A putty-faced window refers to a traditional method of glazing where the glass pane is secured into the window frame using glazing putty. This putty is a pliable, clay-like material that is used to create a seal between the glass and the frame. The term “putty-faced” comes from the visible putty that is smoothed into a neat, angled line around the perimeter of the pane.

Here’s how a putty-faced window is typically installed:

1. Setting the Glass: The glass pane is placed into the window frame or rabbet (a groove cut to hold the pane).
2. Applying Putty: Glazing putty is then applied around the edges of the pane. It is traditionally shaped in a sloping line that covers the edge of the glass and overlaps slightly onto the frame. This creates a seal that keeps out water and holds the glass in place.
3. Securing with Points: Small metal fasteners, known as glazing points or window points, are often pressed into the frame around the glass to provide additional stability. These are usually hidden beneath the layer of putty.
4. Finishing: Once the putty is applied and smoothed, it is left to dry and harden. Over time, it may need to be checked and maintained, as it can crack or degrade due to weather exposure.

Putty-faced windows are common in older or traditional-style buildings and are less frequently used in modern constructions, where other methods like rubber gaskets or adhesive tapes might be preferred for securing window panes.