tinwork
noun
tin·work ˈtin-ˌwərk 
: work in tin
Example Sentences
Recent Examples on the Web Gibson kept the original tile floor and tinwork ceiling in the sunroom. 
Emma Bazilian, House Beautiful, 25 Sep. 2020 There’s a mural with Louis Armstrong, tinwork on the ceiling, a black-and-white-checkerboard tile floor, and a booth fashioned from parts of a ’57 Chevy. Jonathan Hunley, Washington Post, 5 June 2017
Emma Bazilian, House Beautiful, 25 Sep. 2020 There’s a mural with Louis Armstrong, tinwork on the ceiling, a black-and-white-checkerboard tile floor, and a booth fashioned from parts of a ’57 Chevy. Jonathan Hunley, Washington Post, 5 June 2017 Word History
First Known Use
circa 1934, in the meaning defined above