How to glue the foam together: the types of compounds that can be used

Available to all

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

To use this method of gluing, the glue is applied with a brush on both glued surfaces. In case of increased porosity, apply glue, filling the voids, and let it dry. Gluing should be done after reapplication. Provide an initial firm pressure and subsequent fixation of the position of the plates.

Main varieties

When choosing an adhesive for splicing plywood, it is necessary to take into account the requirements for such compositions:

ease of use;
viscous or semi-viscous consistency;
fast hardening;
lack of volatile toxic substances in the composition;
resistance to moisture;
the presence of antiseptic properties (not exposed to bacteria).

> Any formulation is used for indoor plywood. For splicing material used outdoors, synthetic glue is suitable, for moisture-resistant boards - based on urea resin.

Water or water-dispersive

Among such adhesives, PVA is more popular. These products are based on toxic substances and components that emit unpleasant odors. The glue gains sufficient strength in a day, but it takes 2-3 days for complete hardening. Due to the fact that the basis of PVA and other similar products is water, these products cannot be used for gluing plywood sheets with a porous surface that absorbs moisture.

Joiner

The basis of the carpentry compositions are animal fats: casein and albumin. Both products are available in the form of a dry mixture, which must first be diluted in water. Albumin compounds are used for hot gluing, due to which the created joint gains strength faster.

Based on urea and phenol formaldehyde

Adhesives on this basis contain natural resins that are less toxic than epoxy ones. Compounds of this type are used exclusively for splicing wooden products. Glue with such a base creates a transparent seam, therefore such products are used to repair decorative elements.

Epoxy and polyurethane

Such formulations are based on solvents containing toxic substances and emitting a pungent odor. Therefore, it is recommended to work with such products in ventilated rooms or outdoors.

Epoxy adhesives are classified into one- and two-component. Formulations of the first type are immediately ready for use. Two-component products consist of an adhesive and a solvent, which must be mixed before starting work. Such compounds are used for quick splicing of various materials, including wood.

Stages and features of work

Let's take a look at how to glue the styrofoam to the ceiling. Main steps:

De-energize the wiring.
Clean the surface from paint residues, whitewash, old wallpaper and other dirt.
Remove all irregularities with a depth / height of more than 1 cm. Otherwise, the foam may break when gluing.
Treat the ceiling with a special primer with antiseptic components. It not only protects the surface from the development of mold, but also improves adhesion to the foam. Let the primer dry.
Mark the surface.Styrofoam boards can be laid in one of several ways: start gluing whole elements from the luminaire, from the center of the ceiling or from one of the corners. To create marks, it is convenient to use a contrasting color thread, fixing it with tape.
If necessary, resize the foam to the desired size using the assembly knife.
If using aerosol adhesive, insert it into the gun, cut off the tip, and squeeze the adhesive onto the back of the foam board. Usually stripes are made around the perimeter at a distance of 2-4 cm from the edge and diagonally. You can apply glue pointwise - in the corners and in the center.
If a dry mixture is used, it should be diluted with water and mixed thoroughly. It is applied to the foam with a small notched trowel at least five points evenly distributed over the area. You can lubricate the board with a continuous thin layer of glue.
Press the plate to the surface and hold it for a few seconds. Remove any excess glue that has come out with an even trowel or a clean, damp cloth.
In the same way, glue the next tile back to back to the first. If the gap between the elements is more than 2 mm, it should be filled or blown out with polyurethane foam.

When insulating walls, the foam is glued in the same way. Usually, the sheets start from one of the corners. After applying the glue, the slabs must be pressed against the wall using the building rule, and they must be leveled. If additional fasteners are used, then it is necessary to wait until the glue is completely dry, and then drill holes and drive in the umbrella dowels.

Polyfoam is an inexpensive and high-quality thermal insulation material that is used in household construction in residential and utility rooms. To fix it, dry compounds, aerosol adhesives and "liquid nails" are used. Powdered mixtures are cheaper, but ready-made products are more convenient to use. For outdoor work, the foam plates must be additionally secured with dowels.

How and how to glue polystyrene Big test - Glue foam, Reinforcing glue, Polyurethane foam

Adhesive for expanded polystyrene

When installing thermal insulation, polystyrene foam is simple in processing and fitting, and in installation. A combined method of fastening is recommended - additionally fasten the plates installed on the glue with dowels. Since various solvents (gasoline, acetone, ethers) dissolve the expanded polystyrene itself, adhesives based on them cannot be used.

There are mastics specially developed for expanded polystyrene bitumen-based and cement-based-polymer mixtures. These compounds provide a reliable connection to almost any base - concrete, brick, blocks of various types, drywall and serve as additional waterproofing.

If there are no special requirements for the installation technology, and also depending on the amount of work, you can use many of the available adhesives - silicone sealant, liquid nails, tile adhesive. When installing ceiling plinths or a baguette, spot or thread application of glue is enough, so a tube of sealant or liquid nails is more than enough to install them in a standard apartment. The technology for applying tile adhesive is the same as when installing tiles - applying over the entire surface and removing excess with a comb trowel.

4 Dry formulations for polystyrene - we knead the formulations with our own hands

An alternative to adhesives is dry mixes for outdoor use, which contain various additives in addition to polymers themselves. These additives include various plasticizers and mineral fillers. As a rule, packing is carried out in paper bags weighing from 5 to 25 kg. As you can see, the packaging is not as convenient as small foam cylinders; when buying several bags, certain difficulties may arise with delivery home, which must be taken care of in advance.

Instead of adhesives, dry mixes are often used for finishing work.

The use of dry mixes has a number of advantages. The most important thing is the price, which is significantly lower in comparison with adhesives. Working with the mixtures is quite simple, but everything must be done carefully so as not to drop the particles of the solution on the floor. The quality of the adhesion of the polystyrene to the surface is very high, because even the manufacturers of polyurethane glue can envy the reliability and strength of the attachment of the plate to the wall. In addition, with the help of a solution, you can glue the styrofoam to wood, brick, or other foam sheet. The only exception is metal surfaces, which absolutely do not hold the solution.

An important point is mixing the solution. To do this, we need a small, clean container that is filled with warm water. The correct ratio in most cases is one kilogram of dry matter per 240 ml of water. However, in some cases, the proportions may be different. In any case, the instructions on the package always indicate the optimal proportions specifically for the solution you have chosen.

The mixture is introduced into water gradually, while constantly stirring the solution is required. To achieve the required degree of homogeneity of the mixture, it is best to use a construction mixer. Having received a solution of the desired consistency, let it brew for 10 minutes, after which you will need to mix everything thoroughly again. This is to ensure that the mixture does not harden immediately after application to the foam. Otherwise, it will be very difficult to work with plates for pasting them on the working surface.

It is better to use a construction mixer to mix the mortar.

Then everything is very simple. Using a spatula, the resulting solution is applied to the foam tile, which is glued to the wall. Again, you need to make a little effort so as not to harm the tile. But it must fit snugly against the wall, otherwise the wind can knock it out of place.

3 Polyurethane adhesive is the best choice for foam finishing

Polyurethane adhesive is ideal for handling foam. It is very durable and reliable. It is quite simple and convenient to work with it due to its packaging in the form of a small spray can. The glue itself is applied to the boards in the form of foam. Polyurethane belongs to the category of one-component materials, which include polymers of isocyants. The presence of this component provides a remarkable level of adhesive viscosity, which allows it to set well literally immediately after the foam is applied to the working surface.

Polyurethane adhesive is ideal for pasting with foam

The most popular is the polyurethane foam adhesive produced under the name Tytan Styro 753. This outdoor adhesive boasts many advantages, among which are the following:

Frost resistance - the glue is used to work in the coldest regions of the country, where temperatures can drop to very low rates
Moisture resistance - the facade, insulated with foam plastic using polyurethane glue, copes without problems with direct contact with water, even with prolonged exposure
Complete absence of harmful substances, for example, freons, which negatively affect the health of children and adults
Fast drying, which makes it possible to carry out all construction operations much faster, significantly saving time
High level of adhesion - this property allows Titanium glue to be used on various surfaces, including metal, stone, wood, and, of course, concrete or brick

Working with Titan Styro 753 is very simple. However, you will need to purchase a special assembly gun, since the glue is available in small containers. By the way, exactly the same gun will be required when working with polyurethane foam.But before gluing the foam to the wall, you will need to carefully prepare the work surface. This applies to cleaning the wall from dirt and fat deposits. In some cases it may be necessary to prime the wall. Such a need arises in the case of pasting hygroscopic surfaces that absorb moisture quickly enough. You can proceed to pasting only if the wall is perfectly clean and there are no defects such as swollen areas or crumbling elements on it.

Now let's go directly to the pasting process. To improve the consistency of the foam, the can must be shaken several times. Then it is inserted into a special hole in the assembly gun, after which the glue is squeezed out and applied to the foam surface by pressing the trigger. Next, the slab is attached to the wall. You will have about 20 minutes to change its position, if necessary. In any case, you need to put a little pressure on the stove so that it grips more firmly with the wall. Naturally, too much pressure should not be applied, otherwise there is a risk of breaking the foam.

The glue should be applied to the surface of the board and then pressed against the wall.

Everything, now it only remains to wait a little. It will take a little less than two hours to completely dry. As you can see, there is nothing difficult in gluing the walls with polyurethane glue. This is a very quick procedure that requires almost no additional tools, except for the assembly gun. Everything is done very simply, easily, without unnecessary debris and dirt. The only drawback of Tytan glue is its cost, which makes some people prefer other options.

The most common ways to glue foam sheets together

All brands of glue available in home use can be divided into two groups in terms of strength:

The most durable one- and two-component adhesives based on epoxy, polyurethane, rubber polymers. With these brands of glue, you can qualitatively glue foam plastic to any foreign material;
Assembly adhesives for common use. These include adhesives for tiles, bituminous compositions, acrylic, polyvinyl acetate emulsions and certain types of polyurethane resins.

For your information! In addition to the listed assortment, so-called model glue is used for gluing. dichloroethane based or acetone.

A distinctive feature of this glue is the highest adhesion of the glue mass to polystyrene. The glue gives a very strong bond and dries quickly enough, in almost a few seconds. Any polymer, even PVC, can be glued with this glue. The negative aspects include high toxicity and uncontrollability of the gluing process. With inept handling and improperly selected recipes, instead of gluing foam sheets, you can simply burn the material to holes.

The recipe for the glue is reduced to dissolving a certain amount of polystyrene or foam sawdust with a small amount of an alcohol-acetone mixture.

High Strength Foam Adhesives

If you had to look for an alternative than to glue the foam to the metal, then two-component epoxy and polyurethane adhesives are the best. In order to glue two sheets of foam of any thickness, you only need to prepare an adhesive mass and apply it to the surfaces to be glued. The smoother the glued surface of two sheets, the higher the strength of the glue seam, the tighter the planes adjoin, the less glue consumption.

With epoxy adhesives, you can glue a large number of foam sheets into one large block. Often this method is used to obtain a blank for carving sculptural compositions, columns, porticos, decorative elements for fake fireplaces, colonnades, stairs and ceiling moldings.

With the help of epoxy polymers, you can coat the finished product and get an absolutely smooth and hard surface, almost visually indistinguishable from polished stone.

How to glue polystyrene correctly

The basic instructions for gluing polystyrene foam are simple, and the results are often not long in coming. However, there are some peculiarities that depend on your goals, the specifics of the glue and the raw materials themselves.

Styrofoam gluing instructions

Prepare everything you need for work - gluing material, glue, preferably rubber gloves. If the work takes place with large structures - small weighting materials to press and better fix the raw material.
Depending on the glue used, apply it with a brush (if we are talking about ordinary liquid glue), with a gun in several strips, or spray it onto the surface. If the target is not a strong and clear fixation, it can be applied pointwise, along the edges and several points in the center.
Attach polystyrene (expanded polystyrene) to each other and, if the situation so requires, press down with weighting materials. Leave everything for a certain time with glue and material dimensions (from 20 minutes to several hours).
Use the result as intended, removing the weighting agents and checking the quality of the work done.

Features are the use of specific tools and methods. For example, some adhesives foam when they are on paralon for a long time or polystyrene foam - for this you have to remove the remnants from time to time with a sponge or rag.

It is important to monitor the temperature level when using hot glue. If the temperature is too high, the glue easily corrodes the entire surface, making subsequent gluing almost impossible.

What kind of foam is needed - features of the preparation of glue

There are several types of polystyrene foam. Non-pressed (granular) in appearance is a lot of interconnected balls that crumble strongly. It is he who is best suited for preparing glue. Pressless foam dissolves quickly in acetone or gasoline, becoming a sticky mass.

It is not so easy to crumble pressed polystyrene foam. It can also dissolve, but due to the difficulty in preparing adhesives, it is not used. Extruded polystyrene is durable, homogeneous, with a smooth surface. The material is not suitable for the manufacture of a sticky mass.

You can use foam glue on an ongoing basis - it serves for a long time, is not afraid of frost and heat. With the help of the tool, it is possible to save on repairs if you follow the tips and rules.

What are the types of glue for expanded polystyrene for indoor and outdoor use

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

Consider the characteristics of the most popular brands of glue for expanded polystyrene boards.

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

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

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

Penoplex glue can be used to install thermal insulation on the outer walls, foundation and basement of a building, but more often this format is used for internal thermal insulation of premises, insulation of balconies of city apartments.

One 750 ml can is enough for gluing 6-10 square meters of boards.

Glue-foam TechnoNIKOL for expanded polystyrene is a modern adhesive based on polyurethane, 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 cans. The foam is also suitable for sealing gaps between installed insulation boards. The composition is resistant to moisture, mold, aging.

One 750 ml can is enough for gluing 10-12 square meters of boards.

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

You 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, it is enough to pour the mixture into water and mix thoroughly. Dry mix consumption averages 5 kg per square meter.

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

With the help of bitumast, insulation boards can be glued. The absence of toxic components in the composition allows it to be used for carrying out not only external, but also internal work.

Glue in a bag

Before purchasing dry building adhesive mixtures, be sure to make sure that they can stick the foam.

Brought into working condition by mixing with water, they are used both for gluing foam plastic to the wall, and for gluing plates together. Some mixtures are also used to create a reinforcing layer over insulation using fiberglass mesh.

Use a heavy-mix mixer and a slow-speed drill to prepare the mix. The amount of water used for preparation is indicated on the package. It is better to apply the glue to the polystyrene with a flat spatula, followed by leveling the layer with a comb.

Filling the joints between the slabs with an adhesive mixture when laying the foam on the wall allows the slabs to be firmly glued together. The resulting connections are tight, strong, frost-resistant, not afraid of moisture.

There is no need to protect yourself from the effects of harmful factors when working with dry mixes. They simply do not exist.

IMPORTANT

Before gluing the foam, clean it from dust and foreign deposits with a dry cloth.

Practical recommendations

Helpful hints:

In the case when the foam starts from the material to which it is attached to peel off, then in this situation you should throw it away and start all over again.
If the layer of adhesive that has already been applied has dried, and you glued the part, then the fixation will no longer be reliable. You need to try to carefully cut it off or, in extreme cases, try to scrape off and apply a new layer.
For example, the glue, in your opinion, dries longer than you expected, then you need to pierce the pieces of foam with toothpicks and thereby increase the access of oxygen to such places, which in turn will greatly speed up the process of solidification of the glue composition.
Be aware that water evaporates poorly from water-based adhesive. This has a negative effect on the bond strength. In this case, you need to quickly introduce gypsum into it, which is able to quickly absorb moisture.
Polyfoam should not be glued together with a gun designed for hot glue, since when exposed to high temperatures it can simply melt and, moreover, can release such toxic substances as styrene and benzene.
The adhesive mixture must be applied only after diluting it with water immediately before use, since if such rules are not followed, its properties will suffer.

Such a common material, if desired, can be glued even by a person who does not have certain skills and experience in such work. Currently, there are a lot of different products on sale that have been developed precisely for such purposes. Among them are various mastics, all kinds of adhesives, sprays, liquid nails, polyurethane foam, etc.

When choosing such materials, you should definitely pay special attention to their composition and date of manufacture. They should not contain acetone, gasoline and a number of other organic solvents.

Only for him

Specialized foam adhesive is made on the basis of polyurethane foam. In combination with additives-thickeners, it is a translucent thick liquid. Most often they are used for decorating interior walls and ceilings of premises with foam products.

Suitable for outdoor use. Frost-resistant, does not absorb moisture. Sold in polyethylene containers. The downside of the application is the difficulty of applying to the glued surfaces, especially when the air temperature is close to zero. Alternatively, you can preheat the composition by placing the container in hot water.

Apply to the insulation in stripes, dots, wavy lines, depending on the width of the glued surface. A strong pressure is required for 15-20 seconds.

IMPORTANT

To speed up the process, fasten the sheets 2-3 minutes after applying the glue. This allows you to reduce the retention time of the material, improve the quality of gluing.

How to glue correctly

Having learned how to glue foam rubber, you need to familiarize yourself with the features of working with this material. There are many nuances of gluing foam rubber plates with different surfaces.

To get the most durable connection, consider some subtleties:

Remember to prepare materials before starting work. They need to be cleaned of dirt, degreased. For degreasing, it is recommended to take White Spirit.
Perform bonding at room temperature. The higher the temperature, the faster the adhesive will solidify.
Carry out the procedure strictly according to the instructions, do not increase the flow unnecessarily.

Foam rubber to foam rubber

After reading about how to glue foam rubber together, you should better know the gluing technology. It consists of several stages that follow each other.

These include:

Using a sharp clerical knife, cut off pieces from the foam plates of the desired size. The edges should be straight.
Degrease the work surfaces.
It is advisable to buy an aerosol adhesive. Spray it on the material to be bonded.
Press the cut pieces together. Release the pressure after 2-3 minutes.

The exact amount to be applied is indicated on the packaging of the glue, i.e. how many layers are required and how long to wait for solidification.

How to glue foam rubber to wood

Several types of furniture glue for foam rubber have been described above. Such products indicate the ability to work with certain surfaces

Please note that they are sometimes only for these purposes, i.e. not universal

There are a number of peculiarities of working with such a composition.

Here are some of them:

Before starting to work, surfaces must be cleaned of dirt and dust.
Use a special adhesive gun.
After applying the glue to the foam and wood, as indicated on the package, use a press to create a secure connection.

It is important to do everything as described in the instructions in order to the seam is strong and durable

Foam rubber to metal

Not everyone knows the interesting point of how to glue foam rubber to metal. The difference between these two materials can raise many questions about their connection.

Step-by-step instruction:

Apply the adhesive to a metal surface using a roller, brush or special gun.
We must not forget about the preparation of the metal before starting work. To do this, it is cleaned of rust, dirt deposits. Degrease with gasoline, acetone or alcohol.
Wait about 5-7 minutes.
Connect materials.

The last stage of the work is the use of the press (gravity).

To plastic

When choosing how to glue foam rubber to plastic, you need to remember that both materials have low resistance to aggressive chemicals. As a result, the adhesive components can damage the work surfaces.

The gluing process is the same as when gluing porous plates to wood. In this process, it is not advisable to use a weight to obtain a stronger connection. Also, it is not recommended to use acetone during plastic degreasing.

Foam rubber to fabric

Gluing foam rubber to fabric is not as difficult as it might seem at first glance. General instruction:

To obtain a reliable connection, the materials must be pre-moistened with water.
Apply glue to both parts in a thin layer.
Wait about 5 minutes. When a thin film appears on the work surfaces, it must be dried in the open air.
Apply a second layer of adhesive.
Wait 3 minutes and combine the materials.

The last stage is the heating of the finished joint with an iron, as indicated at the beginning of the article.

Types of foams

If we restrict the topic of using foam products to the sphere of building and repairing your apartment or house, then the main ones used are the following types:

Expanded polystyrene is the most common, cheapest and easiest to use. It is he who is known to everyone by trade packaging and it is he who is given the general name of the entire group by the population. A good insulation and sound insulator, therefore it is widely used for thermal insulation of building structures - wall, ceiling, facade, basement, but mainly as a middle layer due to the increased fire hazard. Another area of application of expanded polystyrene is decorative and design, it includes the manufacture of baguettes and cornices for the interior of premises, the design of facades and shop windows, decorative elements of furniture and toys.
Polyurethane foam in comparison with polystyrene foam has a wider field of application. The area of thermal insulation, in addition to construction, includes pipelines and equipment, not only with finished slabs and shells, but also with foaming materials at the work site. Polyurethane foam and foam rubber are well-known to everyone, and for many car owners it will be interesting to know that many of the cladding details - panels, bumpers, various linings - are polyurethane.
Polyvinyl chloride thermal insulation, skirting boards, baguettes, decorative tiles, furniture - a common direction of application for all foam plastics. Signaling and rescue aids (floats, buoys, rafts, vests), elements of devices for shock absorption, damping, noise and vibration damping (for example, a vibration damping mat or a protective helmet for industries with appropriate factors) are specific in comparison with other types.

Features of the adhesive composition

The use of solvents is always a safety hazard, so it is important to take all precautions. Gasoline, acetone are flammable materials, they are highly flammable. Work is carried out away from sources of fire, smoking nearby is strictly prohibited! It is advisable to work outdoors or in a well-ventilated area.

Otherwise, there is a risk of inhalation of solvent vapors.

Work is carried out away from sources of fire, smoking nearby is strictly prohibited! It is advisable to work outdoors or in a well-ventilated area. Otherwise, there is a risk of inhalation of solvent vapors.

You can also use glue as a protective film on wood products and other materials.You will have to make the solution more liquid, do not add too much foam to it. It is not worth preparing a large portion of the product, it instantly freezes and loses its properties. The drying speed depends on the thickness of the adhesive layer: for quick gluing, apply the mass with a thin smear.

How to glue styrofoam to styrofoam

Polyfoam is glued to each other with various mixtures and adhesives

When gluing, it is important to consider the type of material, its structure

When choosing mixtures for gluing this material, you should pay attention to their properties and composition. You should also take into account the composition of the glue, for this material you should choose means that do not include various solvents

Types of glue:

Foam adhesive. This type of glue is cheap and easy to use. The adhesive has good bonding properties. There are many brands of this glue nowadays.

Facade glue. This glue is designed to adhere foam to foam, concrete, plastic, wood, metal, and so on. The shelf life of this glue is average, about six months from the date of issue.

Polyurethane foam. The foam has very good properties and adheres well to polyurethane. The foam will stick the material firmly and permanently. It should be borne in mind that during gluing the foam dries quickly, and this can lead to unpleasant consequences. The tube through which the foam is squeezed out can become clogged, so it is best to clean it with a special solvent.

Polyurethane adhesive. This adhesive has good bonding properties. The only drawback is that it is sold in the form of cylinders and you need to buy a special pistol for it.

Liquid Nails. Liquid nails adhere very well to this material, but are not always reliable. Therefore, a simple glue should be used with this mixture. Approximately 50-70% of the surface is treated with glue, and the rest with liquid nails.

Dry mixes. The mixtures are very cheap and have good properties. Mixtures are diluted with water

Be sure to pay attention to the packaging before buying this product, it should be marked that it is suitable for foam.

Aerosol adhesive. This adhesive comes in the form of an aerosol can, so it is easy to work with.

The glue just needs to be sprayed onto the surface of the material. Freezes within 30 minutes. However, one cylinder is designed for only 10 square meters.