Hirsch Gebäudehülle GmbH has been your trusted specialist since 2007 for pitched and flat roofs, sheet metal works, liquid waterproofing, window sills, roof maintenance and photovoltaic systems . We deliver durable, high-quality solutions for new builds, renovations and ongoing maintenance – all from one source. Our projects are completed with precision, transparent planning and on-time execution across Thurgau, St. Gallen, Zurich and throughout Switzerland. Sustainable materials and smart energy solutions ensure long-lasting protection and efficiency.

Kather Sanitär Heizung GmbH (Amriswil) delivers plumbing, heating and ventilation services across Switzerland. Since 2003, we support private, commercial and industrial projects—from single-family homes to large-scale builds. We handle planning, installation, upgrades, maintenance and fast troubleshooting. Our services include sanitary installations, bathroom renovations, modern heating systems (heat pumps, oil, gas, wood), underfloor heating, radiators, and ventilation solutions for residential and commercial properties, including heat recovery systems. Expect high-quality materials, efficient processes and personal service.