I have a suggestion that was told to me from a truss builder (I m a carpenter by trade) and that was to use seconds from a metal roofing company. I was gonna use drywall in my
new garage built a couple years ago but ended using galvanized corrugated steel. No taping, painting or maintenance. I am very happy with the light reflection and low maintenance.
If I can figure out how to post some new pics I will do so. No matter what good luck and have fun
Dan
