OK, understood If you continue to use the website, we will assume your consent. Continue reading Home Companies Services partner team Contact imprint data protection HOME Welcome to Topdach Zandonella! We are one of the leading roofing and plumber companies in Upper Austria and employ around 40 people at our location in Vorchdorf. Topdach Zandonella is now in the fourth generation of the family . The master craftsman specializes in all plumbing and roofing work, flat roof sealing, facade cladding and trapezoidal sheet metal sheeting and trades in roofing articles and accessories. Helmut Zandonella Ges.mbH | Lederauer Strasse 62 | 4655 Vorchdorf | Tel: 07586/7384 | Email: office@topdach-zandonella.at | VAT ID No. ATU 22135204