How to glue extruded polystyrene foam

How to glue extruded polystyrene foam Adhesive for extruded polystyrene foam - application features

Extruded polystyrene foam (that is, extrusive), also called EPS, is a popular material for insulating walls, floors, roofs and foundations.

During use, it will not give harmful fumes, but protect from dust, noise and cold. The material is used for the internal type of work, as well as outside the buildings, and it can be glued to the surface using special means.

Choosing an adhesive composition for expanded polystyrene is difficult, because the choice of adhesive for extruded polystyrene foam is very large.

Features installation of expanded polystyrene

Extruded type PPS is a foam type material with a high degree of density.

It is with this indicator that it will differ from simple polystyrene - foam. The density will increase during production as it passes through the extruder and this will seriously increase the thermal insulation performance of the materials. the end plates are made of polymer and fine air bubbles.

Please note that due to the smoothness of the extradited EPS boards, they have very poor adhesion to the adhesive. This is the main problem with gluing.

It is solved by the choice of special compounds, which in themselves will have a high degree of adhesion to any kind of surface. Some other types of products can partially dissolve the top of the foam boards, soaking into them.

The specifics of the installation of expanded polystyrene plates is as follows:

  • If the material was bought as a heat insulation agent for the floor surface, then it should be laid on a expanded clay pillow or on a gasket from other materials with low density, and also poured with concrete.
  • For foundation insulation, the slabs should be glued to the concrete of the base / plinth and fastened with mounting fasteners.
  • Lay materials on the roof, and then place a layer of bitumen or lay extruded polystyrene foam between the rafter ribs inside the roof layers.

  • When insulating the ceiling surface in an apartment, at the last stage, foam polystyrene should be laid from part of the attic onto the adhesive composition, and then concreted or covered with gravel, crumbs and expanded clay.

Consider how to choose an adhesive composition.

Choice of adhesive composition

How and on what to glue expanded polystyrene? For fixing the plates, you can use various means that have different components. But there is a specificity of using mixtures. So, for gluing to a concrete base, use one, and for attaching to a brick wall - others, for winter work there is a third type.

There are adhesives that are capable of combining the properties of the material for fastening and insulation, and have a low level of thermal conductivity. Before buying, it should be clarified that the product contains no substances that corrode polystyrene foam.These are alcohol substitutes, acetone, toluene, ethers and other types of solvents.

The ideal option would be to purchase special formulations, because their manufacturers have already been able to take into account all the important points. There are three other types of products that are useful for gluing the material.

This is a plaster-adhesive mixture of various brands, polymer compounds and bitumen glue (that is, mastic). People often use "liquid nails in a spray can, silicone-type sealants, frost-resistant tile adhesives, compositions for drywall, tile for gluing the material. Can they be used? Experts say that the use of glue for extruded polystyrene foam is possible, especially if additional fastening the structure to the dowels. But the price of work can turn out to be much higher, and therefore it is better to buy funds that are intended for extruded polystyrene foam.

Plaster and adhesive mixtures

How to glue extruded polystyrene foam Such mixtures are useful for gluing expanded polystyrene to brick, plasterboard, concrete, as well as cinder block bases.

that they are realized only in dry mass. The composition contains mineral components, Portland cement, plasticizers, and many more auxiliary additives. Mixtures are suitable for outdoor work and interior decoration , and they also hide all the flaws of the bases. The disadvantage can be called the need for preliminary deep priming.

Cerisite ST-83

This plaster glue is widely used for pasting building facades.

It has excellent frost resistance, adheres well to concrete, wood, brick and plaster. After drying, ST-83 will become breathable, and the consumption per square meter is small, because it is enough to apply a mass with a thickness of 1 cm (this is done with a notched trowel). Such a company will produce high-quality CT-85 glue, which is universal. The high degree of strength and plasticity is due to the polymers that are included in the composition. But such a tool is much more expensive than the previous one, and therefore builders prefer ST-83.

Both materials are applied in intermittent stripes, slightly receding from the edge for perfect air release.

Bergauf ISО FI X

The adhesive composition is a mixture of minerals, cement, fillers, sand, special additives, plasticizers. It is used for any premises and outdoor type of work. Consumption will be average - up to 5.4 kg per square meter, and a thin layer of 0.

3 cm is needed. After dilution, the mixture will be viable for 1.5 hours, and it is possible to change the position of the plates on the wall within 22 minutes. The adhesive is sold in 25 kg bags and can be glued to all types of extruded polystyrene foam.

Polyurethane products

Any polyurethane adhesive composition is seriously different from the dry mixes described above.

They are often called glue-foam, foam-glue, because the compositions are sold in spray cans, and a construction gun is required for their use. They are used in the same way as polyurethane foam. Polyurethane products for extruded polystyrene foam boards for outdoor use, and they have a strong adhesion and are easy to use. The products dry quickly, are economical, do not respond to weather changes and are frost-resistant.

Titanium Styro 753 GUN

How to glue extruded polystyrene foam to concrete? Use Titan glue, which is produced in cans with a volume of 0.

75 liters, and the glue is suitable even for interior work. This is a polystyrene glue that is applied in thin strips, and then the material is immediately applied to the wall surface. You can attach the slabs to a base made of plaster, wood, concrete, cement, mastic, and is also able to reliably glue polystyrene sheets together.

Glue foam "TechnoNIKOL"

Such an adhesive composition as TechnoNIKOL is widely used for fixing polystyrene plates on foundations, surfaces of walls of houses , roofs, floors and basements. The gaps between the insulation boards can be filled with the adhesive.

the adhesion of the product will be high even in places where there is mold, high levels of humidity and fungus.

Glue "Penoplex" Fastfix

The tool will be considered effective in order to fasten slabs to concrete bases, as well as bricks , aerated concrete, ceramic blocks. Everything is packed in conventional cylinders of 0. 75 liters. Everything is distinguished by a high degree of strength, and we are also talking about the quality of adhesion to the base - this is one of the best among similar ones.

By the way, the adhesive composition is incompatible with bituminous compositions, Teflon and plastic wrap.

Bituminous glue Bitumen

Mastic Bitumen is very similar in properties to a plaster-adhesive mixture, but will include bitumen, which plays a binding role. The advantage of the adhesive composition will be excellent compatibility with extradited polystyrene foam, and it also holds on to the material without any complaints for a very long time. the product has excellent waterproofing qualities, and also protects the joints of the outer walls from moisture.

Please note that you can easily knead the Bitumast agent, and it will take a couple of minutes, and no special tools are required (even a mixer is not needed).

It is also not necessary to warm up the product before use. The consistency is liquid, and therefore the application is carried out in a thin layer. The disadvantage of such a tool is that the mastic sets slowly, and it will take a long time to keep the sheets of expanded polystyrene from slipping.

Polyvinyl acetate adhesives

How to glue extruded polystyrene foam The agent will be an elastic transparent polymer, which is obtained by polymerization of vinyl acetate. such an adhesive composition is considered universal, because any materials of a hydrophilic type can be bonded.

These adhesives will not rot, and also prevent the formation of fungi.

"Moment Joiner"

Universal glue of polyvinyl acetate type, widely used in repair work. Everything is packed in containers of 0. 1 kg ..

. 30 kg, and therefore you can easily select the required weight. "Moment Joiner" dries out quickly, will not corrode the surface, and holds the expanded polystyrene sheets very reliably.


The product should not be confused with simple PVA glue. Such material is a reliable polyvinyl acetate type emulsion around plasticizing additives in the composition.

PVA-MB will dry out more slowly than "Moment", but the seam will be considered stronger. You should not buy very cheap adhesives, and PVA is often counterfeited.

Other compounds for gluing

Some craftsmen try to use "home" methods of fixing polystyrene boards, although this is not always reasonable.

Installation foams

Different types of surfaces can be bonded with this foam, including extruded polystyrene foam boards ..

. The price of foam is usually much less than that of similar canned adhesives. But the disadvantages of this method are obvious:

  • Slow adhesion to the base - plates that lie vertically will slide all the time.
  • In the adhesive composition there are special adhesion additives to improve, which makes it much more reliable in tearing than foam.
  • Polyurethane foam has the ability to grow in volume, and this can play a bad role in the construction of the material.

  • Foam will flake off walls rather than glue.

The advantage of foam will be the ability to fill the joints between the plates, and therefore it can also be useful in installation.

Hot melt adhesive composition

Thermoplastic type adhesives will include special substances based on polyamide, ethylene vinyl acetate, which become liquid when heated. As they cool, they begin to harden. For working with expanded polystyrene of the extruded type, such funds are suitable, but their price per 1 kg can be up to 1600 rubles.

The cost of work will not be the lowest. It will be more expedient to purchase a suitable special adhesive and carry out repair work economically, reliably and efficiently.