Advantech OSB is available in 5/8" for floors

[skyguyscott]

I find the durable, waterproof, light weight advantages of coosa board compelling. If I ever do a shell off, that's probably what I'll go with, since I only ever want to do such a thing once. The cheaper stuff's lower price point is not an advantage if you have to redo it every decade or so. Moisture, whether from leaks or condensation, or wicking is an inevitable reality in the trailer.

[Bob Blarney]

"The cheaper stuff's lower price point is not an advantage if you have to redo it every decade or so."

Hmm, I have reason to believe that it might not be my problem after a decade or two with reasonable care for leaks. I'm already dismayed that I can buy lightbulbs that won't burn out before I do.