All Trade Catcher listings include&colon; Plumbers, Dentists, Builders, Roofers, Beauticians, Estate Agents and other tradesmen. In Oklahoma roofers are required to meet insurance and roofing license guidelines. Roofers replaced Davison's roof in 1960 and new windows were installed in 1980. The roofers were fitting metal coping, which is sealed with a blowtorch. Roofers are also required to show their license number on their marketing material. The two roofers occasionally whistle bits of what they hear the clarinetist play. His father and brothers are roofers.