Within the FAQs, important questions and answers are formulated to cover many powder coating topics. Likewise, we have answered the most frequently asked questions about our service. If you still have questions, please contact us via our contact form (under Contact).

Questions about powder coating

Translated data sheets in english, coming soon..

The powder coatings must not exceed temperatures of over 120 °C in the long term after baking, as the hardened powders can soften again and the completed coating layer can thus be damaged. An exception is the build-up of a desired multi-layer system, the powder coating layers are cross-linked with each other from the 2nd stoving process, for example with a grunid + RAL color.

Powder coatings can have different qualities. Generally, a distinction is made between interior and exterior powder coatings, depending on the composition, i.e. the type of powder. Pure epoxy powders are used for interior applications and polyester powders are designed for exterior applications.

In industrial powder coating, differences are made in the polyester powder coatings with regard to the durability of the surfaces in terms of weather resistance, mainly for optical reasons (color changes). This results in the following quality grades:

  •     Industrial quality
  •     Facade quality
  •     High weather resistant (Super Durable)

Our RAL paints are all made in facade quality, in addition we have a small selection of powder paints in super durable. A rough estimate of how long a surface can be exposed to UV radiation is tested by laboratory tests (Florida test). In the case of industrial grades, this is +/- 10 years, in the case of powder coatings in facade quality +/- 20 years and the highest quality level is shown by the high weather resistant powder coatings, with more + 25 years.

However, the time specifications are not a guarantee for the actual durability, since factors such as the correct pre-treatment or processing, also play a significant role in the longevity of the surface. This distinction is made in our store only for polyester paints. We also offer other types of powder coatings, but they have different properties.

The powder coating containers should ideally be stored in a dry, cool room with low humidity. Storage locations that are too warm (for example, next to the oven) or too humid can greatly reduce the quality of the powder.

Most powder coatings can be processed with the corona and tribo application methods. In the case of metallic coatings, it must be checked whether they can be processed with the Tribo process. We have already described the two application processes in more detail in our blog articles.

Note for multi-layer systems: With inexpensive coating equipment on which no settings (amperage/voltage) can be changed, it must be checked whether a multi-layer system is possible.

Before coating, any residues of grease, oil, scale and oxidation products must be completely removed from the surface to be coated. Depending on the workpiece as well as the project requirements, it may be useful to blast and/or prime the workpiece. For further information, please refer to the technical data sheets.


Recommendations for processing and information on properties of metallic effect powder coatings are given here. Precise information at a glance, such as curing temperatures and other notes, can be found in the technical data sheets. Metallic effects are created by the light reflection, light absorption and mirror effect of the metallic effect pigments contained in the paint. Different color tone and/or effect impressions are achieved by type, quantity and orientation.

In addition to the processing parameters usual for all powder coatings, which are outside the influence of the powder coating suppliers, the following points must be particularly observed with metallic effect powder coatings the following points must be particularly observed, whereby "non-bonded" (dryblend) coatings are often more sensitive than "bonded" metallic effect powder coatings. You will find many bonded metallic color shades in our range.


As a general rule, coating with metallic powder coatings is more demanding than coating with solid colors, such as RAL powder coatings. Therefore, the optimum settings of the coating system should be determined and noted down in prior tests so that they can be adjusted later during coating. It is recommended to always use the same spray guns.

Powder coatings are produced industrially, therefore they are subject to certain raw material and production fluctuations. Despite the most careful working methods, differences in color shade or effect cannot be avoided in the production of different batches. Therefore, we recommend that a prior incoming inspection takes place under standardized conditions. However, an assessment according to guidelines for RAL powder coatings is not applicable for metallic effect powder coatings. Therefore, object-related workpieces should be coated with the same batch.


To avoid unacceptable color tone/effect differences, we recommend that these areas are defined at the beginning and then continuously checked during the coating process. If necessary, problem areas of the workpiece should be "pre-coated". Post-coating in these areas may result in color tone/effect variations, which could be detrimental to the overall impression. Further information can also be found in the technical data sheets.


Continuous fresh powder to dosage. A ratio that is as constant as possible ratio of fresh powder to recirculated powder is to be aimed for with all metallic should be aimed for.


The glazes are transparent colored powder coatings, therefore the substrate is decisive for the color appearance. Light backgrounds make the color tone more radiant and brighter, for the "candy effect" we recommend our chrome effect powder. The color tone of a glaze is always very much dependent on the layer thickness, higher layers usually provide richer, more intense colors. Layer thickness differences of 20 μm already provide an optical color difference and therefore do not represent a defect.


If the glazes are used in a multi-layer system, for example with our Candy Set, processing requires several passes. First, the primer is baked or annealed, followed by the base layer of the glaze, often the Chrome Effect Powder is used for this purpose. After this layer has been baked in, the glaze is applied. Due to the multi-layer structure, the layer thickness increases, which makes it more difficult to create an adhesion between the powder coatings if the settings on the coating equipment are missing. With inexpensive equipment, it is possible that no settings can be changed, the processing can then not be done in this way.

However, "hot coating" can be used to enable processing with simple equipment. Here, the workpieces are not cooled down after the baking process, but are directly "hot" further coated. The powder coating adheres to the hot surface and can be baked again after all areas have been evenly coated. It is recommended that for complex geometries, the most difficult points should be coated first.

Cleaning and resistance to chemicals

The cleanability and chemical resistance depends on several factors:

  •     Composition of the powder coating
  •     Type and concentration of cleaning agents or chemicals
  •     Type and exposure condition of the contamination

When cleaning, the manufacturer's data sheet (powder coating and cleaning agent) and the valid regulations of the various associations (e.g. GRM, GSB, Qualicoat) must be observed. Abrasive cleaning agents are not recommended. Soiling should be removed as quickly as possible to avoid permanent damage to the surface. In case of high requirements, the cleanability, chemical resistance and protection against mechanical stress can be improved by a suitable transparent overcoat.

When disposing of residual powder, observe local regulations and the safety data sheet.

A few basics should be followed when powder coating to achieve the best possible results. We recommend the following tips:


The settings as far as possible or available, such as high voltage, conveying, dosing or rinsing air, as well as the distance to the workpieces, the spray gun and the substrate must not be changed during the coating process. This is especially important for parts that are to be combined later! We recommend that you always ensure that the parts are properly grounded. For difficult geometries, always "pre-coat". Cloud formation, fade and backspray effects (overcoating) may occur during postcoating. For parts to be coated on both sides, coat the main viewing surface last.

Powder coatings

The film thickness for a "single coating" of metallic and RAL powder coatings should not be too high and not too low, around 80-100 μm and max. 120 μm (can vary according to powder type). Often, too high coating thicknesses/thicknesses result in optical impairments. Powder coatings with the surface structure smooth obtain an "orange peel", a structure/bump-like surface. If possible, only powder coating from one production batch should be used for a coating application. For this purpose, it is necessary to estimate the required quantity correctly, the theoretical coverage for each powder coating can be found in the article description or on the technical data sheets. In the case of overpainting (for example with transparent coatings, repair coatings), it must be noted that this leads to a change in the overall impression.

Packaging and transport

Suitable, non-abrasive packaging material must be selected for the storage and transport of coated workpieces. Direct contact between coated parts must be avoided.

To determine the correct powder quantity for your project, you should pay attention to the indication of the theoretical yield in the article description. The powder yield is also strongly dependent on the powder output quantity of the coating equipment. If necessary, settings on the equipment or the air supply should also be changed, if possible.

Questions about our service

The payment methods prepayment, PayPal, credit card, Klarna (Sofortüberweisung or purchase on account for private customers) and Billie (purchase on account for business customers) as well as payment on delivery are available to you. For commercial customers and public institutions, purchase on account is also possible without an additional payment service provider, usually after prior verification. You can find more information here.

Please see shipping and packaging information.

Within 14 days return period you can send your orders back to us. Please note that any return shipping costs incurred will not be reimbursed by us and we can only accept unopened original packaging. If you are still dissatisfied with the product or have made a mistake with your order, please do not hesitate to contact us.

Benefit from our regular customer discount

To reward your regular cooperation with us, we are introducing a new discount system based on different customer groups. In order to benefit from the advantages of each group, you have to reach certain "milestones". As soon as these milestones are reached, we will activate you for the respective customer group. The following customer groups and the associated benefits are possible:

End customer

This customer group contains all newly registered customers.

Regular customer

After your third completed order we will upgrade you in your customer account from "end customer" to "regular customer", thereby you get the following advantages:

  • The purchase on account is activated, you can buy your orders via the payment method invoice and pay for the goods upon receipt within 14 days. You will get 5% discount on the whole assortment (excluded category offers and product sets)


More information will follow.

Premium partner

More information will follow.

The offer is directed exclusively to trader and private customers. To use the advantages a registered customer account in our store is needed.