Spray filler: the fast alternative

In many cases, spray-on filler has long proven to be an excellent alternative to conventional filling. Where spraying putty is used, and what applications are possible, we can show you in this post.

Classic application: automotive area

The classic application of spray filler is in the area of ​​car painting. However, you have to distinguish fundamentally between spray filler and filler. Both terms are repeatedly confused.

In the automotive sector, the spray filler is a putty that is applied with the gun. As a rule, it must always be oversprayed with filler, as a paint applied to a spray-on filler would become dull over time.

Spray filler serves to compensate for unevenness. The application in spray form (occasionally also from the can), a particularly thin layer can be achieved, which would not be achievable with pasty fillers.

Spray filler on walls

Especially in the dry construction area, sprayed filler is frequently used. After the joints between plasterboard panels are reinforced and filled, the entire wall is often even with a very thin layer of leveling compound balanced.

Spray filler can be applied much faster and also in much thinner layers than with spatulas by hand.


Spray filler is available from various manufacturers, the filler has different properties. All spray fillers have some properties in common:

  • they are particularly quick-drying
  • they form very thin layers
  • they compensate even the smallest bumps.


The application is usually done with airless devices. For the use of spray filler but special nozzles are necessary. The equipment should be as professional as possible - an application in the home area is only possible if the corresponding devices are available or can be borrowed.

The wall is then pulled off either with a squeegee or with a so-called Swedish spatula. However, this requires some skill and practice to get a perfect result.

Use it yourself

Basically, anyone who has the appropriate experience and a bit of skill, and the appropriate tool has available, use spray filler itself.

wall qualities

Not only for the professional sector, but also in the do-it-yourself, you should know the standardized Wandglätte qualities and be familiar with them. In addition, spray filler is often sold in quality classes Q1 to Q4, depending on the wall quality you want to have at the end.

  • Q1 stands for a simply leveled wall, with no optical requirements, such as the quality that is necessary before tiling
  • Q2 stands for a wall quality that complies with standard filling - for example, before wallpapering or painting
  • Q3 means an even higher wall quality, in the case of plasterboard after pore closure, mostly for finely textured topcoats
  • Q4 means is the highest quality level, which is only necessary for shiny wall coverings (metal wallpaper, gloss coatings, etc.), so it must be filled four times.

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