Loftkælingar

Loftkælingar are structural tie‑systems used primarily in timber roof construction to secure the roof frame to the wall framing. The term comes from the Scandinavian word *loft*, meaning roof, and *kæling*, a binding or link. In practice, a loftkæling is a tensioned cable, steel rod, or engineered plastic strap that runs from a ridge or collar truss over to the adjacent wall plate or sheathing. The purpose of the tie is to resist lateral forces such as wind uplift, snow loading, or seismic movement so that the roof remains properly supported.

In many Nordic building codes, including those of Norway and Sweden, loftkælingar are mandated in roof plans exceeding certain dimensions or exposed to high wind speeds. Standard spacing typically ranges from 5 to 7 metres in length, depending on the roofing material and anticipated loads. Modern construction may use high‑strength synthetic strands or galvanized steel rods, which are more corrosion resistant and easier to install than older wooden or steel canes.

These ties are especially valuable in steep‑pitch roof designs common in alpine regions, where snow loads can create significant shear forces. By tying the ridge to the walls, loftkælingar prevent the roof deck from peeling off the walls or the ridge from lifting. The systems are also employed in modular housing projects where quick assembly and disassembly are required while maintaining structural integrity.