SunClean Self-Cleaning Glass uses a PPG patented application process to create a coated glass product that has both photocatalytic and hydrophilic properties that, together, make windows easier to clean. Additionally, SunClean glass by PPG offers improved thermal/optical qualities compared to regular clear glass, a 40 percent reduction in UV transmittance, and an improved solar heat gain coefficient.
How it Works: Self-Cleaning Window Glass Technology
The self-cleaning property of SunClean glass is made possible by a PPG patented application process. A durable, long-lasting, transparent coating of titanium dioxide (TiO2) is applied during the manufacturing process to hot glass during the forming process to form a strong, long-lasting bond, which makes the coating an integral part of the outer glass surface. The coating has photocatalytic and hydrophilic properties that combine to make windows easier to maintain.
In a photocatalytic process, ultraviolet (UV) light from the sun energizes the SunClean self-cleaning glass coating to help slowly break down and loosen organic dirt. Since UV light is abundant. even on cloudy days or in shaded areas, this process works nonstop throughout the day.
The hydrophilic quality makes water droplets spread out, or sheet, evenly across the surface of the glass, instead of beading. When rain or a light spray of water hits the window, the water carries away the loosened dirt. This sheeting action helps efficiently flush the surface clean and accelerate drying to minimize spotting and streaking.
SunClean Self-Cleaning Glass is available to manufacturers of wood, vinyl and aluminum windows. SunClean glass can be used in conjunction with PPG energy-saving products, such as Solarban® 70XL Solar Control Low-e glass, Solarban® 60 Solar Control Low-e glass, or Sungate® 100 or 500 Low-e Glasses, to give you high performance and easier maintenance.
If cared for appropriately, SunClean self-cleaning glass in windows will provide many years of satisfied service. (This information refers to SunClean glass care and maintenance; please refer to your manufacturer’s care and maintenance recommendations for your window system.)
If you have additional questions after reviewing the following information, please contact your window installer or window manufacturer.
Initial Construction and Installation
The SunClean glass metal oxide coating is bonded to the surface of the glass during the manufacturing process and is extremely durable. However, during and after construction, the glass should be protected from spills, runoff, and over-spray from common building materials. Caulking, lubricants, and paints should be promptly removed.
After this initial cleaning and with adequate exposure to ultraviolet light, SunClean glass is ready to do its job. Depending on the exposure, it may take a few days for SunClean glass to energize.
Ongoing Care and Maintenance
SunClean self-cleaning glass is engineered to use rainwater and sunlight to remove organic dirt and debris. In times of low rainfall, or on windows not exposed to sufficient rain, it may be necessary to do supplemental rinsing. If your glass has a stubborn deposit that does not rinse away, hand cleaning may be required. If hand cleaning is required:
As with any glass:
DO NOT use scrapers or razor blades to remove stubborn deposits or labels.
DO NOT use abrasive cleaning solutions or materials such as Ajax or Comet.
DO NOT allow splashed materials, such as paint, stucco, or mortar to dry on the glass surface.
Acceptable Cleaning Agents
The following household and professional cleaning agents have been found to be compatible with the SunClean glass coating. They should be used as recommended by the manufacturer, including any requirements relating to dilution of the cleaning agent. You should also first check with your window supplier to verify that these cleaning agents are compatible with your window sash and framing materials and finishes.