More than just extremely resistant


Like water off a duck's back. Specially developed for drainage systems, this product has excellent forming properties and is extremely resistant to scratching and corrosion (RC 4). 
  • Very good forming properties
  • Additional resistance to scratching (35 N)
  • Additional corrosion protection (RC4)
  • Highest UV resistance class (RUV 4)

  • Guaranteed up to 2100 meters above sea level

colofer® ROBUST RAIN layer model

Highest performance in corrosion resistance thanks to higher layer thickness


Comparison colofer® ROBUST and colofer® ROBUST RAIN

This product features increased corrosion protection and can also be used for drainage applications in environments that contain high levels of salt or are heavily polluted by industrial emissions (RC 4). Furthermore, thanks to the higher layer thickness, the protection against mechanical damage is increased to 35 N.


Key figures
colofer® ROBUST RAIN
Total layer thicknessapprox. 35 μm
Adhesion after bending≤ 1 T
Crack formation during bending≤ 2 T
Scratch resistance≥ 35 N
UV resistanceRUV 4
Corrosion resistanceRC 4
Certifications and regulations
colofer® ROBUST RAIN

* No certification, EPD serves as the basis for achieving the requirements

Guarantees and warranties for drainage applications
colofer® ROBUST RAIN
RC 2RC 3RC 4RC 5
Corrosion (rust)181210X
Coating adhesion1085X
Visual appearanceRUV 4RUV 4RUV 4X

Standard colors


The unique design of the production line makes it possible to achieve a very high degree of reliability in the reproduction of color shades.

Standardfarben colofer® ROBUST RAIN

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