For over 70 years, we have dedicated ourselves to cleanliness, offering top-notch services in pipe cleaning and crane operations. Our family business has been around since 1951. In three generations, we have accumulated a wealth of valuable experience. The expertise we have gained makes us the regional market leader in our industry and motivates us to tackle our diverse tasks with joy and pride. Whether it’s private buildings, public roads, your home, or your community, we have the right, highly trained professionals to keep pipes and lines clean or to thoroughly inspect them with pipe cameras. Additionally, we offer comprehensive crane operations. When heavy loads need to be lifted or precise positioning is required, you can rely on our expertise with cranes and lifting platforms. Our trained and experienced crane operators ensure that your loads can be safely and accurately transported and lifted. As a family business, we rely on values such as trust, professionalism, and sustainability. This is reflected in our dealings with our employees and customers, and it is also evident in our use of the latest equipment to protect the environment as much as possible. Our services: • Pipe cleaning • Sewer cleaning • Sewer maintenance • Drain unclogging • Sewer inspection • Leak testing • Street and surface cleaning • Special transports and operational relocations • Crane operations • Lifting platforms • Rental

Exhibition by appointment: Burgisteinstrasse 1, Wattenwil Thierstein Treppen AG is a family business that has been based in Wattenwil near Thun for 26 years. We specialise in the manufacture of staircases made of wood, steel, glass and stone for indoor and outdoor use. Our proximity to timber construction enables us to offer unusual solutions and fulfil your wishes with a wide range of experience. Our working area covers the canton of Bern and neighbouring areas. We attach great importance to providing our customers with honest and competent advice.

Zumbrunn Bau AG Grindelwald – Your Reliable Partner for Building Construction and Civil Engineering in the Bernese Oberland Zumbrunn Bau AG in Grindelwald has stood for quality, reliability, and professional expertise in the construction industry for many years. As an experienced construction company, we offer a comprehensive range of services for private clients, companies, planners, and public authorities. Our activities cover all work in both building construction and civil engineering – from planning to professional execution. Building Construction – New Builds Tailored to Your Needs Our main area of activity is building construction. We realize new buildings of all kinds – whether for private clients, investors, or public authorities. As a reliable and market-oriented construction partner, we build: • Residential buildings and apartment blocks • Single-family houses • Buildings for the tourism sector such as hotels, chalets, or holiday apartments • Commercial and office buildings Thanks to our modern machinery, our well-equipped yard in Grindelwald, and our motivated, highly trained staff, we are able to successfully implement even demanding construction projects efficiently and on schedule. We place great importance on clean, precise, and professional workmanship – from the first construction phase to turnkey handover. Civil Engineering – Solid Foundations for Every Project In addition to building construction, Zumbrunn Bau AG is also your competent partner for civil engineering works in Grindelwald and the surrounding area. Our civil engineering services include, among others: • Road and path construction: construction and maintenance of traffic routes • Earthworks: soil removal, earthmoving, backfilling, embankments, foundation excavation, construction pits, and trench excavation • Securing terrain drops: retaining walls, shoring walls, and anchoring systems • Slope works: cuttings, embankments, dams, and protection against landslides • Hydraulic engineering: structures for water supply, drainage, and sewer systems Especially in the alpine region around Grindelwald, precise planning, experience, and technical expertise are essential. We are familiar with the local conditions and ensure that all work is carried out safely, sustainably, and in compliance with standards. Your Construction Company in Grindelwald – Reliable and Regionally Rooted Zumbrunn Bau AG stands for personal service, high-quality execution, and on-time completion. Whether new construction, conversion, or civil engineering project – we support you competently through all phases of construction. Our goal is to create durable, functional, and cost-effective buildings that meet the high expectations of our clients. If you are looking for an experienced construction company in Grindelwald for building construction or civil engineering, Zumbrunn Bau AG is your strong partner in the Bernese Oberland. Contact us – we look forward to your project.