Gielen is a sculptor and a painter. Ever since his study days he has been fascinated by man. The performances in his work have a high degree of abstraction in which man is central. Its premise is that one man can’t exist without the other. “Together strong”, “collaboration” are strong themes in his work.
In his paintings he uses colours to express the connotation of situations between people. He produces fabrics/sculptures in which groups of stylized people are brought together in an almost architectural context.
Gielen makes paintings, sculptures and business gifts on behalf of individuals and companies.