Rumprojektion

Rumprojektion is a design principle in architecture and interior design that involves intentionally offsetting or projecting elements of a room’s surfaces to alter its spatial perception, create aesthetic interest, or serve functional purposes. The term originates from the Swedish words “rum,” meaning room, and “projektion,” meaning projection, and it is closely related to architectural terms such as recess, projection, and articulation.

In practice, rumprojektion may be applied to walls, ceilings, or floor planes. Common examples include recessed ceiling panels, protruding mullions, false walls with depth, or raised dividers that create sub‑spaces within a single volume. By changing the spatial geometry, designers can influence acoustics, lighting, circulation, and the psychological experience of the space. For instance, a shallow projection on a wall can create a sense of intimacy in an open-plan area, while a taller projection can form a wayfinding landmark.

The technique gained prominence during the early and mid‑20th century with movements such as the International Style and Bauhaus, which emphasized functional form and layered volumes. Modern applications extend to sustainable design, where projections with timber or recycled materials provide natural ventilation paths, and to digital fabrication, where 3D printing enables complex, custom geometries.

Implementation requires careful consideration of load paths, material compatibility, and building regulation compliance. Engineers must calculate structural members that accommodate the altered geometry, while architects coordinate lighting and acoustical treatments to harness the new depth. Consequently, rumprojektion is a multidisciplinary practice that blends structural engineering, materials science, and artistic vision to refine the interior experience.