Im just about finished up replacing my drywall with tongue and groove. Thinking ahead to the ceiling, we are going to buy galvanized sheet metal and "age" it to look old. It is going to hang parallel to the rafters so ill need to install some sort of perlin i guess you would call it. My question is what size do those perlins need to be? 1x4? 2x4? 1x3?
What's the spacing on the rafters? 1x3 or 1x4 is fine if you're under 24" and not supporting insulation loads. 24" on center. They will go up FAST. I put white pole barn metal up inside my 30x60 shop using a sheetrock lift. Easy. I hit the bottoms of the rafters at 24" spacing and have loaded R-50 cellulose on top with no sags. Billions of screws and one trip to the eye doctor to have a little piece of metal pulled out from the screwing operation overhead.
Maybe a spray on some Flex Seal (that liquid rubberized coating) on the back side. I'll bet that would eliminate any potential for "tinny" sound in the room.
I suppose rather than undercoating, I do have stuff on the back of my metal. Behind the metal is a layer of 6 mil poly sheet and then 15" of cellulose insulation. You get no rattle or tink sound when you tap the metal. Just a dead thud.
