The unique dual-action self-cleaning coating is located on the external glass pane.

It has got photo-catalytic and hydrophilic properties, and works in two stages:

Stage 1: The first stage of the cleaning process is "photocatalytic". In this stage the coating reacts with daylight to break down organic dirt.

Stage 2: The second stage is "hydrophilic". When it rains, instead of forming droplets, the water spreads evenly over the surface of the glass, forming a thin film and helping to wash away any loosened dirt, also drying quickly without leaving streaks. 

During long dry spells the glass can be cleaned by simply hosing it down with clean water.

If the thought of spending endless hours cleaning windows puts you off building a new conservatory or installing skylights then self-cleaning glass is precisely what you need.

View this demonstration video to gain a better understanding of how self-cleaning glass works with the forces of nature to keep your glass cleaner.