Mr Cooper said his company takes on community projects from time-to-time.
"As a family, with my wife and three sons this is something we can knock out in a day or two and we've been happy to help," he said.
And while Mr Hynes admitted that perhaps the Lions Club members were causing some chaos and mayhem as they performed some dubious stripping moves, he said the project had taken between 30 and 40 man-hours, with some serious paint stripping undertaken.
"The window frames were thick with peeling paint and quite a job," he said.
Gary Mitchelmore, president of the Dannevirke Theatre Society, was delighted the old matai windows were getting a facelift.
"This is an old, 1900s turn-of-the-century building and the Lions have offered to help with basic maintenance in return for use of the theatre," he said.
"A while ago Gwen Fairbrother gave us funds to purchase the building next door and we have plans to earthquake strengthen that building and the theatre with steel girders, but with the cost well over $100,000 the project could be three or four years, or even a decade away.
"In the meantime we're carrying out basic maintenance and so we struck a deal with the Lions for the work.
The theatre company will hold its annual general meeting on Sunday, March 15, where the staged rebuild of the theatre will be on the agenda.