out.

Useful tips

Recommendations from experts will help you choose the most suitable adhesive composition and glue the insulation as firmly and efficiently as possible:

1. Do not buy cheap glue produced by a dubious manufacturer.
2. Pay attention to quality certificates.
3. The glue sold on promotion may be expired - be sure to check the numbers on the packaging.
4. The mixture should be stored in a dry place in pallets and sealed. If storage conditions are violated, the technological properties of the product will suffer. If saturated with moisture, it will become unsuitable for use.
5. Do not dilute the hardened mixture with water, as this will cause the surface to subsequently crack and lose the properties of the product. Any unusable material must be discarded.
6. During fixation, air circulation must be ensured indoors.
7. Before installing insulation on metal surfaces, it is recommended to cover them with burlap. This will make it easier to attach the slabs and improve the quality of the connection.

It is better to insulate a house in the warm months of the year, when the weather is good outside, since it is difficult to work in rain and wind.

Selecting adhesive for extruded polystyrene foam

For fastening polystyrene foam, adhesives are used that are resistant to moisture and have high adhesive properties (adhesion). We advise you to pay attention to the glue:

• — Ceresit CT 83,
• — Tytan Styro 753 GUN (Poland),
• — Bergauf Isofix,
• — TechnoNIKOL No. 500.

READ MORE: White floor plinth in the interior, material, how to paint

Ceresit CT 83

Ceresit adhesive CT 83 is suitable for attaching polystyrene foam boards to facades, as it can withstand sub-zero temperatures and has high adhesion to concrete, brick and plaster. After drying, the composition is vapor permeable, and it is mixed in a plastic container using a mixer. The adhesive mixture is applied to the wall at a thickness of 1-2 cm along the entire perimeter of the insulation; it is advisable to use a notched trowel.

Tytan Styro 753 GUN

Tytan Styro 753 GUN adhesive is available in cylinders similar to polyurethane foam packaging, the cylinder capacity is 750 ml. The adhesive has a polyurethane base and is suitable for interior and exterior use. The composition is applied to the inside of the slabs in strips, after which the material is applied to the wall and lightly pressed with a level during parallel alignment.

The glue perfectly secures polystyrene foam boards to:

1. - Plaster,
2. — Concrete,
3. - Tree,
4. — Mastic,
5. — Cement base,
6. — Cured polyurethane.

When heated, the glue does not release isocyanates and is resistant to fungus, mold and heat up to 90 degrees.

Bergauf ISOFIX

Bergauf ISOFIX adhesive mixture consists of cement binder, mineral filler, sand and modifying additives. Used for external and internal work, mixture consumption for a layer of 3 mm is 4-5.5 kg per m2 of insulation. The finished composition must be used within 90 minutes, and glued slabs must be adjusted within 25 minutes. The compressive strength of the adhesive after 28 days is 7.5 MPa, and the bending strength is 3 MPa.

The composition is suitable for almost all substrates, including drywall, bag weight 25 kg.

TechnoNIKOL No. 500 balloon adhesive is practically no different in its characteristics from Tytan Styro 753 GUN, although it costs a little less.

Use extruded polystyrene foam for the intended purpose provided by the manufacturer and do not buy unknown but cheap adhesives for its fastening - this is the road to losses, and not the path to savings.

How to glue polystyrene foam? To fasten the slabs, you can use different means that have different components. But there are specifics to using mixtures. So, it is better to use one for gluing to a concrete base, another for attaching to a brick wall, and another for winter work. There are adhesives that combine the properties of fastening material and insulation and have low thermal conductivity.

Before purchasing, it is important to clarify that the product contains no substances that corrode polystyrene foam. This:

• acetone;
• alcohol substitutes;
• toluene;
• esters;
• other solvents.

The ideal option is to purchase specialized formulations, because their manufacturers have already taken into account all the important points. There are three main types of products that are suitable for gluing material. This is a plaster-adhesive mixture of different brands, polymer adhesives and bitumen glue (mastic).

People often use “liquid nails” in a bottle, silicone sealants, frost-resistant tile adhesives, drywall and tile products for gluing materials. Can I use them? Experts say that the use of such adhesives is possible, especially if additional fastening of the structure with dowels is planned. But the cost of the work can be much higher, so it is better to buy products designed for XPS.

Attaching heavy objects to plasterboard walls

When decorating the interior of any room (residential, office, etc.), we often face a difficult choice - what to give preference to: functionality or aesthetics? On the one hand, you don’t want to unnecessarily clutter the useful space of a residential building or apartment with unnecessary furniture, but you also want to decorate the room in some way elegantly. But on the other hand, you have to put up with the fact that a lot of things that are used in everyday life will have to be placed somewhere. If the house or apartment has significant dimensions, then solving this dilemma is not difficult. It’s a different matter when the space in the room is very limited.

In some cases, a compromise between the functionality and aesthetics of a room can be found using conventional redevelopment, which, if desired, can be done independently using plasterboard sheets (GCR). It is quite convenient to work with such sheets when constructing almost any spatial structures. Laying tiles on drywall, covering it with wallpaper, applying textured putty, simple painting and other finishing work also does not present any particular difficulties.

Today, drywall is used not only widely, but almost everywhere. It is rare that any modern renovation can be completed without the use of gypsum boards. Today, depending on the operating conditions and the requirements for the room being repaired, ordinary plasterboard, moisture-resistant, fire-resistant and moisture-resistant, is used. Such a fairly wide range of products makes it possible to use plasterboard with equal success in the bathroom, kitchen, living room, bedroom and other rooms with their own specific characteristics.

Sometimes you can hear that drywall should not be used in the kitchen or bathroom. It’s as if even moisture-resistant sheets cannot withstand prolonged exposure to an atmosphere with high relative humidity, and in a kitchen they also absorb odors. Actually this is not true. Moisture-resistant gypsum boards contain special water-repellent additives in the gypsum core, and the construction cardboard, which is the jacket of the gypsum boards, is additionally impregnated with a bactericidal composition, which provides reliable protection against the formation of mold and mildew. In addition, the walls of the bathroom or kitchen are often tiled. Tile on plasterboard provides additional protection to the gypsum board itself, and is also easy to maintain and easy to clean. So, tiles - on drywall installed on the wall, paint on the ceiling, and the ceiling of your bathroom or kitchen under reliable protection from any external influences.

How to combine aesthetics and functionality?

If you have started a renovation and decided to use gypsum boards for these purposes to level the ceiling and walls, you should at the same time pay attention to the decor of the future interior, because plasterboard is an excellent material for constructing various niches, arches, multi-level ceilings, decorative partitions, fireplaces, even plasterboard cabinets and other unusual but original elements of room design.

Some of these bright decorative elements that simultaneously combine functionality and aesthetic properties include niches, shelves, arches, etc. designed for installation of plasma or TFT TVs.

Polyurethane products

Any polyurethane adhesive is seriously different from the dry mixtures described above. They are often called “glue-foam”, “foam-glue”, because the compositions are sold in cylinders, and to use them you need a construction gun. They are used in the same way as polyurethane foam. Polyurethane adhesives for EPS are usually used for exterior applications; they have strong adhesion and are easy to use. The products dry quickly, are economical, do not react to changes in weather, and are frost-resistant.

Tytan Styro 753 GUN

Produced in 750 ml bottles, suitable even for interior work. This polystyrene adhesive is applied in thin strips, then the material is immediately applied to the wall. It can attach EPS to a base made of plaster, concrete, wood, mastic, cement, and is capable of reliably gluing sheets of expanded polystyrene together.

TechnoNIKOL adhesive is widely used for fastening polystyrene slabs to foundations, walls of houses, roofs, in basements, and on floors. The gaps between the insulation boards are also sealed with glue. The adhesion of the product is high even where there is mold, high humidity, and fungus.

The product is considered effective for fastening EPS slabs to bases made of concrete, aerated concrete, brick, and ceramic blocks. Packaged in standard 750 ml bottles. It is characterized by high strength, the quality of adhesion to the base is one of the best among analogues. The adhesive is incompatible with bitumen compositions, polyethylene film, and Teflon.

Tytan Styro 753 GUN

How to glue penoplex

So how to glue penoplex to concrete? There are several options:

• Special glue is mixed in strict accordance with the instructions; is applied to the penoplex slab in strips to prevent the formation of an air lock, then the slab is fixed, and excess glue is removed.
• "Liquid Nails". Toxicity requires working in protective gear; such glue has high moisture resistance and heat resistance. Hardens within half an hour.
• Special material – adhesive foam. Inexpensive, high-quality material, very easy to work with, allows you to seal the gaps between the slabs during installation.

Polyvinyl acetate adhesives

Polyvinyl acetate is a transparent, elastic polymer produced by the polymerization of vinyl acetate. This glue is considered universal because it can bond any hydrophilic materials. These adhesives do not rot and prevent the appearance of fungus.

"Moment Joiner"

Universal polyvinyl acetate adhesive, widely used in repair work. It is packaged in containers of 0.1-30 kg, so you can easily select the required weight. “Moment Joiner” dries quickly, does not corrode surfaces, and holds expanded polystyrene sheets very reliably.

PVA-MB

Do not confuse the product with regular PVA glue. This material is a reliable polyvinyl acetate emulsion with a number of plasticizing additives in its composition. PVA-MB dries more slowly than Moment, but the seam is considered stronger. You should not buy glues that are too cheap; PVA is often counterfeited.

PVA-MB

general information

Saving resources is always important, especially when the cold season comes. Thinking about alternative ways to conserve thermal energy, many decide to insulate themselves using heat-insulating boards. Not so long ago, an interesting type of insulation appeared on the market - polystyrene foam, which is a modernized version of the polystyrene foam we are familiar with. Possessing a more efficient heat transfer coefficient, it is used for external cladding, in foundation bases, and in the construction of roofs and ceilings. Expanded polystyrene (PPS) is a material for insulating facades. This is a polymer that is swollen/filled with gas. It has a closed granule structure. Almost one hundred percent gas content in the composition gives it impeccable heat-insulating and sound-absorbing properties. Choosing adhesive for polystyrene foam is not as easy a task as it might seem at first glance. The product you like may have contraindications and incompatibility in use. The main thing is that the glue does not contain substances that can dissolve the EPS structure:

• xylene
• acetone
• toluene
• drying oil
• formaldehyde
• epoxy resin
• polyester resin
• gasoline-kerosene-containing substances

If you are convinced that the composition of the glue does not threaten the integrity of the polystyrene foam, you can buy it.

Linoleum

It is very convenient and reliable to fix linoleum on a concrete floor with glue. The managers of the store where the flooring will be purchased will tell you how to glue linoleum to concrete. Linoleum manufacturers strongly recommend purchasing glue along with it.

Typically, linoleum is fixed to concrete using mastic. Its advantages:

• You can choose the right quality according to the type of linoleum. The fabric base of linoleum requires the use of dispersion glue, and in the absence of a base, synthetic mastic is used.
• The compositions of all adhesives have excellent characteristics in terms of waterproofing properties, strength, and water resistance.
• Resistant to environmental influences.

In addition to their composition, mastics also differ in purpose. There is a mastic for fixing that has increased stickiness and is economical in consumption, and for continuous gluing, the one that should be applied to the floor in an even layer over the entire area is suitable. The thickness of the layer depends on the brand of mastic.

Properties of foam plastic

Foamed polystyrene is a lightweight white polymer consisting of tightly compressed balls containing air. Polystyrene foam is very popular due to the following advantages:

• affordable price;
• ease of processing;
• non-toxic;
• inability to burn independently;
• waterproof;
• high thermal insulation potential;
• frost resistance;
• good sound insulation;
• resistance to fungus and other microbiological factors.

Styrofoam

Cement-polymer

ANSERGLOB BCX 39 adhesive is designed for fixing heat-insulating materials to concrete, wood or brick surfaces. The product contains plasticizer and Portland cement, as well as additional components. Before applying the glue, the surface must be treated with a deep penetration primer.

"Aqualit SK-106P" provides reliable fastening of the insulation to the facade of the building and is resistant to low temperatures and moisture.

"Ekomix" is used for indoor work, as well as for installing a covering layer of thermal insulation.

“Master Super” is used when fixing insulation to load-bearing walls.

Advice! If an adhesive mixture is used, it must be used within 60 minutes after mixing, as it will become unusable later.