Walter Thielen

Certified Passive House Consultant

Bauleiter

Steffen Holzbau SA

13, rue de Flaxweiler
6776 Grevenmacher
Germany

Phone: +352 (0)719 686-0
w.thielen@steffen-holzbau.lu

Initial by Exam

Certificate valid from May 12, 2016
Certificate valid until May 12, 2021
The certificate only applies to this person.

Examined by Zentrum für Aus- und Weiterbildung des Mittelstandes V.o.G. St. Vith at Sankt Vith, Belgium