The coating works continuously, with dirt being washed away whenever it rains. After it has been fitted, the coating on the glass takes about five days to activate itself. For the best results, after installation and initial cleaning, the windows should be left until the coating activation period is completed.

Will This Process Work Even When The Glass is Very Dirty?

The coating will eventually break down even heavy deposits. However, if the surface is so dirty that UV light cannot reach the glass, the self-cleaning action will not take effect. In such cases, clean the glass with warm soapy water and a soft cloth, and in a few days the process will have re-activated.

What Happens If It Does Not Rain For Some Time?

In dry spells or if rain cannot reach the window, normally a light hosing with water is all that is required. The coating needs only a small amount of UV radiation to activate the coating " so it works on overcast days and even lasts throughout the night.

Does the coating need replacing?

Because the coating is permanently bonded to the glass it lasts as long as the glass itself. The coating can only be affected if the surface of the glass is scratched by abrasive cleaning or sharp objects.

What Effect Does The Coating Have On The Glass?

Very little, other than keeping it cleaner for longer! It has no effect on its strength, and only reduces the amount of light and energy that passes through by about 7%. From certain angles Pilkington Activ is slightly more reflective than ordinary glass, with a faint blue tone.