How to stick Styrofoam plates correctly


Styrofoam plates are popular means of insulating walls. They are very easy to cut and process. If you want to glue the polystyrene boards, you have to use the right glue for this. Classic adhesives are not suitable.

Choosing the right glue for the polystyrene sheets is very important

When processing and bonding polystyrene panels, it is especially important that you choose a suitable adhesive to bond the material to the substrate. Most classic adhesives are not suitable for this purpose. In some cases, it can even happen that the adhesives damage the material. For Styrofoam, you will find special adhesives in the hardware store, which can usually even be bought ready-mixed and which have been specially tailored to the material properties of the boards. Styrofoam adhesives are free of solvents that would destroy the plates or strips.

Helpful tips for processing and bonding polystyrene panels

It is best if you cut all polystyrene boards and strips before processing and bring them into the desired format. This saves you a lot of time in gluing and allows you to process the boards quite quickly. In the processing itself, you need some tools like the following:

  • the already cut polystyrene panels and strips of the same material
  • suitable polystyrene adhesive without solvent
  • a toothed spatula for applying the adhesive
  • a washable work surface
  • if necessary, some PU foam to fill in gaps
  • the best way to attach the plates and strips

How to proceed best when sticking the polystyrene sheets

The easiest way to do this is to immediately place the cut material on the wall or surface you are working on so that you can easily proceed in sequence. At the edges or in the corners, you usually use cut sheets or polystyrene moldings that you lay out exactly in the order in which they will be applied later. To apply the adhesive, it is best to use the toothed spatula with which you can apply the adhesive over a large area. Of course, you could also stick the polystyrene sheets selectively. However, you risk creating gaps that reduce the insulation effect. If there are still gaps between the individual panels, you can fill them with PU foam.

What you should pay attention to when gluing the plates

For polystyrene panels only adhesives are used that are solvent-free. At least as important, however, is to obtain as flat a surface as possible on which the polystyrene plates can be applied. The surface should be absolutely free of bumps or dents, otherwise the plates can break very quickly. Be sure to also remove any paper surface such as woodchip wallpaper or textured wallpaper. This applies to very thin plates that can break very quickly. If Styrofoam blocks are used instead, the risk of breakage is much lower. But even here the ground should be as level as possible.

Artikelbild: Bilanol / Shutterstock


Video Board: Styro Wars: Styrofoam Glue Tests