HT – light-active to combat soiled facades.Print pageSend page


The weather is always on your side
Sunlight permits particularly intensive photocatalysis. The antibacterial effect breaks down algae, fungi and moss. When it rains, the following happens: water does not form droplets or balls (“lotus effect”) which ineffectively pearl off or dry leaving unattractive marks but rather a wafer-thin film is formed. This self-washing effect rinses off dirt and soiling.

Active against dirt
This water film ensures that even the tiniest particles of dirt and stubborn residue which is difficult to remove under normal conditions are thoroughly infiltrated, detaching them from the surface. The result is a clean surface.

Effectively inexpensive
The distinctive self-washing effect means that HT effectively reduces the costs of cleaning across the entire service life of coated facades. This surface makes HT-coated facades an ideal coating for any building exterior.

The film demonstrates the self-washing effect:

HT film download


A clean-cut af fair.



Orchard Hotel, Nottingham, Great Britain
Architect: RHWL Architects, London
Products: KeraTwin® (K20), special colours, clamp fastening


Renowned test institutes confirm these effects.