Ralf Zumstein Architecture

A new roof nest of timber and clay

The timber-frame building, insulated with wood fibre, was fitted on the inside with fir boards, clay building boards and a clay finishing plaster. In the bathroom area, a lime plaster forms the visible finish of the walls and ceilings. Elements painted with oil paint and timber battens, as well as soap-finished ash cladding, are further components of the interior spatial design.

Farmhouse Gaiserau, Gais, cultural monument of the canton of Appenzell Ausserrhoden Conversion and renovation

Living in the original farmhouse

After the careful storage of the historical objects, the building was cleaned and a few elements were removed before the intervention with new architectural elements began. The centrepiece of the conversion work is the new heating of the listed cultural object, a water-bearing tiled stove with a 5,000-litre storage tank, from which hot water flows to the new white tubular radiators and the heat is distributed throughout the house. The central “Tigerli” tiled stove was dismantled down to the floor and then rebuilt, with a large firebox for logs one metre long.

Residential house Möslenstrasse, St. Gallen - phased conversion and renovation

Fire at the heart of the town house - St. Gallen

The residential house, built in 1920 as part of the Möslenguet ensemble in St. Gallen, has been in the hands of a family with three children since 2018, who wished for a sustainable and gradual development of the house. The town house, located at the foot of the Drei Weihern in the St. Georgen residential quarter, was converted and renovated in stages, an exceptional