The secretary of Victoria's powerful construction union has rubbished claims he got a sweet deal on a home renovation in exchange for keeping peace on building sites.

Builder Andrew Zaf told the ABC’s 7.30 program that during the mid-1990s he paid $10,000 for union organiser John Setka to receive a free Colorbond roof and other goods for his house renovation in return for “peace and quiet” on his sites. “At the end of the day it was…