OSB is oriented strand board. Like plywood but more like random bits glued together. Between plywood and powder board.
You probably should try either a standing seam metal roof – $$$ or a seamless roof (AKA trailer style roof) Both are steel and excellent for durability and strength. However the seamless needs work every 15 or so years. The screws that are exposed need to be replaced 15 years or so. Standing seam is supposedly 50+ year.
I wanted to build a Log house – yes a 2500 sqft 1 storey with full basement out of 8X8 White pine log. I literally could not have contractors return my calls last year. Now I have them calling me at random and have saved over 75,000 on the thing just in materials. I doubt labor is falling much anyway around charlotte.
Cool.
Cow_tipping.