Glazing bars providing support and structure for windows and doors. They can be either solid or applied, depending on the specific design or planning regulation requirements. 

Solid glazing bars are typically made from a single piece of wood with glazing beads.

Applied glazing bars are attached to the window or door on both sides of the glass. They are typically fitted to double glazed units.

Additionally, glazing bars can be beaded or putty, adding a decorative element to the overall design. Beaded glazing bars feature a bevelled edge for a more traditional look, while putty glazing bars have a more streamlined appearance, these are only for traditional single glazed windows. 

No matter the style, glazing bars play a crucial role in enhancing the aesthetic appeal and functionality of joinery projects.