NCIDQ Interior Design Professional Exam (IDPX) Practice Exam 2026 - Free Interior Design Practice Questions and Study Guide

The distinction between standing trim and running trim primarily relates to their form and application. Standing trim is characterized as having a defined, fixed length, making it a type of trim that is often used in specific locations, such as around windows, doors, or as baseboards. It is typically cut to size and installed in specific dimensions dictated by the design requirements.

On the other hand, running trim is designed to be continuous, allowing it to span longer distances without the need for multiple pieces. This can include elements like crown molding or chair rails that often run along entire walls or areas, creating a seamless, flowing appearance.

Understanding this difference is crucial for interior designers as it impacts how the trim interacts with spaces, the aesthetics of the design, and the methods used in installation. Designers should consider which type of trim to use based on the specific architectural requirements and visual concepts of their projects.