He was intended to continue his father's business but after some struggle, he was allowed to move to Vienna, where he had a time full of privations.
He was appointed to an honored professorship of the Akademie der bildenden Künste (Academy of Fine Arts) in Vienna in 1928, a position that he occupied until 1944.
A Committee of Inquiry after the end of World War 2 found him not guilty of serving the Nazis through his work, however he was never reinstated to his post at the Academy of Fine Arts.
This style fitted well to the "official" taste of the Ständestaat and the National Socialist regime, so his work became somewhat disreputable after 1945.
Ten glass windows and one altarpiece of the Franziskaner hospital chapel in Ried 1928 are designs of Dachauer.