Lattung

Lattung is a system of thin wooden battens, called latten, that are fixed to a structural substrate to create a base surface for finishing layers such as plaster, tiles, or cladding. The battens form a shallow, evenly spaced grid that provides a mechanical key for the finish and can allow air circulation to reduce moisture buildup.

In roofing, the term commonly refers to Dachlatten, roof battens that carry roof coverings like tiles or slates. There may also be a Konterlattung (counter-batten) to create an air space and facilitate ventilation between the battens and the roof covering or underlayment. In walls and ceilings, Innenlattung or Außenlattung provides support for plaster, wood panels, or siding.

Materials and installation: Lattung is usually wooden, typically softwoods such as pine or spruce, with dimensions and spacing varying by climate, load, and finish. They are fixed with nails or screws to a structural frame, sheathing, or another substructure. In modern construction, metal lath or plasterboard with metal channels may be used as alternatives to traditional wooden battens for certain applications.

Function: The primary role of Lattung is to provide a stable base for the finish layer, offer a constructive key for plaster, and potentially enable ventilation and drainage behind porous finishes. It also helps distribute loads and allows for minor surface irregularities to be accommodated.

History and usage: Lathing is a traditional technique in many European regions, dating to medieval and early modern construction. Today it remains in use for historic restorations, timber-framed buildings, and some roofing systems. In new construction, dry lining and prefabricated panels have largely supplanted many classic uses, though Lattung remains relevant in certain installations.