doorboord

Doorboord is a term used in some Dutch-language carpentry and architectural contexts to describe a wooden board or strip installed around the perimeter of a door opening. The exact meaning varies by region and period; in practice it may refer to a decorative casing, a protective edging, or a structural reinforcement of the door frame.

Common functions of a doorboord include protecting adjacent masonry or plaster from impact as doors swing, providing a clean edge for finishing, and contributing to the stiffness of the jamb in load-bearing walls. In decorative applications, it can also serve as a visual frame that enhances the appearance of the doorway.

Construction and installation practices vary. A doorboord is typically made from hardwood or softwood cut to match the opening and finished to suit the interior or exterior style. It is fastened to the wall or jamb with nails or screws, and corners are often mitred to create a neat seam. In modern renovation contexts, the term is used less consistently and may be interchangeable with door casing or trim in some regions.

Usage and terminology vary by locality and era. The doorboord appears most often in historical Dutch carpentry manuals and regional practice; in contemporary standard Dutch, the term is less common and similar components may be described as door casing, trim, or jamb plating.

See also: door frame, casing, trim, threshold, jamb. Notes: because the term is not universally standardized, consult local drawings or glossaries to determine the intended component in a given project.