Your specialist for the building envelope: roof and façade timber construction, tinsmithing, solar energy and scaffolding

"Because quality is not a matter of luck."
From new builds and conversions to maintenance work and renovations, everything from a single source.

We have been providing expertise and advice on all aspects of building envelopes since 1945. With the continuation of the company Walker Dach und Wand from Märstetten by R. Dähler AG in 2013, a long tradition continues. Whether pitched roofs, flat roofs, façade construction, plumbing work, lightning protection, solar energy or roof repairs and maintenance - we put all our expertise at your disposal.