tvåvägg

Tvåvägg is a Swedish term that can refer to more than one architectural or housing concept, and its precise meaning is not fixed across contexts. In building practice, the term is often used to describe a double-wall system consisting of two parallel walls with a gap in between that can be insulated or left as a service cavity. This arrangement aims to improve thermal performance, airtightness, and sound insulation by reducing thermal bridges and allowing space for conduits, while separating interior space from exterior conditions.

In residential design, twovägg can also describe a layout where living spaces are oriented between two exterior walls, providing exposure to daylight from two sides. Such a two-wall or two-sided façade arrangement can enhance natural light and cross-ventilation, but may require careful detailing to avoid heat loss or overheating depending on climate and orientation.

Variations in meaning arise from regional practice and specific project needs. The term is not universally standardized, and in some contexts related concepts are described with more precise terminology, such as double-wall construction or double-skin facades. In energy-efficient building discussions, twovägg-related ideas often intersect with principles of envelope design, vapor control, moisture management, and efficient service routing.

Etymology: två means two and vägg means wall in Swedish. See also double-wall construction, double-skin facade, and cross-ventilation.