STAMPFLEHM EFH, Altendorf, 2024-2025
Rammed earth, clay plaster, clay panels, planning & engineering and execution
Location: Lake Zurich, Switzerland
Built: 2024-2025
Material: rammed earth walls, insulating, base and finishing plaster made of clay
Partners: Architektur Bauleituung Roskothen Architekten SIA GMBH, civil engineer SEFORB, Schalungsbau Butti AG, Lehmwerk, Burkhard Meyer-Börnecke, Curt Annen
Photos: LEHMAG, Julian Rickenbacher
CLAY PLASTER AND PANELS IN THE RAMMED EARTH HOUSE
From 2024-2025, a single-family house was built on Seeweg in Altendorf as a replacement building that incorporates traditional earth building techniques into a contemporary hybrid construction method. The architectural design was created by ROSKOTHEN ARCHITEKTEN SIA GmbH, while SEFORB is responsible for the structural design. The project is being implemented in close cooperation with LEHMAG, a specialist in earth building.
The central element of the building is the solid rammed earth walls, complemented by clay-based insulating, base and finishing plasters. The insulating plaster, a specially developed mixture in collaboration with LEHMWERK, can be applied directly to the rammed earth wall and helps with thermal insulation. With just a few centimetres of the lightweight clay and insulating material mixture, the wall is given a higher insulating value. This is followed by a base coat of coarse-grain plaster and a top coat of plaster in the striking dark blue color requested by the customer. These three layers make it possible to give the interior a contemporary, modern look without losing the advantages of the rammed earth wall itself, as each layer is made of clay and therefore blends seamlessly into the next.
With this building project, LEHMAG is bringing the historic building material clay back into the contemporary context of the 21st century - and sending a strong signal for sustainable building in Switzerland.
