Abstract: The present invention relates to a method of treating a glazing panel from an inside location. Moreover, the present invention relates to a method of treating glazing panels used in windows and patio doors. Initially, an orifice is formed on both the inside and outside panes on windows and on the side and outside frames of patio doors. Then, particulate matter such as dirt, dust, and mineral deposits are purged from the enclosed volume of the glazing panel by applying a cleaning solution via the orifice. Next, a valve is attached to the outside pane/frame to cover the orifice whereby the valve is designed to reduce the amount of precipitation or matter from entering while allowing air to exit the glazing panel. Finally, a seal is used to cover the orifice on the inside pane or side frame to ensure that the building air does not enter the interior of the glazing panel. The method can also be used to treat windows for high altitude transport, or to prevent explosion in the presence of intense heat.