What is a Putty Knife?
Definition of Putty Knife in Construction A putty knife is a special tool that is used to install the glazing compound into the area around the pane of glass and the window frame. This tool is shaped like a wide screw driver and a narrow paint scraper. It has a handle that makes it easy to apply the glazing compound by applying pressure on a relatively stiff metal blade. The glazing compound is forced into the area on the surface of the glass that is resting on the glass frame of the window. Skilled glaziers are artists with the proper putty knife and can make a glazed window pane look perfect and professional.