Definition & Meaning of "glazing knife"

What is a "glazing knife"?

A glazing knife is a hand tool used for applying and smoothing glazing putty or sealant around windows and glass. It has a flat, flexible blade that helps to spread and shape the material evenly along the edges of glass panes, ensuring a smooth and secure seal. Glazing knives are commonly used in window repair and installation, as well as for creating a clean, professional finish when sealing glass in frames. They come in various sizes, with the blade often tapered to allow for precision and control when working in tight spaces.