Self-cleaning glass is an ordinary float glass with a special   photocatalytic coating. It is made by chemically bonding and integrating   a microscopically-thin surface layer to the exterior surface of clear   glass. The integrated coating reacts to the sun’s ultraviolet rays to  gradually and continuously break down organic dirt through what is called a photocatalytic effect. In other words photocatalytic means that the active integrated coating on the outside of the glass absorbs the sun’s ultraviolet rays. This causes a reaction on the surface which breaks down dirt and loosens it from the glass. This type of glass also has hydrophilic properties, meaning that rain flows down the pane as a sheet, washing away the dirt instead of, as with normal glasses, leaving the dirt behind. As a result of these two effects, the special  self-cleaning coating keeps the glass cleaner for a longer period than  with normal glass in applications where it is exposed to the rain.

How it works:

--A titanium oxide coating that is integral to the glass is applied
during the manufacturing process.

--Ultraviolet light reacts chemically with the coating to loosen and
dissolve dirt.

--The coating causes water to spread, or sheet, slipping off the glass
without leaving spots when rinsed by rain or a light spray of clean water.

--The inside glass is not coated and still requires normal cleaning.

The  Skinny on  Self   Cleaning Glass

Ph 519-842-8558 ,  Fax  519-688-3793 ,   mail@vanrybroeck.ca