METS 15-17 November 2016 Amsterdam

It is not recommended to apply 2K paints over 1K paints. 1K and 2K inks differ in their composition and properties, including hardness, chemical resistance and durability. 1K paints are one-component and dry by evaporating the solvent, while 2K paints are two-component and need to be cured by adding a hardener. Applying 2K paint over 1K paint can cause unpredictable chemical reactions and lead to undesirable effects such as dulling, chipping or flaking of the paint. Therefore, always use paints according to the manufacturer’s instructions and do not mix different types of paints. farby zgodnie z instrukcjami producenta i nie mieszać różnych rodzajów farb.

We recommend to always sand the surface between applying two different products to ensure uniform surface roughness and adhesion of subsequent layers. The sanded surface should also be cleaned and degreased.

Possible causes

• Wrong surface preparation,
• Skipping the primer in the system application process,
• Use of universal thinners or replacements ,
• Paint incompatibility.

How to prevent

• Correct surface preparation (grinding, clearing, degreasing),
• Use primers which improve adhesion of paints,
• Use thinners which are dedicated to each paints,
• Use of paints which are compatible to each other.

How to remove

• Grind, clean and paint again.