have a small garage added to a Florida room that is about 11ft wide, someone built it using 2x4 for the ceiling rafters, they had a cork board material screwed to it but it got wet so I had to rip it out. I need to find something in a 4x8 sheet if possible that can be attached to the 2x4x11, any ideas what I could use that would not be too heavy? I would be able to run the sheets across the 2x4s instead of length wise, hows a good way to cover it. Thanks
