Architrave:
As we mentioned before, architrave is a form of interior moulding — those little timber (or plaster) strips or sections that cover up the otherwise messy joins between surfaces.
In the case of architrave, this is the strip of material (usually timber) that covers the join between door frames and the walls. Not only does it hide the join, it will also conceal future movement or shrinkage that may occur between the wall and the casing within the door surround.
Architrave is used for internal doors, external doors and also around windows and built-in cupboards — and can even be used to smarten up loft hatches.
Other examples of interior mouldings include skirting boards that conceal the junction between wall and floor, and cornice, the plaster mouldings that deal with the point at which the ceiling and wall meet. [Homebuilding & Renovating]
Noted in this video by Our Restoration Nation’s Laine Berry:
